NWSLI River Name Proximity Station Name State Name Latitude Longitude AAKA2 Antler River near Antler River AK 58.8519 -134.7086 ABLA2 Kobuk River at Ambler AK 67.0869 -157.8475 ACSA2 Susitna River at Alexander Creek AK 61.4167 -150.5931 ALKA2 Alsek River at Walker Glacier AK 59.3950 -138.0819 ALLA2 Koyukuk River at Allakaket AK 66.5653 -152.6667 APBA2 Anchor River at Anchor Point AK 59.7667 -151.8333 APTA2 Anchor River at New Sterling Hwy AK 59.7472 -151.7531 ARAA2 Anvik River near Anvik AK 62.6594 -160.3039 ATRA2 Atigun River near Pump Station 4 AK 68.2150 -149.4036 BCTA2 Birch Creek above 12 Mile Creek AK 65.3975 -145.7006 BETA2 Kuskokwim River at Bethel AK 60.8000 -161.7500 BGDA2 Tanana River at Big Delta AK 64.1564 -145.8333 BTTA2 Koyukuk River at Bettles AK 66.9167 -151.5000 BVRA2 Yukon River at Beaver AK 66.3667 -147.4167 CCTA2 Copper River near Chitina AK 61.5258 -144.4119 CCVA2 Colville River at Colville Village AK 70.4322 -150.4094 CHAA2 Chatanika River at Elliot Hwy Bridge AK 65.0853 -147.7217 CHFA2 Chena River at Fairbanks AK 64.8458 -147.7011 CHLA2 Little Chena River at Chena Hot Springs Road AK 64.8867 -147.2494 CHRA2 Chester Creek at Arctic Blvd AK 61.2053 -149.8333 CIRA2 Yukon River at Circle AK 65.8333 -144.0667 CJXA2 Kuskokwim River at Crooked Creek AK 61.8694 -158.1114 CKTA2 Chilkat River near Klukwan AK 59.3981 -135.8928 CLKA2 Chelatna Lake near Lake Outlet AK 62.4333 -150.7333 COCA2 Cooper Creek at mouth near Cooper Landing AK 60.4839 -149.8803 COOA2 Kenai River at Cooper Landing AK 60.4833 -149.9667 CRHA2 Chena River near Hunts Creek AK 64.8600 -146.8033 CRNA2 Chisana River at Northway Road Bridge AK 63.0064 -141.8047 CRSA2 Chatanika River at Steese Hwy Bridge AK 65.1906 -147.2542 CRUA2 Colville River at Umiat AK 69.3764 -152.0944 CSRA2 Campbell Creek at Canyon Mouth AK 61.1500 -149.7167 CTEA2 Crooked Creek at Central AK 65.5667 -144.7653 CTOA2 Chistochina River near Glennallen AK 62.6050 -144.6333 DCKA2 Dahl Creek near Kobuk AK 66.9461 -156.9089 DELA2 Delta River near Paxon AK 63.2031 -145.8142 EKLA2 Eklutna Lake near Eklutna AK 61.4167 -149.1167 ENNA2 Tanana River at Nenana AK 64.5667 -149.0961 EOGA2 Eklutna River at old Glenn Hwy near Eklutna AK 61.4503 -149.3672 ERBA2 Eagle River at Glenn Hwy Bridge AK 61.3108 -149.5744 FCKA2 Fish Creek near Ketchikan AK 55.3919 -131.1939 FLSA2 Falls Creek near Petersburg AK 56.6822 -132.9222 FMKA2 Fortymile River at Walker Fork AK 64.0761 -141.6306 FMMA2 Fortymile River at Mosquito Fork AK 64.0667 -141.9928 FMRA2 Fortymile River at Taylor Hwy AK 64.2797 -141.3133 FMSA2 Fortymile River at South Fork AK 64.0578 -141.7672 FMWA2 Fortymile River at West Fork AK 63.8894 -142.2322 GAKA2 Gakona River at Tok Cutoff Bridge AK 62.3000 -145.3000 GBDA2 Goodpaster River near Big Delta AK 64.4506 -144.9422 GCGA2 Glacier Creek at Girdwood AK 60.9333 -149.1667 GCJA2 Gold Creek above Juneau AK 58.3069 -134.4014 GCSA2 Susitna River at Gold Creek AK 62.7675 -149.6917 GLCA2 Glacier Creek in Seward at Bruno Road AK 60.1803 -149.3797 GPOA2 Gulkana River at Paxson Lake Outlet AK 62.6917 -145.6167 GROA2 Grouse Lake at Grouse Creek AK 60.1989 -149.3736 GRSA2 Gulkana River at Sourdough AK 62.5208 -145.5308 GULA2 Gulkana River at Richardson Highway Bridge AK 62.2667 -145.3833 GYRA2 Yukon River at Galena AK 64.7367 -156.9344 HNRA2 Nenana River at Healy AK 63.8500 -148.9667 HOCA2 Hobo Creek near Petersburg AK 56.7939 -132.8731 HRWA2 Harding River near Wrangell AK 56.2133 -131.6367 HUSA2 Koyukuk River at Huslia AK 65.4192 -156.2383 IKPA2 Ikpikpuk River near Barrow AK 69.7667 -154.6639 ILRA2 Iliamna River near Pedro Bay AK 59.7586 -153.8447 JDCA2 Jordan Creek near Juneau AK 58.3631 -134.5797 JORA2 Johnson River near Tuxedni Bay AK 60.0947 -152.9106 KDKA2 Terror River near Kodiak AK 57.6947 -153.1617 KEYA2 Kenai River at Kenai Keys AK 60.5278 -150.6000 KIAA2 Kobuk River at Kiana AK 66.9667 -160.1333 KIGA2 Kvichak River at Igiugig AK 59.3289 -155.8992 KLCA2 Kuskokwim River at Liskys Crossing AK 62.0475 -156.2117 KLUA2 Klutina River near Glennallen AK 61.9528 -145.3064 KNKA2 Knik River at Old Glenn Hwy AK 61.5050 -149.0306 KOWA2 Kroto Creek at Oilwell Road AK 62.3483 -150.6336 KRAA2 Kuskokwim River at Aniak AK 61.5872 -159.5483 KRGA2 Kahtaheena River near Gustav AK 58.4217 -135.6003 KRHA2 Koyukuk River at Hughes AK 66.0472 -154.2578 KRKA2 Kenai River below Killey River AK 60.5003 -150.6656 KUPA2 Kuparuk River near Deadhorse AK 70.2817 -148.9597 LIGA2 Lignite Creek near Healy AK 63.9047 -148.9836 LSHA2 Little Susitna R at Parks Hwy Bridge AK 61.6253 -149.8011 LSOA2 Little Susitna R at Hatcher Pass Rd Bridge AK 61.7097 -149.2319 LSUA2 Little Susitna R below Hatcher Pass Bridge AK 61.7108 -149.2294 MACA2 MacLaren River at Denali Hwy AK 63.1197 -146.5340 MAGA2 Matanuska River at Glacier Park Resort AK 61.7933 -147.7981 MATA2 Matanuska River at Old Glenn Hwy AK 61.6089 -149.0694 MCAA2 Montana Creek at Mendenhall Loop Bridge AK 58.3978 -134.6089 MCDA2 Chena River near Chena Lakes AK 64.8008 -147.2278 MCGA2 Kuskokwim River at McGrath AK 62.9500 -155.5833 MDBA2 Copper River at Million Dollar Bridge AK 60.6717 -144.7447 MFKA2 Koyukuk River near Wiseman AK 67.4383 -150.0750 MHSA2 Tanana River at Manley Hot Springs AK 65.0014 -150.6322 MNBA2 Mendenhall River at Mendenhall Loop Bridge AK 58.4042 -134.5844 MNDA2 Mendenhall Lake at Lake Level AK 58.4275 -134.5783 MONA2 Montana Creek at Parks Highway Bridge AK 62.1047 -150.0602 MOWA2 Moose Creek at Oilwell Road AK 62.3169 -150.4469 MPTA2 Trail River at Old Seward Hwy Bridge AK 60.4333 -149.3667 MXYA2 Kennicott River at McCarthy AK 61.4180 -142.9961 NEBA2 Nabesna River at Northway Village AK 62.9847 -141.9556 NELA2 Little Nelchina River at Glenn Hwy AK 62.0833 -146.9833 NINA2 Ninilchik River at Ninilchik Road Bridge AK 60.0400 -151.6100 NRDA2 Nuyakuk River near Dillingham AK 59.9356 -158.1878 NSHA2 Nushagak River at Ekwok AK 59.3492 -157.4731 NUIA2 Fish Creek near Nuiqsut AK 70.2703 -151.8725 NULA2 Yukon River at Nulato AK 64.7272 -158.0792 OBRA2 O'Brien Creek near Chicken AK 64.3158 -141.4169 OBUA2 Kobuk River at Kobuk AK 66.9000 -156.8667 PHLA2 Phelan Creek near base of Gulkana Glacier AK 63.2408 -145.4675 PRBQ9 Porcupine River near Canada Border AK 67.4242 -140.8911 RBYA2 Yukon River at Ruby AK 64.7333 -155.5000 RCBA2 Russell Creek near Cold Bay AK 55.1778 -162.6875 RESA2 Resurrection River at Exit Glacier Bridge AK 60.1953 -149.5878 RLKA2 Russell Lake near Yakutat AK 59.9178 -139.3822 SALA2 Salcha River at Richardson Hwy Bridge AK 64.4667 -146.9167 SCCA2 Sinona Creek near Chistochina AK 62.5900 -144.6497 SCKA2 Staney Creek near Klawock AK 55.8014 -133.1086 SGRA2 Sagavanirktok River at Pump Station #3 AK 69.0150 -148.8172 SHIA2 Ship Creek above Glenn Hwy AK 61.2167 -149.6333 SIXA2 Sixmile Creek near Hope AK 60.8292 -149.4189 SKGA2 Skagway River at Skagway River Bridge AK 59.4547 -135.3136 SKLA2 Kenai River below Skilak Lake AK 60.4667 -150.5989 SKWA2 Skwentna River at Skwentna AK 61.9619 -151.1669 SNKA2 Snake River at Nome AK 64.5642 -165.5072 SNOA2 Snow River near Seward AK 60.2864 -149.3386 SPRA2 Spruce Creek near Seward AK 60.0694 -149.4522 SRRA2 Resurrection River at Seward Hwy Bridge AK 60.1283 -149.4167 SRYA2 Situk River near Yakutat AK 59.5833 -139.4919 STJQ1 Lake Champlain/Richelieu River at St. Jean NY 45.3015 -73.2500 STKA2 Stikine River near Mouth AK 56.7000 -132.1333 STRA2 Starrigavan Creek near Sitka AK 57.1253 -135.3317 SUNA2 Susitna River at Parks Hwy Bridge AK 62.1833 -150.1833 SXRA2 Kenai River at Soldotna AK 60.4775 -151.0794 TAFA2 Tanana River at Fairbanks AK 64.7928 -147.8389 TALA2 Yukon River at Tanana AK 65.1750 -152.1067 TAZA2 Tazlina River at Richardson Hwy Bridge AK 62.0556 -145.4261 TKTA2 Talkeetna River at Railroad Bridge AK 62.3333 -150.1167 TKUA2 Taku River near Canada Border AK 58.5386 -133.7000 TLMO3 Wilson River near Tillamook OR 45.4759 -123.7250 TONA2 Tonsina River at Richardson Hwy Bridge AK 61.5500 -145.1833 TRPA2 Twentymile River near Portage AK 60.8931 -148.9272 TRTA2 Talkeetna River near Talkeetna above RR Bridge AK 62.3300 -150.0000 TSGA2 Tanana River at Tanacross AK 63.3633 -143.3436 TYAA2 Taiya River near Skagway AK 59.5125 -135.3447 UCHA2 Chena River at Mile 40 Bridge AK 64.9000 -146.4167 UNRA2 Upper Nuka River near Park Boundary AK 59.6844 -150.7033 UPEA2 Upper Earl West Creek near Wrangell AK 56.2858 -132.1308 URUA2 Unalakleet River above Chiroskey River AK 63.9272 -160.3394 URWA2 Unuk River near Wrangell AK 56.2406 -130.8803 WILA2 Willow Creek at Parks Highway AK 61.7667 -150.0667 WLCA2 Wolverine Creek near Lawing AK 60.3706 -148.8967 WLWA2 Willow Creek near Willow AK 61.7772 -149.8986 WMCA2 Wiseman Creek at Wiseman AK 67.4100 -150.1053 WULA2 Wulik River below Tutak Creek AK 67.8761 -163.6744 YDAQ9 Yukon River at Dawson AK 64.0833 -139.2167 YEAA2 Yukon River at Eagle AK 64.7894 -141.1978 YFYA2 Yukon River at Fort Yukon AK 66.5636 -145.2756 YLKA2 Yentna River at Lake Creek AK 61.9058 -150.9069 YPSA2 Yukon River at Pilot Station AK 61.9344 -162.8806 YRBA2 Yukon River at the bridge near Stevens Village AK 65.8833 -149.7167 ARKA1 Black Warrior River at Smith Dam AL 33.9406 -87.1078 ARTA1 Pea River near Ariton AL 31.5947 -85.7831 ATNA1 Limestone Creek near Athens (Capshaw) AL 34.7517 -86.8233 AVLA1 Tombigbee River at Bevill Lock and Dam AL 33.2100 -88.2878 BCKA1 Mobile River at Barry Steam Plant AL 31.0094 -88.0153 BELA1 Choctawhatchee River near Bellwood AL 31.1592 -85.7844 BGWA1 Big Wills Creek near Fort Payne AL 34.4381 -85.7672 BLDA1 Black Warrior River at Bankhead Lock and Dam AL 33.4583 -87.3542 BNAA1 Big Nance Creek at Courtland AL 34.6700 -87.3172 BSBA1 Flint River at Brownsboro AL 34.7492 -86.4467 BWMA1 Murder Creek at Brewton AL 31.1008 -87.0689 BWTA1 Conecuh River at Brewton AL 31.0578 -87.0542 CATA1 Catoma Creek near Montgomery AL 32.3072 -86.2994 CCSA1 Coosa River at Logan Martin Dam AL 33.4333 -86.3333 CHGA1 Cahaba River near Cahaba Heights AL 33.4156 -86.7397 CHLA1 Coosa River at Childersburg AL 33.2833 -86.3333 CHSA1 Flint River near Chase AL 34.8233 -86.4811 CKLA1 Cahaba River at Centreville AL 32.9500 -87.1333 CLBA1 Alabama River near Claiborne Dam AL 31.6150 -87.5506 CLDA1 Tombigbee River near Coffeeville Dam AL 31.7556 -88.1283 CLTA1 Coosa River at Lay Dam AL 32.9627 -86.5175 COLA1 Chattahoochee River at George W. Andrews L&D AL 31.2592 -85.1103 CRDA1 Black Warrior River at Cordova AL 33.7575 -87.1703 CREA1 Coosa River at Weiss Dam AL 34.1333 -85.8000 CRRA1 Tallapoosa River at Yates Dam AL 32.5716 -85.8895 DECA1 Tennessee River at Decatur AL 34.6131 -86.9739 DLDA1 Tombigbee River at Demopolis Lock and Dam AL 32.5192 -87.8794 ELBA1 Pea River at Elba AL 31.4133 -86.0630 ENSA1 Village Creek at Avenue W in Ensley AL 33.5175 -86.8792 FLMA1 Big Escambia Creek at Flomaton AL 31.0125 -87.2625 FLOA1 Tennessee River at Florence AL 34.7869 -87.6700 FSHA1 Fish River near Silverhill AL 30.5453 -87.7986 GAPA1 Coosa River at Gadsden AL 34.0139 -85.9706 GNSA1 Tombigbee River at Gainesville Lock and Dam AL 32.8347 -88.1342 GNVA1 Choctawhatchee River near Geneva AL 31.0411 -85.8522 HBPA1 Tallapoosa River at Horseshoe Bend AL 32.9772 -85.7397 LRYA1 Tombigbee River near Leroy AL 31.4858 -87.9089 LVNA1 Sucarnoochee River at Livingston AL 32.5811 -88.1897 MADA1 Indian Creek at Madison AL 34.6972 -86.6997 MGMA1 Alabama River at Montgomery AL 32.3919 -86.3178 MGYA1 Tallapoosa River at Tallapoosa Water Plant AL 32.4392 -86.2025 MHDA1 Tallapoosa River at Harris Dam AL 33.2547 -85.6167 MILA1 Tallapoosa River at Milstead AL 32.4497 -85.8981 MNJA1 Cahaba River at Marion Junction AL 32.4439 -87.1803 MRFA1 Alabama River near Miller's Ferry AL 32.1000 -87.3981 NEWA1 Choctawhatchee River near Newton AL 31.3427 -85.6105 RGLA1 Coosa River at Neely Henry Dam AL 33.7842 -86.0531 RVFA1 Conecuh River at River Falls AL 31.3481 -86.5294 SARA1 Bayou Sara at Saraland AL 30.8167 -88.0667 SAYA1 Locust Fork at Sayre AL 33.7097 -86.9833 SELA1 Alabama River at Selma AL 32.4100 -87.0153 SSNA1 Pea River near Samson AL 31.1125 -86.0994 SUTA1 Cahaba River at Suttle AL 32.5411 -87.1783 TCLA1 Black Warrior River at Holt Lock and Dam AL 33.2531 -87.4492 TLLA1 Tallapoosa River at Martin Dam AL 32.6758 -85.9084 TODA1 Black Warrior River at Oliver Lock and Dam AL 33.2097 -87.5936 TYLA1 Alabama River at Henry Lock and Dam AL 32.3167 -86.7833 VRBA1 Coosa River at Mitchell Dam AL 32.7977 -86.4500 WDLA1 Tallapoosa River at Wadley AL 33.1167 -85.5608 WDVA1 Paint Rock River near Woodville AL 34.6167 -86.3000 WETA1 Coosa River at Wetumpka AL 32.5606 -86.1869 WHIA1 Tennessee River at Whitesburg AL 34.5717 -86.5581 WLDA1 Black Warrior River at Selden Lock and Dam AL 32.7772 -87.8414 WPKA1 Coosa River at Jordan Dam AL 32.6163 -86.2553 AKDA4 Ouachita River at Arkadelphia AR 34.1211 -93.0461 AUGA4 White River above Augusta AR 35.3000 -91.3833 BAGA4 White River at Batesville AR 35.7667 -91.6333 BHTA4 Little Missouri River near Boughton AR 33.8833 -93.3000 BKRA4 Black River at Black Rock AR 36.1042 -91.0972 BRYA4 Kings River near Berryville AR 36.4267 -93.6208 BTNA4 Saline River at Benton AR 34.5667 -92.6167 CALA4 Ouachita River at Thatcher L&D AR 33.3047 -92.4850 CAMA4 Ouachita River at Camden AR 33.6000 -92.8167 CLDA4 White River at Clarendon AR 34.6789 -91.3167 CLRA4 White River at Calico Rock AR 36.1156 -92.1436 CRGA4 Black River at Corning AR 36.4000 -90.5333 DANA4 Petit Jean River at Danville AR 35.0667 -93.4000 DARA4 Arkansas River at Dardanelle AR 35.2261 -93.1494 DEQA4 Cossatot River near DeQueen AR 34.0500 -94.2167 DIRA4 Saline River near Dierks AR 34.1000 -94.0833 DQNA4 Rolling Fork near DeQueen AR 34.0500 -94.4167 DSCA4 White River at Des Arc AR 34.9667 -91.5000 FELA4 Ouachita River at Felsenthal Lock and Dam AR 33.0764 -92.1236 FLTA4 Red River at Fulton AR 33.6089 -93.8131 GEOA4 White River at Georgetown AR 35.1333 -91.4500 GLBA4 Buffalo River at Gilbert AR 35.9833 -92.7167 GRVA4 Fourche LaFave River near Gravelly AR 34.8725 -93.6567 HEEA4 Mississippi River at Helena AR 34.5203 -90.5907 HRGA4 Little River at Horatio AR 33.9181 -94.3897 HUSA4 Fourche LaFave River near Houston AR 35.0122 -92.7233 IMBA4 Spring River at Imboden AR 36.2000 -91.1667 INGA4 Red River at Index AR 33.5500 -94.0333 JUDA4 Little Red River at Judsonia AR 35.2667 -91.6333 LCKA4 Saline River near Lockesburg AR 33.9667 -94.0667 LCRA4 St. Francis River at Lake City AR 35.8300 -90.4400 LITA4 Arkansas River at Little Rock AR 34.7500 -92.2667 MLBA4 Mulberry River near Mulberry AR 35.5772 -94.0155 MORA4 Arkansas River at Morrilton AR 35.1275 -92.7319 MSNA4 St. Francis River at Madison AR 35.0106 -90.7181 NPTA4 White River at Newport AR 35.6000 -91.2833 OZGA4 Arkansas River at Ozark L/D TW AR 35.4275 -93.8128 PBFA4 Arkansas River at Pine Bluff AR 34.2833 -92.0000 PFAA4 Arkansas River at Pendleton AR 33.9769 -91.3842 PLGA4 L'Anguille River at Palestine AR 34.9722 -90.8861 POCA4 Black River at Pocahontas AR 36.2500 -90.9667 PTTA4 Cache River at Patterson AR 35.2667 -91.2333 RDTA4 Ouachita River at Remmel Dam Below Jones Mill AR 34.4333 -92.9000 RIGA4 Right Hand Chute Little River at Rivervale AR 35.6722 -90.3367 RVSA4 Eleven Point River at Ravenden Springs AR 36.3500 -91.1167 RYEA4 Saline River at Rye AR 33.7000 -92.0333 SBFA4 Red River at Sprinbank Ferry AR 33.0914 -93.8606 SCHA4 White River at St. Charles AR 34.3861 -91.1347 SFRA4 St. Francis River at St. Francis AR 36.4536 -90.1417 SJOA4 Buffalo River near St Joe AR 35.9844 -92.7650 TODA4 Arkansas River at Toad Suck L&D AR 35.0833 -92.5333 VBRA4 Lee Creek near Van Buren LCR AR 35.4838 -94.3927 VBUA4 Arkansas River at Van Buren AR 35.4313 -94.3561 AFRA3 Agua Fria River near Rock Springs AZ 34.0167 -112.1667 ALMA3 Bill Williams River at Alamo Lake AZ 34.2167 -113.6167 BNMA3 Bonita Creek near Morenci AZ 32.9556 -109.5306 BRTA3 Verde River at Bartlett Lake AZ 33.8181 -111.6311 BWTA3 Brawley Wash near Three Points AZ 32.0756 -111.3381 CAVA3 Cave Creek near Cave Creek AZ 33.8872 -111.9533 CCCA3 Chinle Creek at Chinle AZ 36.1550 -109.5381 CCMA3 Chinle Creek near Mexican Water AZ 36.9500 -109.7167 CLDA3 Gila River below Coolidge Dam AZ 33.1756 -110.5272 CSCA3 Santa Cruz River at Cortaro AZ 32.3500 -111.0900 DUUA3 Gila River at Duncan AZ 32.7244 -109.0992 ECMA3 Eagle Creek near Morenci AZ 33.0437 -109.4417 GDTA3 Gila River near Dateland AZ 32.8822 -113.5406 GIDA3 Gila River near Dome AZ 32.7608 -114.4197 GLCA3 Gila River near Calva AZ 33.1856 -110.2194 GLHA3 Gila River near Solomon AZ 32.8683 -109.5106 GLKA3 Gila River at Kelvin AZ 33.1028 -110.9758 GRCA3 Granite Creek near Prescott AZ 34.5667 -112.4500 GRMA3 Gila River near Maricopa AZ 33.1686 -112.0067 HAMA3 Hassayampa River near Morristown AZ 33.8833 -112.6614 HSTA3 Hassayampa River near Arlington AZ 33.3472 -112.7250 LCCA3 Little Colorado River near Cameron AZ 35.8778 -111.4111 LCJA3 Little Colorado River near Joseph City AZ 34.9000 -110.2500 LCSA3 Little Colorado River near St Johns AZ 34.4506 -109.3617 LCWA3 Little Colorado River near Winslow AZ 35.0000 -110.6500 LHBA3 Little Colorado River near Holbrook AZ 34.8977 -110.1625 LKPA3 Agua Fria River at Lake Pleasant AZ 33.8383 -112.2661 OACA3 Oak Creek near Cornville AZ 34.7667 -111.8833 OAKA3 Oak Creek near Sedona AZ 34.8617 -111.7611 PLFA3 Paria River at Lees Ferry AZ 36.8667 -109.3617 PRKA3 Gila River at Painted Rock Lake AZ 33.0667 -113.0167 PUCA3 Rio Puerco near Chambers AZ 35.1833 -109.4500 SAPA3 San Pedro River at Charleston AZ 31.6258 -110.1739 SCCA3 Santa Cruz River at Green Valley AZ 31.8714 -110.9794 SFCA3 San Francisco River at Clifton AZ 33.0494 -109.2953 SFFA3 Salt River at 51st Ave-Phoenix AZ 33.3997 -112.1686 SLCA3 Salt River near Chrysotile -Salt River Canyon AZ 33.7981 -110.4992 SLPA3 Salt River at Priest Road-Tempe AZ 33.4336 -111.9603 SLRA3 Salt River near Roosevelt AZ 33.6194 -110.9208 SMBA3 Santa Maria River near Bagdad AZ 34.3000 -113.3333 SPPA3 San Pedro River near Palominas AZ 31.3800 -110.1106 SPRA3 San Pedro River near Redington AZ 32.3806 -110.4458 SPTA3 San Pedro River near Tombstone AZ 31.7508 -110.2006 STBA3 Santa Cruz River near Tubac AZ 31.6128 -111.0408 SUPA3 Havasu Creek at Supai AZ 36.2533 -112.7733 SYCA3 Sycamore Creek near Ft McDowell AZ 33.6942 -111.5411 TNRA3 Tonto Creek near Roosevelt AZ 33.9800 -111.3028 TSCA3 Santa Cruz River at Congress Street AZ 32.2219 -110.9811 VDCA3 Verde River near Clarkdale AZ 34.8500 -112.0667 VEVA3 Verde River near Camp Verde AZ 34.4483 -111.7892 WKPA3 Big Sandy River near Wikieup AZ 34.4667 -113.6167 NFFQ2 North Fork Flathead River at "Flathead, British Columbia" BC 49.0006 -114.4764 APCC1 Napa River near Napa CA 38.3683 -122.3022 ARCC1 Mad River near Arcata CA 40.9097 -124.0597 AROC1 Pajaro River at Chittenden CA 36.9003 -121.5967 ATIC1 Sacramento-San Joaquin Delta at Antioch CA 38.0167 -121.8000 BDBC1 Sacramento River above Bend Bridge CA 40.2886 -122.1856 BRDC1 Salinas River near Bradley CA 35.9303 -120.8678 BRGC1 Van Duzen River near Bridgeville CA 40.4794 -123.8897 BTCC1 Sacramento River at Butte City CA 39.4578 -121.9931 CLAC1 Sacramento River at Colusa Weir CA 39.2367 -121.9936 CLEC1 West Walker River near Coleville CA 38.5133 -119.4489 CLKC1 Clear Lake at Lakeport CA 39.0392 -122.9122 CLLC1 Calleguas Creek at California State University Channel Islands Bridge CA 34.1794 -119.0388 CLSC1 Sacramento River at Moulton Weir CA 39.3383 -122.0217 CLUC1 Sacramento River at Colusa Bridge CA 39.2142 -121.9992 CNBC1 Pit River near Canby CA 41.4061 -120.9267 CREC1 Smith River near Crescent City CA 41.7894 -124.0539 CYEC1 Coyote Creek at Edenvale CA 37.2708 -121.7964 FARC1 Truckee River at Farad CA 39.4281 -120.0331 FMWC1 Sacramento River at Fremont Weir CA 38.7669 -121.6669 FRNC1 Eel River at Fernbridge CA 40.6150 -124.1603 FSNC1 San Diego River at Fashion Valley CA 32.7650 -117.1678 FTDC1 Smith River near Fort Dick CA 41.8808 -124.1353 FTJC1 Scott River near Fort Jones CA 41.6408 -123.0139 FTSC1 Eel River at Fort Seward CA 40.2186 -123.6325 GARC1 Sisquoc River at Garey CA 34.8939 -120.3056 GRIC1 Feather River at Gridley CA 39.3669 -121.6461 GSJC1 Guadalupe River above Hwy 101 at San Jose CA 37.3739 -121.9319 GUEC1 Russian River at Guerneville CA 38.5039 -122.9969 HAMC1 Sacramento River at Hamilton City CA 39.7514 -121.9972 HAPC1 Indian Creek near Happy Camp CA 41.8353 -123.3819 HEAC1 Russian River near Healdsburg CA 38.6133 -122.8353 HOOC1 Trinity River near Hoopa CA 41.0475 -123.6767 HOPC1 Russian River near Hopland CA 39.0267 -123.1294 IRGC1 Klamath River below Iron Gate Dam CA 41.9281 -122.4431 KLMC1 Klamath River near Klamath CA 41.5111 -123.9783 LSBC1 Yolo Bypass at Lisbon CA 38.4750 -121.5872 MCNC1 Cosumnes River at McConnell CA 38.3581 -121.3428 MDSC1 Tuolumne River at Modesto CA 37.6272 -120.9864 MHBC1 Cosumnes River at Michigan Bar CA 38.5003 -121.0442 MLIC1 Sacramento-San Joaquin Delta at Mallard Island CA 38.0500 -121.8500 MOSC1 San Joaquin River at Mossdale Bridge CA 37.7861 -121.3058 MRNC1 South Fork Eel River near Miranda CA 40.1814 -123.7758 NCOC1 Feather River at Nicolaus CA 38.8911 -121.6039 NRWC1 Santa Ynez River at Narrows CA 34.6372 -120.4244 NVRC1 Navarro River at Navarro CA 39.1722 -123.6683 NWMC1 San Joaquin River at Newman CA 37.3506 -120.9761 OBBC1 Stanislaus River at Orange Blossom Bridge CA 37.7831 -120.7500 ONSC1 Klamath River at Orleans CA 41.3039 -123.5356 ORFC1 Sacramento River at Ord Ferry CA 39.6278 -121.9914 ORIC1 Redwood Creek at Orick CA 41.2994 -124.0500 PATC1 San Joaquin River at Patterson CA 37.4939 -121.0811 PLYC1 South Fk Pit River near Likely CA 41.2308 -120.4361 POHC1 Merced River at Pohono Bridge CA 37.7169 -119.6653 PRBC1 Salinas River at Paso Robles CA 35.6278 -120.6856 RDBC1 Sacramento River at Red Bluff Diversion Dam CA 40.1539 -122.2008 RDRC1 Carmel River at Robles Del Rio CA 36.4744 -121.7278 RMSC1 Cache Creek at Rumsey Bridge CA 38.8900 -122.2381 RVBC1 Sacramento River at Rio Vista Bridge CA 38.1564 -121.6883 SACC1 Sacramento River at I Street Bridge CA 38.5867 -121.5044 SAMC1 American River at H Street CA 38.5689 -121.4225 SBRC1 Salmon River at Sommes Bar CA 41.3778 -123.4764 SCOC1 Eel River near Scotia CA 40.4917 -124.1006 SEIC1 Klamath River near Seiad Valley CA 41.8539 -123.2311 SESC1 Sespe Creek near Fillmore CA 34.4508 -118.9250 SHEC1 Napa River near St. Helena CA 38.5114 -122.4547 SLOC1 San Luis Rey River at Oceanside CA 33.2181 -117.3594 SPRC1 Salinas River near Spreckels CA 36.6311 -121.6714 SRFC1 Santa Clara River at Freeman Diversion CA 34.2994 -119.1077 STVC1 Merced River at Stevinson CA 37.3708 -120.9294 SUSC1 Susan River at Susanville CA 40.4139 -120.6631 TEHC1 Sacramento River at Tehama Bridge CA 40.0289 -122.1172 THTC1 Mokelumne River at Benson Ferry CA 38.2556 -121.4392 TISC1 Sacramento River at Tisdale Weir CA 39.0267 -121.8211 VNCC1 Sacramento-San Joaquin Delta at Venice Island CA 38.0500 -121.4961 VNSC1 San Joaquin River at Vernalis CA 37.6761 -121.2653 VONC1 Sacramento River at Verona CA 38.7808 -121.6033 VRVC1 Ventura River at Foster Park CA 34.3513 -119.3063 VWBC1 Sacramento River at Vina-Woodson Bridge CA 39.9089 -122.0911 WOOC1 West Fork Carson River at Woodfords CA 38.7697 -119.8328 YDRC1 Santa Margarita River at Ysidora CA 33.3111 -117.3463 YLOC1 Cache Creek at Yolo CA 38.7272 -121.8061 YREC1 Shasta River near Yreka CA 41.8231 -122.5944 YUBC1 Feather River at Yuba City CA 39.1389 -121.6047 ADLC2 Arkansas River at Avondale CO 38.2481 -104.3986 ALAC2 Rio Grande at Alamosa CO 37.4811 -105.8794 ALEC2 East River at Almont CO 38.6644 -106.8478 ALTC2 Taylor River at Almont CO 38.6644 -106.8447 APNC2 Roaring Fork River near Aspen CO 39.1800 -106.8014 ARCC2 Arkansas River at Rocky Ford CO 38.0644 -103.6903 BLRC2 Blue River at "Dillon, CO" CO 39.6256 -106.0658 BZNC2 South Platte River near Balzac CO 40.3572 -103.5283 CAMC2 Colorado River at Cameo CO 39.2389 -108.2692 CBGC2 Colorado River near Granby CO 40.1208 -105.9000 CDMC2 Arkansas River below Catlin Dam CO 38.1258 -103.9114 CGGC2 Yampa River below Craig CO 40.4808 -107.6136 CLOC2 Uncompahgre River at Colona CO 38.3314 -107.7789 CMRC2 Cimarron River near Cimarron CO 38.2600 -107.5453 CNCC2 Arkansas River at Canon City CO 38.4339 -105.2567 CSLC2 Colorado River near CO-UT State Line CO 39.1330 -109.0260 DBDC2 Dolores River near Bedrock CO 38.3569 -108.8327 DCKC2 Dallas Creek near Ridgway CO 38.1777 -107.7577 DELC2 Gunnison River at Delta CO 38.7531 -108.0778 DNRC2 Rio Grande near Del Norte CO 37.6894 -106.4606 DNVC2 South Platte River at Denver CO 39.7597 -105.0028 DOLC2 Dolores River at Dolores CO 37.4725 -108.4969 DRBC2 Clear Creek at Derby CO 39.8283 -104.9583 DRGC2 Animas River at Durango CO 37.2792 -107.8797 DRMC2 Dolores River below McPhee Reservoir CO 37.5758 -108.5758 DRRC2 Dolores River near Rico CO 37.6389 -108.0597 EGLC2 Colorado River near Dotsero CO 39.6439 -107.0772 ELHC2 Elkhead Creek near Hayden CO 40.5916 -107.3203 ELMC2 Elkhead Creek near Craig CO 40.5419 -107.3972 FCHC2 Fountain Creek at Pueblo CO 38.2878 -104.6006 FHAC2 Fountain Creek near Fountain CO 38.6017 -104.6697 FNEC2 Fountain Creek at Colorado Springs CO 38.8164 -104.8222 FPTC2 Frying Pan River near Thomasville CO 39.3447 -106.6730 FTDC2 Cache La Poudre River at The Canyon CO 40.6644 -105.2239 GCOC2 Colorado River above Glenwood Springs CO 39.5550 -107.3370 GJNC2 Gunnison River near Grand Junction CO 38.9833 -108.4500 GLDC2 Clear Creek at Golden CO 39.7531 -105.2347 GPSC2 Eagle River at Gypsum CO 39.6494 -106.9531 GRPC2 Cache La Poudre River near Greeley CO 40.4178 -104.6394 GUSC2 Gunnison River near Gunnison CO 38.5419 -106.9492 GWSC2 Roaring Fork River at Glenwood Springs CO 39.5436 -107.3289 HNDC2 South Platte River at Henderson CO 39.9219 -104.8678 JULC2 South Platte River near Julesburg CO 40.9792 -102.2542 KERC2 South Platte River near Kersey CO 40.4122 -104.5628 KRMC2 Colorado River near Kremmling CO 40.0367 -106.4394 LAPC2 Purgatoire River near Las Animas CO 38.0339 -103.2000 LEDC2 Arkansas River at Leadville CO 39.2572 -106.3431 LMAC2 Arkansas River at Lamar CO 38.1058 -102.6181 LOVC2 Plum Creek near Sedalia CO 39.4383 -104.9825 LPVC2 Los Pinos River near Bayfield CO 37.3833 -107.5833 LXHC2 Arkansas River at La Junta CO 37.9906 -103.5319 MBLC2 Yampa River near Maybell CO 40.5028 -108.0292 MNRC2 Mancos River near Mancos CO 37.3536 -108.2611 MRRC2 Bear Creek at Morrison CO 39.6531 -105.1953 NGTC2 North Platte River near Northgate CO 40.9375 -106.3378 NPTC2 Arkansas River at Nepesta CO 38.1789 -104.1389 PCCC2 Plateau Creek near Cameo CO 39.1833 -108.2667 PDAC2 Arkansas River at Pueblo Dam CO 38.2717 -104.7175 PDLC2 Arkansas River at Parkdale CO 38.4872 -105.3731 PGMC2 Purgatoire River at Madrid CO 37.1292 -104.6389 PGRC2 Purgatoire River below Trinidad Reservoir CO 37.1436 -104.5469 PNNC2 Fountain Creek at Pinon CO 38.4397 -104.5931 POUC2 Cache La Poudre River at Fort Collins CO 40.5892 -105.0692 PRTC2 Arkansas River at Portland CO 38.3883 -105.0156 PSPC2 San Juan River at Pagosa Springs CO 37.2661 -107.0103 PTRC2 Purgatoire River at Trinidad CO 37.1722 -104.5075 RCYC2 Crystal River near Redstone CO 39.2322 -107.2267 RERC2 Eagle River at Redcliff CO 39.5083 -106.3661 SALC2 Arkansas River at Salida CO 38.5458 -106.0100 SCCC2 Surface Creek at Cedaredge CO 38.9000 -107.9167 SCVC2 St Charles River at Vineland CO 38.2456 -104.4853 SHRC2 Bear Creek at Sheridan CO 39.6522 -105.0325 SJFC2 San Juan River near Four Corners CO 37.0056 -109.0333 SMPC2 San Miguel River near Placerville CO 38.0425 -108.1317 SNCC2 Surface Creek near Cedaredge CO 38.9833 -107.8500 SPTC2 South Platte River at South Platte CO 39.4092 -105.1694 STMC2 Yampa River at Steamboat Springs CO 40.4833 -106.8333 UCRC2 Uncompahgre River near Ridgway CO 38.1833 -107.7333 UNRC2 Uncompahgre River below Ridgway Reservoir CO 38.2381 -107.7586 WFRC2 Williams Fork near Parshall CO 40.0350 -106.2047 WNAC2 South Platte River near Weldona CO 40.3219 -103.9214 WRMC2 White River near Meeker CO 40.0336 -107.8617 WSVC2 Arkansas River at Wellsville CO 38.5025 -105.9392 BEAC3 Naugatuck River above Beacon Falls CT 41.4500 -73.0667 BKFC3 Still River at Route 7 at Brookfield Center CT 41.4661 -73.4036 FLVC3 Housatonic River at Falls Village CT 41.9500 -73.3833 GAYC3 Housatonic River at Gaylordsville CT 41.6530 -73.4902 HFDC3 Connecticut River at Hartford CT 41.7694 -72.6678 JCYC3 Quinebaug River above Jewett City CT 41.5978 -71.9847 MDDC3 Connecticut River at Middletown CT 41.5611 -72.6119 QPCC3 Quinnipiac River above Southington CT 41.6000 -72.8833 SBYC3 Pomperaug River above Southbury CT 41.4806 -72.2250 SIMC3 Farmington River at Simsbury CT 41.8667 -72.8000 STVC3 Housatonic River at Stevenson CT 41.3833 -73.1667 TARC3 Farmington River at Tariffville CT 41.9083 -72.7611 TMVC3 Connecticut River at Thompsonville CT 41.9833 -72.6000 UNVC3 Farmington River at Unionville CT 41.7500 -72.8833 WALC3 Quinnipiac River above Wallingford CT 41.4494 -72.8414 WATC3 Naugatuck River above Waterbury CT 41.5575 -73.0544 WLMC3 Shetucket River at Willimantic CT 41.7000 -72.1500 YTCC3 Yantic River at Yantic CT 41.5500 -72.1167 GTND2 Potomac River at Washington-Wisconsin Ave DC 38.9022 -77.0631 CHBD1 Christina River at Coochs Bridge near Newark 3S DE 39.6372 -75.7283 DPKD1 White Clay Creek near Newark 4E DE 39.6992 -75.6750 RCCD1 Red Clay Creek at Wooddale DE 39.7628 -75.6365 WMND1 Brandywine Creek at Wilmington DE 39.7692 -75.5736 ALTF1 Chipola River near Altha FL 30.5339 -85.1653 APAF1 Apalachicola River at Apalachicola Bay (Tide Gage) FL 29.7183 -84.9692 ARCF1 Peace River at Arcadia FL 27.2181 -81.8739 ARHF1 Horse Creek near Arcadia FL 27.1992 -81.9886 BAKF1 Blackwater River near Baker FL 30.8333 -86.7347 BARF1 Peace River at Bartow FL 27.8986 -81.8433 BFDF1 Suwannee River at Branford FL 29.9556 -82.9278 BLOF1 Apalachicola River near Blountstown FL 30.4250 -85.1352 BLXF1 Ochlockonee River near Bloxham FL 30.3831 -84.6550 BRPF1 Perdido River near Barrineau Park FL 30.6903 -87.4403 BRUF1 Choctawhatchee River near Bruce-Ebro FL 30.4508 -85.8983 CARF1 Choctawhatchee River at Caryville FL 30.7756 -85.8278 CHAF1 Apalachicola River at Chattahoochee FL 30.7008 -84.8592 CONF1 Ochlockonee River near Concord FL 30.6689 -84.3053 CRMF1 Withlacoochee River at Croom FL 28.5925 -82.2222 CRVF1 Shoal River near Crestview FL 30.6972 -86.5708 CTYF1 Escambia River near Century FL 30.9650 -87.2342 DLAF1 St. Johns River other near Deland FL 29.0081 -81.3828 DNLF1 Withlacoochee River at Dunnellon FL 29.0458 -82.4647 DOUF1 Suwannee River at Dowling Park FL 30.2447 -83.2447 ECOF1 Econfina River near Perry FL 30.1706 -83.8239 ELFF1 Anclote River at Elfers FL 28.2139 -82.6667 ELLF1 Suwannee River at Ellaville FL 30.3844 -83.1719 FENF1 Fenholloway River near Perry FL 30.0711 -83.6625 FOLF1 Fenholloway River near Foley at US Hwy 27 FL 30.0981 -83.4719 FOWF1 Hillsborough River at Fowler Avenue FL 28.0500 -82.3667 FTWF1 Santa Fe River near Hildreth FL 29.9114 -82.8606 FWBF1 Suwannee River at Fowlers Bluff FL 29.4000 -83.0167 FWHF1 Santa Fe River near Fort White FL 29.8486 -82.7153 GENF1 St. Johns River above Lake Harney FL 28.7139 -81.0356 HLDF1 Withlacoochee River at Holder FL 28.9886 -82.3497 HVNF1 Ochlockonee River near Havana FL 30.5539 -84.3842 JBDF1 Ochlockonee River at Lake Talquin-Jackson Bluff Dam FL 30.3875 -84.6431 LAMF1 Aucilla River at Lamont FL 30.3697 -83.8069 LIKF1 Suwannee River near Suwannee Springs FL 30.3928 -82.9333 LITF1 Alafia River at Lithia FL 27.8719 -82.2114 LURF1 Suwannee River at Luraville FL 30.1667 -83.0833 MACF1 St. Marys River near Macclenny FL 30.3586 -82.0817 MALF1 Chipola River at Marianna FL 30.7727 -85.2167 MDLF1 Black Creek near Middleburg FL 30.1131 -81.9067 MHDF1 Shoal River near Mossy Head FL 30.7958 -86.3069 MKCF1 Myakka River at Myakka River State Park FL 27.2417 -82.3161 MKHF1 Manatee River at Myakka Head FL 27.4733 -82.2114 MLGF1 Yellow River at Milligan FL 30.7528 -86.6292 MLNF1 Big Coldwater Creek near Milton FL 30.7083 -86.9722 MORF1 Hillsborough River at Morris Bridge FL 28.0972 -82.3125 MTDF1 Manatee River at Manatee Dam FL 27.4833 -82.3500 MTSF1 Suwannee River at Manatee Springs FL 29.4833 -82.9833 NEPF1 St. Marks River near Newport FL 30.2672 -84.1489 NUTF1 Aucilla River near Mouth near Nutall Rise FL 30.1122 -83.9800 PINF1 Withlacoochee River near Pinetta FL 30.5953 -83.2597 PITF1 Choctawhatchee River near Pittman FL 30.9497 -85.8431 PLMF1 Palmdale FishEating Creek at PalmDale FL 26.9322 -81.3150 PNMF1 St. Andrew Bay near Panama City (Tide Gage) FL 30.1517 -85.6667 RCKF1 Suwannee River at Rock Bluff (Near Bell) FL 29.7911 -82.9244 RYEF1 Manatee River at Rye Bridge FL 27.5133 -82.3672 SMAF1 Apalachicola River near Sumatra FL 29.9492 -85.0156 SNFF1 St. Johns River near Sanford FL 28.8378 -81.3244 SNWF1 New River near Sumatra FL 30.0386 -84.8439 SOPF1 Sopchoppy River near Sopchoppy FL 30.1292 -84.4944 STEF1 Steinhatchee River near Cross City FL 29.7863 -83.3217 TRBF1 Withlacoochee River at Trilby FL 28.4797 -82.1778 TREF1 Santa Fe River at Three Rivers Estates FL 29.9333 -82.8000 VRNF1 Holmes Creek at Vernon FL 30.6266 -85.7124 WAHF1 Apalachicola River at Wewahitchak at Mile 44 (USACE) FL 30.1339 -85.1442 WCXF1 Suwannee River near Wilcox FL 29.5894 -82.9367 WDRF1 Apalachicola River at Lake Seminole (USACE) FL 30.7052 -84.8780 WIMF1 Little Manatee River at Wimauma FL 27.6708 -82.3528 WRGF1 Cypress Creek at Worthington Gardens FL 28.1856 -82.4008 WSPF1 Suwannee River at White Springs FL 30.3256 -82.7383 WWAF1 Apalachicola River at Mile 35 FL 30.0861 -85.1353 ZFSF1 Peace River at Zolfo Springs FL 27.5042 -81.8011 ZPHF1 Hillsborough River near Zephyrhills FL 28.1497 -82.2325 AANG1 Peachtree Creek at Atlanta GA 33.8194 -84.4078 ABBG1 Ocmulgee River at Abbeville GA 31.9381 -83.3078 ABNG1 Flint River at Albany GA 31.5942 -84.1442 ACDG1 Middle Oconee River near Arcade GA 34.0317 -83.5633 ADLG1 Little River near Adel GA 31.1550 -83.5439 AGSG1 Savannah River at Augusta 5th St GA 33.4767 -81.9542 APHG1 Big Creek near Alpharetta GA 34.0506 -84.2694 ATKG1 Satilla River at Atkinson GA 31.2211 -81.8675 AUGG1 Savannah River at Augusta GA 33.3667 -81.9500 AUSG1 Sweetwater Creek near Austell GA 33.7728 -84.6147 AYSG1 Satilla River near Waycross GA 31.2514 -82.3128 BAXG1 Altamaha River near Baxley GA 31.9389 -82.3536 BFYG1 Savannah River at Burton's Ferry GA 32.9389 -81.5028 BGEG1 Flint River at Bainbridge GA 30.9114 -84.5800 BVLG1 Turkey Creek near Byromville GA 32.1956 -83.9008 BWKG1 Apalachee River near Bostwick GA 33.7881 -83.4742 CARG1 Broad River near Carlton GA 34.0733 -83.0033 CHRG1 Altamaha River at Charlotte GA 31.9578 -82.5172 CLUG1 Flint River near Culloden GA 32.7214 -84.2325 CLYG1 Savannah River at Clyo GA 32.5281 -81.2689 CMUG1 Chattahoochee River at Columbus GA 32.4531 -84.9953 CNNG1 Etowah River at Canton GA 34.2397 -84.4964 CTVG1 Etowah River near Cartersville GA 34.1428 -84.8389 CTWG1 Big Cedar Creek at Cedartown GA 33.9833 -85.2500 DBNG1 Oconee River at Dublin GA 32.5444 -82.8947 DCTG1 Altamaha River at Doctortown GA 31.6544 -81.8281 DSNG1 Kinchafoonee Creek near Dawson GA 31.7644 -84.2533 DWSG1 Etowah River near Dawsonville GA 34.3572 -84.1136 EDEG1 Ogeechee River at Eden GA 32.1933 -81.4139 ELIG1 Coosawattee River near Ellijay GA 34.6747 -84.5086 ENGG1 Lookout Creek at New England GA 34.8975 -85.4631 FOGG1 Chattahoochee River at W.F. George L&D GA 31.6242 -85.0675 FRNG1 Chattahoochee River at Franklin GA 33.2792 -85.1000 GRFG1 Flint River near Griffin GA 33.2442 -84.4292 HAWG1 Ocmulgee River at Hawkinsville GA 32.2806 -83.4611 HDCG1 Chattahoochee River at Helen GA 34.7008 -83.7289 IRCG1 Spring Creek near Iron City GA 31.0397 -84.7383 JACG1 Ocmulgee River near Jackson GA 33.3075 -83.8383 LBRG1 Ocmulgee River at Lumber City GA 31.9183 -82.6739 LING1 Line Creek near Senoia GA 33.3194 -84.5236 LOVG1 Flint River near Lovejoy GA 33.4156 -84.3847 MACG1 Ocmulgee River at Macon GA 32.8386 -83.6206 MARG1 Sope Creek near Marietta GA 33.9539 -84.4433 MCKG1 Muckalee Creek near Leesburg GA 31.7761 -84.1394 MDVG1 Ogeechee River at Midville GA 32.8155 -82.2358 MLGG1 Oconee River at Milledgeville GA 33.0894 -83.2156 MNTG1 Flint River at Montezuma GA 32.2981 -84.0439 MOCG1 Middle Oconee River near Athens GA 33.9467 -83.4228 MTVG1 Oconee River near Mount Vernon GA 32.1817 -82.6436 MUCG1 Muckalee Creek near Americus GA 32.0831 -84.2581 MYRG1 Yellow River below Milstead near Conyers GA 33.6669 -83.9381 NCKG1 Nancy Creek at Buckhead GA 33.8692 -84.3789 NCRG1 Chattahoochee River near Norcross GA 33.9972 -84.2019 NEWG1 Flint River at Newton GA 31.3066 -84.3386 NOCG1 North Oconee River at Athens GA 33.9697 -83.3775 OCNG1 Oconee River below Oconee GA 32.7872 -82.9572 OKFG1 Flint River near Oakfield GA 31.7250 -84.0186 PCTG1 Proctor Creek at Atlanta GA 33.7756 -84.4408 PNFG1 Oconee River near Penfield GA 33.7206 -83.2958 PRSG1 Kinchafoonee Creek at Preston GA 32.0525 -84.5483 RDBG1 Coosawattee River near Redbud GA 34.5642 -84.8331 REDG1 Ohoopee River near Reidsville GA 32.0783 -82.1775 REYG1 Spring Creek near Reynoldsville GA 30.8706 -84.7617 RFDG1 Ogeechee River at Rocky Ford GA 32.6489 -81.8408 ROEG1 Etowah River near Rome GA 1 Loop GA 34.2322 -85.1169 RSCG1 Oostanaula River at Resaca GA 34.5783 -84.9414 RTMG1 Oostanaula River at Rome GA 34.2606 -85.1708 RWLG1 Chattahoochee River near Roswell GA 33.9858 -84.3161 STNG1 Alapaha River at Statenville GA 30.7039 -83.0333 SWEG1 Suwanee Creek near Suwanee GA 34.0328 -84.1036 TLNG1 Conasauga River near Tilton GA 34.6667 -84.9283 TMLG1 Ochlockonee River near Thomasville GA 30.8756 -84.0456 UPAG1 Upatoi Creek at Fort Benning GA 32.4133 -84.8200 VDSG1 Withlacoochee River near Valdosta GA 30.9500 -83.2667 VING1 Chattahoochee River at Vining/Atlanta GA 33.8592 -84.4544 WHTG1 Chattahoochee River at Whitesburg GA 33.4769 -84.9011 WTPG1 Chattahoochee River at West Point GA 32.8861 -85.1822 ALKH1 Alakahi Stream near Kamuela HI 20.0741 -155.6736 HLEH1 Hanalei River near Hanalei HI 22.1919 -159.4658 HLWH1 Halawa Stream near Halawa HI 21.0086 -156.7647 HPOH1 Honopou Stream near Huelo HI 20.8889 -156.2556 KMSH1 Kawainui Marsh near Levee - 15 HI 21.3981 -157.7519 KNAH1 Kahana Stream near Kahana HI 21.5436 -157.8853 KNIH1 Kawainui Marsh near Levee - 64 HI 21.4086 -157.7592 KSFH1 Kaukonahua Stream at East pump HI 21.4922 -157.9983 KWGH1 Kawela Gulch near Moku HI 21.0730 -156.9500 NLIH1 Honolii Stream near Papaikou HI 19.7667 -155.1544 OHGH1 Oheo Gulch at Dam HI 20.6713 -156.0547 WEBH1 NF Wailua River near Lihue HI 22.0719 -159.4181 WHRH1 Waihee River at Dam HI 20.9392 -156.5497 WIEH1 Waialae Stream near Waimea HI 22.0889 -159.5717 WNIH1 Wainiha River near Hanalei HI 22.1389 -159.5600 WRSH1 Wahiawa Reservoir at Spillway HI 21.4964 -158.0503 WSFH1 Wailua River near Lihue HI 22.0400 -159.3828 WWKH1 West Wailuaiki Stream near Hana HI 20.8211 -156.1436 AESI4 South Skunk River near Ames IA 41.9625 -93.5611 AGNI4 East Fk. Des Moines River near Algona IA 43.0789 -94.2361 AGSI4 Skunk River at Augusta IA 40.7667 -91.2833 AKRI4 Big Sioux River at Akron IA 42.8369 -96.5628 AKWI4 South River near Ackworth IA 41.3333 -93.4833 ALOI4 Cedar River at Cedar River in Waterloo IA 42.4950 -92.3342 ALTI4 Floyd River at Alton IA 42.9833 -96.0000 AMEI4 South Skunk River near Ames IA 42.0683 -93.6192 AMWI4 Squaw Creek at Ames IA 42.0225 -93.6292 ANSI4 Wapsipinicon River at Anamosa Shaw Rd IA 42.1000 -91.2833 ATCI4 East Fk. Nishnabotna River near Atlantic IA 41.3461 -95.0767 BDFI4 102 River near Bedford IA 40.6606 -94.7164 BLVI4 Mississippi River at Bellevue LD12 IA 42.2667 -90.4167 BRLI4 Mississippi River at Burlington IA 40.8167 -91.1000 BSSI4 Cedar Creek near Bussey IA 41.2192 -92.9106 CCYI4 Cedar River at Charles City IA 43.0625 -92.6730 CEDI4 Cedar River at Cedar Falls IA 42.5389 -92.4500 CFXI4 South Skunk River at Colfax IA 41.6819 -93.2464 CHKI4 Little Sioux River at Cherokee IA 42.7500 -95.5500 CHTI4 Chariton River near Chariton IA 40.9533 -93.2603 CIDI4 Cedar River at Cedar Rapids IA 41.9667 -91.6667 CJTI4 Iowa River at Columbus Jct IA 41.2792 -91.3456 CMMI4 Mississippi River at Camanche IA 41.7833 -90.2500 CNEI4 Cedar River near Conesville IA 41.4167 -91.2833 CRRI4 Little Sioux River at Correctionville IA 42.4667 -95.8000 DAKI4 East Fk. Des Moines River at Dakota City IA 42.7239 -94.1917 DBQI4 Mississippi River at Dubuque IA 42.5000 -90.6500 DCHI4 Upper Iowa River at Dorchester IA 43.4212 -91.5086 DEHI4 Upper Iowa River at Decorah IA 43.3053 -91.7967 DEMI4 Raccoon River at Des Moines Fleur Drive IA 41.5817 -93.6428 DESI4 Des Moines River at Southeast 6th IA 41.5786 -93.6050 DEWI4 Wapsipinicon River near DeWitt IA 41.7667 -90.5333 DLDI4 Mississippi River at Dubuque LD11 IA 42.5167 -90.6500 DMOI4 Des Moines River at 2nd Ave IA 41.6125 -93.6514 DMWI4 Raccoon River at Des Moines Highway 28 IA 41.5636 -93.7036 DRNI4 Little Maquoketa River near Durango IA 42.5500 -90.7500 DVSI4 Thompson River at Davis City IA 40.6403 -93.8081 EFWI4 North Fork Raccoon River near Jefferson IA 41.9881 -94.3767 EKDI4 Turkey River at Elkader IA 42.8433 -91.4011 EMTI4 West Fk. Des Moines River near Emmetsburg IA 43.1228 -94.7128 EOKI4 Mississippi River at Keokuk LD19 IA 40.4000 -91.3667 ESVI4 West Fk. Des Moines River at Estherville IA 43.3975 -94.8439 EWOI4 Little Sioux River at East/West Okoboji Lake Channel IA 43.3772 -95.1281 FNHI4 West Fk. Cedar River at Finchford IA 42.6306 -92.5400 FODI4 Des Moines River at Fort Dodge IA 42.5061 -94.2011 GRBI4 Turkey River at Garber IA 42.7400 -91.2619 GRMI4 Beaver Creek near Grimes IA 41.6833 -93.7333 GTTI4 Mississippi River at Guttenberg IA 42.7858 -91.0997 HAWI4 Big Sioux River at Hawarden IA 42.9975 -96.4981 HBTI4 West Fk. Des Moines River at Humboldt IA 42.7200 -94.2183 HMBI4 Nishnabotna River near Hamburg IA 40.6333 -95.6333 HNKI4 West Fork Nishnabotna River near Hancock IA 41.3833 -95.3667 HOKI4 Little Sioux River near Hornick IA 42.2269 -96.0778 ICLI4 Nodaway River near Clarinda IA 40.7333 -95.0167 IDNI4 Middle River near Indianola IA 41.4242 -93.5858 IDPI4 Wapsipinicon River at Independence IA 42.4667 -91.9000 IOWI4 Iowa River at Iowa City IA 41.6489 -91.5328 JANI4 Cedar River at Cedar River in Janesville IA 42.6483 -92.4650 JMEI4 Floyd River at James IA 42.5667 -96.3167 KALI4 English River near Kalona IA 41.4667 -91.7167 KEQI4 Des Moines River at Keosaqua IA 40.7333 -91.9667 LECI4 Mississippi River at LeClaire LD14 IA 41.5833 -90.4167 LGNI4 Boyer River at Logan IA 41.6500 -95.7833 LMRI4 Floyd River at Le Mars IA 42.8017 -96.1667 LNNI4 Little Sioux River at Linn Grove IA 42.8833 -95.2500 LNSI4 Mississippi River at Lansing IA 43.3603 -91.2131 LNTI4 Iowa River near Lone Tree IA 41.4167 -91.4667 MAPI4 Maple River at Mapleton IA 42.1500 -95.8000 MAQI4 Maquoketa River near Maquoketa IA 42.0833 -90.6333 MCGI4 Mississippi River at McGregor IA 43.0247 -91.1725 MCHI4 Maquoketa River at Manchester Hwy 20 IA 42.4700 -91.4483 MCWI4 Winnebago River at Winnebago River in Mason City IA 43.1500 -93.1925 MIFI4 Little Sioux River near Milford IA 43.3278 -95.2017 MIWI4 Iowa River at Marshalltown IA 42.0658 -92.9075 MOLI4 Chariton River near Moulton IA 40.7000 -92.7667 MRLI4 Floyd River at Merrill IA 42.7167 -96.2500 MROI4 Iowa River at Marengo IA 41.8167 -92.0667 MUSI4 Mississippi River at Muscatine IA 41.3833 -91.0500 NHRI4 Beaver Creek at New Hartford IA 42.5167 -92.6333 NRWI4 North River near Norwalk IA 41.4569 -93.6528 OBJI4 Milford Creek near Milford IA 43.3786 -95.1811 OOAI4 South Skunk River near Oskaloosa IA 41.3500 -92.6667 OTMI4 Des Moines River at Des Moines River in Ottumwa IA 41.0108 -92.4111 PCHI4 Perry Creek near Hinton IA 42.6344 -96.3964 PCMI4 Perry Creek near Millnerville IA 42.6936 -96.3700 PRMI4 Chariton River near Promise City IA 40.8167 -93.1922 PROI4 North Fork Raccoon River near Perry IA 41.8353 -94.1317 PSGI4 Soldier River at Pisgah IA 41.8333 -95.9333 RAPI4 Rock River at Rock Rapids IA 43.4186 -96.1633 RDOI4 East Fk. Nishnabotna River at Red Oak IA 41.0086 -95.2414 RDPI4 West Fork Nishnabotna River near Randolph IA 40.8731 -95.5800 REDI4 South Fork Raccoon River near Redfield IA 41.5894 -94.1511 RKVI4 Rock River at Rock Valley IA 43.2047 -96.3056 SHLI4 Floyd River at Sheldon IA 43.2000 -95.8500 SHRI4 Shell Rock River near Shell Rock IA 42.7119 -92.5828 SIGI4 Skunk River near Sigourney IA 41.3000 -92.2000 SIOI4 Perry Creek at Sioux City IA 42.5167 -96.4000 SLKI4 Spirit Lake near Orleans IA 43.4697 -95.1236 SPOI4 Ocheyedan River near Spencer IA 43.1289 -95.2103 SPWI4 Little Sioux River at Spencer IA 43.1333 -95.1333 STRI4 Des Moines River near Stratford IA 42.2500 -94.0000 STUI4 Floyd River near Struble IA 42.9236 -96.1761 SXCI4 Big Sioux River at Sioux City IA 42.5244 -96.4803 TRCI4 Des Moines River at Tracy IA 41.2814 -92.8594 TURI4 Little Sioux River near Turin IA 41.9667 -95.9833 VINI4 Cedar River at Vinton IA 42.1706 -92.0233 VNMI4 Raccoon River at Raccoon River in Van Meter IA 41.5339 -93.9497 WAPI4 Iowa River at Wapello IA 41.1667 -91.1833 WBCI4 Boone River near Webster City IA 42.4336 -93.8033 AFRI1 Snake River at American Falls ID 42.7792 -112.8792 AMFI1 Snake River near Neeley ID 42.7683 -112.8783 ANTI1 Henrys Fork River at St Anthony ID 43.9667 -111.6667 BBYI1 Blackfoot River near Blackfoot ID 43.1711 -112.3869 BCYI1 Falls River near Ashton ID 44.1858 -111.0053 BFEI1 Kootenai River at Bonners Ferry ID 48.7000 -116.3125 BFTI1 Snake River near Blackfoot ID 43.1419 -112.5183 BIGI1 Boise River at Boise ID 43.6603 -116.2781 BLFI1 Blackfoot River near Blackfoot ID 43.1306 -112.4764 BRFI1 South Fork Boise River at Pine ID 43.4944 -115.3056 BTSI1 South Fork Boise River at Twin Springs ID 43.6592 -115.7261 CAMI1 Weiser River at Cambridge ID 44.5797 -116.6389 CCCI1 Little Lost River at Camas ID 44.0028 -112.2200 CHEI1 Henrys Fork River near Chester ID 44.0167 -111.5667 CLDI1 St Joe River at Calder ID 47.2717 -116.1939 COEI1 Coeur d'Alene River at Coeur d'Alene ID 47.6653 -116.7703 CTLI1 Coeur d'Alene River at Cataldo ID 47.5500 -116.3167 DGGI1 Teton River near Driggs ID 43.7819 -111.2092 DRBI1 Deadwood River at Deadwood Reservoir ID 44.2917 -115.6425 DWRI1 Clearwater River at Dworshak Reservoir ID 46.5022 -116.3217 EASI1 Moyie River at Eastport ID 48.9994 -116.1786 EMMI1 Payette River at Emmett ID 43.9306 -116.4417 ENVI1 N Fk Coeur d'Alene River at Enaville ID 47.5689 -116.2533 FRAI1 Falls River at Ashton ID 44.0567 -111.3575 GOSI1 Goose Creek near Oakley ID 42.1250 -113.9389 HALI1 Big Wood River at Hailey ID 43.5172 -114.3217 HCDI1 Snake River at Hells Canyon ID 45.2514 -116.6972 HEII1 Snake River at Heise ID 43.6292 -111.6758 HENI1 Henrys Fork River near Macks Inn ID 44.5944 -111.3497 HFAI1 Henrys Fork River near Ashton ID 44.0667 -111.5167 HOPI1 Pend Oreille River at Hope ID 48.2763 -116.3463 HOPW1 Palouse River at Hooper ID 46.7667 -118.1500 HOTI1 Bruneau River at Hot Springs ID 42.7711 -115.7194 HRSI1 Payette River at Horseshoe Bend ID 43.9425 -116.1958 HWRI1 Big Lost River at Howell Ranch ID 43.9983 -114.0200 INEI1 Big Lost River near Arco ID 43.5139 -113.0833 ISLI1 Henrys Fork River near Island Park ID 44.4000 -111.3833 KRSI1 South Fork Salmon River at Krassel Ranger Station ID 44.9872 -115.7242 LERI1 Lemhi River near Lemhi ID 44.9400 -113.6378 LINI1 Big Lost River near Atomic City ID 43.5739 -112.9397 LORI1 Snake River at Lorenzo ID 43.7350 -111.8758 LWOI1 Little Wood River above High 5 Creek ID 43.4917 -114.0583 LWRI1 Little Wood River below Reservoir ID 43.4250 -114.0250 MAGI1 Big Wood River near Richfield ID 43.2514 -114.3708 MAKI1 Big Lost River below Mackay Reservoir ID 43.9389 -113.6472 MCCI1 Portneuf River at McCammon ID 42.6300 -112.2247 MFPI1 Middle Fork Payette River at Crouch ID 44.1139 -115.9722 MIDI1 Middle Fork Salmon River at Middle Fork Lodge ID 44.7217 -115.0164 MILI1 Snake River near Milner ID 42.5253 -114.0178 MINI1 Snake River near Minidoka ID 42.6731 -113.4994 MORI1 Boise River at Mores Creek ID 43.6500 -115.9833 NPLI1 East Fork Pine Creek above Nabob Creek near Pinehurst ID 47.4766 -116.2205 ORFI1 Clearwater River at Orofino ID 46.4786 -116.2564 PALI1 Snake River near Irwin ID 43.3508 -111.2183 PEKI1 Clearwater River near Peck ID 46.5003 -116.3925 PIHI1 Portneuf River at Pocatello ID 42.8742 -112.4689 PINI1 Pine Creek below Amy Gulch near Pinehurst ID 47.5144 -116.2419 PLDI1 Snake River at Palisades Res ID 43.3636 -111.2222 PLEI1 Payette River at Letha ID 43.8964 -116.6258 PLOI1 Palouse River near Potlatch ID 46.9153 -116.9500 PRCI1 North Fork Coeur d'Alene River near Prichard ID 47.7061 -115.9792 PRLI1 South Fork Payette River at Lowman ID 44.0853 -115.6211 PRPI1 Payette River at Payette ID 44.0425 -116.9242 PRTI1 Priest River near Priest River ID 48.2167 -116.9167 PSTI1 South Fork Coeur d'Alene River near Pinehurst ID 47.5517 -116.2369 PTYI1 Portneuf River at Tyee Lateral ID 42.9444 -112.5444 REXI1 Henrys Fork River near Rexburg ID 43.8261 -111.9042 RIGI1 Little Salmon River at Riggins ID 45.4131 -116.3247 RIRI1 Willow Creek near Ririe ID 43.5839 -111.7456 SELI1 Selway River near Lowell ID 46.0867 -115.5128 SHYI1 Snake River at Shelley ID 43.4131 -112.1339 SIFI1 Snake River near Idaho Falls ID 43.6056 -112.0578 SJMI1 St Joe River at St Maries ID 47.3131 -116.5597 SMNI1 Salmon River at Salmon ID 45.1833 -113.8944 SNAI1 Snake River at Blackfoot ID 43.1972 -112.3681 SPDI1 Clearwater River at Spalding ID 46.4486 -116.8264 SPSI1 Snake River near Spring Creek near Fort Hall ID 43.0500 -112.5500 STII1 South Fork Clearwater River at Stites ID 46.0867 -115.9756 SWAI1 Snake River at Swan Falls Reservoir ID 43.2919 -116.4200 TCOI1 Trapper Creek near Oakley ID 42.1694 -113.9722 TEAI1 Teton River near St. Anthony ID 43.9272 -111.6153 TOPI1 Portneuf River near Lava Hot Springs ID 42.6250 -112.0889 TTNI1 Teton River near Teton ID 43.9000 -111.6833 TTXI1 Teton River at Rexburg ID 43.8333 -111.7833 WEII1 Snake River at Weiser ID 44.2456 -116.9800 WHBI1 Salmon River at White Bird ID 45.7503 -116.3231 WODI1 Little Wood River near Carey ID 43.3389 -114.0000 WSRI1 Weiser River at Weiser ID 44.2675 -116.7711 WTXI1 Willow Creek near Ririe ID 43.4425 -111.7269 ALGI2 Fox River at Algonquin IL 42.1660 -88.2900 ALNI2 Mississippi River at Alton IL 38.8660 -90.1810 BEAI2 Illinois River at Beardstown IL 40.0170 -90.4330 BRKI2 Ohio River at Brookport Lock and Dam IL 37.1330 -88.6500 BVDI2 Kishwaukee River at Belvidere IL 42.2560 -88.8640 BYRI2 Rock River at Byron IL 42.1230 -89.2560 CARI2 Little Wabash River at Carmi IL 38.0920 -88.1560 CDLI2 Sangamon River near Chandlerville IL 40.0643 -90.1512 CHBI2 Iroquois River near Chebanse IL 41.0090 -87.8240 CIRI2 Ohio River at Cairo IL 37.0000 -89.1620 CLAI2 Little Wabash River near Clay City IL 38.6350 -88.2970 CLMI2 La Moine River near Colmar IL 40.3290 -90.8990 CMOI2 Rock River near Como IL 41.7828 -89.7497 CNGI2 Mackinaw River at Congerville IL 40.6240 -89.2420 CRLI2 Kaskaskia River at Carlyle Lake IL 38.6120 -89.3560 DAYI2 Fox River at Dayton IL 41.3840 -88.7900 DEKI2 Kishwaukee River at De Kalb IL 41.9310 -88.7600 DNVI2 Vermilion River near Danville IL 40.1010 -87.5980 DSPI2 Des Plaines River near Des Plaines IL 42.0820 -87.8900 FEEI2 Pecatonica River at Freeport IL 42.3040 -89.6160 FLTI2 Mississippi River at Fulton LD13 IL 41.8940 -90.1570 GCTI2 Ohio River at Grand Chain Lock and Dam IL 37.2040 -89.0420 GENI2 Green River near Geneseo IL 41.4890 -90.1580 GLDI2 Mississippi River at Gladstone LD18 IL 40.8850 -91.0220 GOLI2 Ohio River at Golconda IL 37.3580 -88.4830 GREI2 Salt Creek near Greenview IL 40.1340 -89.7360 GRFI2 Mississippi River at Grafton IL 38.9680 -90.4280 GUNI2 Des Plaines River near Gurnee IL 42.3440 -87.9380 HARI2 Illinois River at Hardin IL 39.1510 -90.5710 HAVI2 Illinois River at Havana IL 40.2790 -90.0910 HNYI2 Illinois River at Henry IL 41.1100 -89.3500 HUTI2 Wabash River at Hutsonville IL 39.1342 -87.6581 ILNI2 Mississippi River at Illinois City LD16 IL 41.4320 -91.0150 IRQI2 Iroquois River at Iroquois IL 40.8240 -87.5820 JOSI2 Rock River near Joslin IL 41.5590 -90.1860 KHBI2 Mississippi River at Keithsburg IL 41.1060 -90.9590 LATI2 Rock River at Latham Park IL 42.3690 -89.0580 LAWI2 Embarras River at Lawrenceville IL 38.7236 -87.6644 LNMI2 Spoon River at London Mills IL 40.7090 -90.2810 LNRI2 Vermilion River near Leonore IL 41.2080 -88.9310 LSLI2 Illinois River at La Salle IL 41.3170 -89.1000 MCRI2 Wabash River at Mount Carmel IL 38.4020 -87.7528 MLII2 Rock River at Moline IL 41.4620 -90.5000 MNTI2 Sangamon River at Monticello IL 40.0310 -88.5890 MOMI2 Kankakee River at Momence IL 41.1600 -87.6690 MORI2 Illinois River at Morris IL 41.3540 -88.4290 MROI2 Illinois River at Meredosia IL 39.8230 -90.5680 MURI2 Big Muddy River at Murphysboro IL 37.7330 -89.3670 NBOI2 Mississippi River at New Boston LD17 IL 41.1920 -91.0580 NLGI2 Illinois River at Lagrange IL 39.9400 -90.5340 OKFI2 Sangamon River near Oakford IL 40.1240 -89.9850 PETI2 Sangamon River at Petersburg IL 39.9870 -89.8640 PIAI2 Illinois River at Peoria IL 40.7040 -89.5660 PLMI2 Big Muddy River at Plumfield IL 37.9010 -89.0140 PNTI2 Vermilion River at Pontiac IL 40.8780 -88.6360 PRAI2 Illinois River at Peoria L&D IL 40.6330 -89.6250 PRYI2 Kishwaukee River near Perryville IL 42.1960 -88.9990 QLDI2 Mississippi River at Quincy Lock IL 39.8800 -91.4480 RABI2 Rock River at Rockford IL 42.2890 -89.0650 RCKI2 Mississippi River at Rock Island LD15 IL 41.5180 -90.5660 ROKI2 Rock River at Rockton IL 42.4490 -89.0700 RUSI2 Des Plaines River at Russell IL 42.4890 -87.9260 RVRI2 Des Plaines River at Riverside IL 41.8220 -87.8210 RVTI2 Sangamon River at Riverton IL 39.8430 -89.5480 SEVI2 Spoon River at Seville IL 40.4860 -90.3430 SHLI2 Little Calumet River at South Holland IL 41.6070 -87.5980 SHNI2 Ohio River at Shawneetown IL 37.7000 -88.1330 SIRI2 Pecatonica River near Shirland IL 42.4360 -89.1970 SLVI2 Kaskaskia River at Shelbyville IL 39.4070 -88.7810 SMLI2 Ohio River at Smithland Lock and Dam IL 37.1670 -88.4330 STMI2 Embarras River at Ste Marie IL 38.9340 -88.0240 THBI2 Mississippi River at Thebes IL 37.2170 -89.4640 THNI2 Thorn Creek at Thornton IL 41.5680 -87.6080 UINI2 Mississippi River at Quincy IL 39.9430 -91.4310 VALI2 Illinois River at Valley City IL 39.7030 -90.6450 VNDI2 Kaskaskia River at Vandalia IL 38.9690 -89.0890 WLMI2 Kankakee River near Wilmington IL 41.3470 -88.1860 WYNI2 Skillet Fork River at Wayne City IL 38.3570 -88.5830 ABTI3 East Fork Whitewater River at Abington IN 39.7325 -84.9597 ACTI3 Buck Creek at Acton IN 39.6569 -85.9575 ADNI3 White River at Raible Avenue in Anderson IN 40.1106 -85.7108 ALPI3 Whitewater River near Alpine IN 39.5736 -85.1583 AMTI3 Youngs Creek at Amity IN 39.4189 -86.0050 ANDI3 White River at Anderson IN 40.1062 -85.6722 BAKI3 East Fork White River at Columbus IN 39.2001 -85.9255 BEDI3 East Fork White River at Rivervale IN 38.7703 -86.4097 BFRI3 East Fork White River near Bedford IN 38.8361 -86.5211 BLFI3 Wabash River at Bluffton IN 40.7422 -85.1714 BOLI3 Eel River at Bowling Green IN 39.3828 -87.0206 BRDI3 White River at Broad Ripple IN 39.8714 -86.1378 BRKI3 Whitewater River at Brookville IN 39.4100 -85.0000 CAGI3 Mill Creek at Cagles Mill Lake IN 39.4872 -86.9172 CARI3 Big Blue River at Carthage IN 39.7439 -85.5758 CATI3 Mill Creek near Cataract IN 39.4333 -86.7633 CCAI3 Cicero Creek at Arcadia IN 40.1744 -86.0006 CCHI3 Clifty Creek at Hartsville IN 39.2736 -85.7028 CCII3 Crooked Creek at Indianapolis IN 39.8297 -86.2061 CENI3 White River at Eagle Valley Power Plant IN 39.4861 -86.4183 CHLI3 Big Raccoon Creek at Cecil M. Harden Lake IN 39.7172 -87.0722 CLFI3 Ohio River at Clifty Creek IN 38.7370 -85.4180 CLNI3 Wabash River at Clinton IN 39.6564 -87.3961 CNNI3 Ohio River at Cannelton Lock and Dam IN 37.8990 -86.7070 CNTI3 White River near Centerton IN 39.4975 -86.4005 COXI3 Big Raccoon Creek at Coxville IN 39.6525 -87.2936 CRWI3 Sugar Creek at Crawfordsville IN 40.0489 -86.8995 CVGI3 Wabash River at Covington IN 40.1400 -87.4067 DAVI3 Kankakee River at Davis Route 30 Bridge IN 41.4000 -86.7011 DBRI3 Kankakee River at Dunns Bridge IN 41.2210 -86.9640 DCDI3 Deer Creek near Delphi IN 40.5903 -86.6208 DCRI3 St. Marys at Decatur IN 40.8486 -84.9378 DEPI3 Muscatatuck River at Deputy IN 38.8040 -85.6730 DLPI3 Tippecanoe River near Delphi IN 40.5939 -86.7700 ECRI3 Eagle Creek at Eagle Creek Reservoir IN 39.8222 -86.3031 EDNI3 Sugar Creek (central) near Edniburgh IN 39.3606 -85.9986 EKMI3 St. Joseph River MI/IN at Elkhart IN 41.6917 -85.9750 ELLI3 White River at Elliston IN 39.0278 -86.9669 EVVI3 Ohio River at Evansville IN 37.9710 -87.5780 FCFI3 Fall Creek near Fortville IN 39.9542 -85.8681 FINI3 Big Raccoon Creek near Fincastle IN 39.8125 -86.9539 FLCI3 Flatrock River at North Columbus IN 39.2350 -85.9267 FRDI3 Blue River at Fredericksburg IN 38.4340 -86.1920 FREI3 White River at Edwardsport IN 38.8070 -87.2460 FTWI3 Maumee River at Fort Wayne IN 41.0828 -85.1147 GSHI3 Elkhart River at Goshen IN 41.5933 -85.8486 HAZI3 White River at Hazleton IN 38.4900 -87.5456 HDBI3 Salt Creek near Harrodsburg IN 39.0044 -86.5086 HUFI3 Wabash River at Terre Haute IN 39.4759 -87.4189 INDI3 White River at Raymond Street in Indianapolis IN 39.7372 -86.1689 INSI3 Eagle Creek at Speedway IN 39.7758 -86.2503 IUPI3 White River at Michigan Street in Indianapolis IN 39.7747 -86.1897 JRMI3 Wildcat Creek near Jerome IN 40.4414 -85.9189 KCKI3 Kokomo Creek near Kokomo IN 40.4411 -86.0889 KNXI3 Yellow River at Knox IN 41.3028 -86.6206 KTSI3 Kankakee River near Kouts IN 41.2540 -87.0340 LAFI3 Wabash River at Lafayette IN 40.4220 -86.8970 LBCI3 Little Buck Creek near Indianapolis IN 39.6667 -86.1967 LCII3 Lick Creek near Beech Grove IN 39.7058 -86.1036 LCMI3 Little Calumet River at Munster IN 41.5690 -87.5220 LGNI3 Wabash River at Logansport IN 40.7464 -86.3775 LRHI3 Little River at Huntington IN 40.9039 -85.4061 LYNI3 Wabash River at Linn Grove IN 40.6561 -85.0328 LYTI3 Wildcat Creek near Lafayette IN 40.4406 -86.8292 MANI3 Mill Creek at Cagle Mill IN 39.4878 -86.9250 MCXI3 Tippecanoe River at Oakdale Dam IN 40.6567 -86.7544 MIEI3 White River at Muncie IN 40.2042 -85.3872 MLRI3 Fall Creek at Millersville IN 39.8519 -86.0875 MOHI3 Leary-Weber Ditch at Mohawk IN 39.8425 -85.8250 MONI3 Salt Creek at Monroe Lake IN 39.0064 -86.5136 MOOI3 White Lick Creek at Mooresville IN 39.6078 -86.3822 MROI3 Mississinewa River at Marion IN 40.5761 -85.6594 MTVI3 Ohio River at Mount Vernon IN 37.9280 -87.8960 MTZI3 Wabash River at Montezuma IN 39.7925 -87.3739 NBGI3 Ohio River at Newburgh Lock and Dam IN 37.9260 -87.3750 NBLI3 White River at Noblesville IN 40.0470 -86.0172 NEBI3 Brush Creek near Nebraska IN 39.0703 -85.4861 NHRI3 Wabash River at New Harmony IN 38.1320 -87.9400 NMCI3 Eel River at North Manchester IN 40.9939 -85.7814 NMSI3 Cicero Creek at Morse Reservoir IN 40.0730 -86.0467 NORI3 White River at 82nd Street Bridge near Nora IN 39.9106 -86.1055 NPLI3 Sugar Creek (central) at New Palestine IN 39.7142 -85.8856 NVLI3 St. Joseph River OH/IN at Newville IN 41.3856 -84.8017 NWBI3 White River at Newberry IN 38.9275 -87.0114 NWYI3 Tippecanoe River below Norway Dam IN 40.7803 -86.7600 OKKI3 Wildcat Creek at Kokomo IN 40.4708 -86.1531 ORAI3 Tippecanoe River near Ora IN 41.1572 -86.5636 OWCI3 Wildcat Creek at Owasco IN 40.4639 -86.6375 PCBI3 Plum Creek at Groveland IN 39.7617 -86.7294 PCLI3 Prairie Creek near Lebanon IN 40.1044 -86.5256 PETI3 White River above Petersburg IN 38.5283 -87.2533 PNTI3 Patoka River at Princeton IN 38.3900 -87.5490 PRII3 Pleasant Run at Arlington Avenue in Indianapolis IN 39.7758 -86.0639 PRLI3 Patoka River at Patoka Lake IN 38.4417 -86.7169 PTRI3 White River at Petersburg IN 38.5109 -87.2895 PYMI3 Yellow River at Plymouth IN 41.3403 -86.3044 RCHI3 Big Walnut Creek near Roachdale IN 39.8161 -86.7533 RGVI3 Mississinewa River near Ridgeville IN 40.2800 -84.9925 RLVI3 Big Walnut Creek near Reelsville IN 39.5364 -86.9764 ROOI3 St. Joseph River OH/IN near St. Joe (Ft. Wayne) IN 41.1781 -85.0552 RRPI3 White River at Rocky Ripple IN 39.8508 -86.1772 RVNI3 White River at Ravenswood IN 39.8783 -86.1253 RVTI3 Wabash River at Riverton IN 39.0203 -87.5686 SASI3 St. Marys at Muldoon Br. IN 40.9878 -85.1119 SBNI3 St. Joseph River MI/IN at South Bend IN 41.7202 -86.2692 SBVI3 Big Blue River at Shelbyville IN 39.5292 -85.7819 SCNI3 Stony Creek near Noblesville IN 40.0289 -85.9956 SERI3 East Fork White River near Seymour IN 38.9826 -85.8991 SFWI3 South Fork Wildcat Creek near Lafayette IN 40.4178 -86.7681 SHLI3 East Fork White River at Shoals IN 38.6670 -86.7919 SLBI3 Kankakee River at Shelby IN 41.1830 -87.3430 SPEI3 Little Eagle Creek at Speedway IN 39.7875 -86.2281 SPNI3 White River at Spencer IN 39.2812 -86.7622 STPI3 Flatrock River at St. Paul IN 39.4175 -85.6342 STTI3 White River at Stout Power Plant IN 39.7144 -86.2006 TELI3 Ohio River at Tell City IN 37.9530 -86.7750 UNWK2 Ohio River at J.T. Meyers Lock and Dam IN 37.7920 -87.9650 VCNI3 Wabash River at Vincennes IN 38.6817 -87.5353 VINI3 Wabash River at Red Skelton Bridge IN 38.7053 -87.5206 VRNI3 Muscatatuck River near Vernon IN 38.9761 -85.6203 WABI3 Wabash River at Wabash IN 40.7902 -85.8202 WHLI3 Muscatatuck River at Wheeler Hollow IN 38.7681 -86.1522 WLLI3 East Fork White River at Williams IN 38.8022 -86.6456 WMCI3 Tippecanoe River at Winamac IN 41.0497 -86.5992 WNMI3 Tippecanoe River at Winamac IN 41.0572 -86.5931 WRNI3 Salamonie River at Warren IN 40.7167 -85.4167 ZONI3 Eagle Creek at Zionsville IN 39.9464 -86.2603 ABIK1 Smoky Hill River near Abilene KS 38.9060 -97.2860 ADAK1 Salt Creek (ADAK1) near Ada KS 39.1420 -97.8360 AERK1 Walnut Creek near Alexander KS 38.4650 -99.6220 AGAK1 Walnut River at Augusta KS 37.6706 -96.9500 AGSK1 Whitewater River at Augusta KS 37.6800 -96.9961 ALBK1 Walnut Creek at Albert KS 38.4610 -99.0140 ALEK1 Mud Creek at Abilene KS 38.9300 -97.2280 ALMK1 Little Arkansas River at Alta Mills KS 38.1120 -97.5920 AMCK1 Neosho River near Americus KS 38.4670 -96.2500 ARCK1 Arkansas River at Arkansas City KS 37.0563 -97.0589 ARKK1 Walnut River at Arkansas City KS 37.0583 -97.0100 ARNK1 Smoky Hill River near Arnold KS 38.8090 -100.0200 ATCK1 Missouri River at Atchison KS 39.5600 -95.1140 ATOK1 Verdigris River at Altoona KS 37.4900 -95.6800 BARK1 Little Blue River near Barnes KS 39.7760 -96.8580 BBCK1 Bluff Creek near Protection KS 37.0300 -99.4694 BETK1 Buckner Creek near Burdett KS 38.1630 -99.6420 BLPK1 Ninnescah River near Belle Plaine KS 37.3740 -97.3390 BLRK1 Big Blue River at Blue Rapids KS 39.6890 -96.6680 BLTK1 Solomon River at Beloit KS 39.4530 -98.1140 BRLK1 Neosho River at Burlington KS 38.1940 -95.7360 BRNK1 Salt Creek at Barnard KS 39.1900 -98.1510 BTTK1 Pawnee River near Burdett KS 38.2070 -99.6430 BUNK1 Smoky Hill River near Bunker Hill KS 38.7930 -98.7810 BURK1 White Rock Creek near Burr Oak KS 39.8990 -98.2510 BVUK1 Kansas River near Belvue KS 39.1880 -96.1470 CBNK1 Chikaskia River near Corbin KS 37.1290 -97.6010 CDBK1 Beaver Creek at Cedar Bluffs KS 39.9863 -100.5600 CFVK1 Verdigris River at Coffeyville KS 37.0610 -95.6360 CHPK1 Chapman Creek near Chapman KS 39.0310 -97.0400 CLDK1 Elk creek at Clyde KS 39.5910 -97.3910 CNKK1 Republican River at Concordia KS 39.5900 -97.6590 CNUK1 Neosho River near Chanute KS 37.7300 -95.4410 COOK1 Arkansas River at Coolidge KS 38.0280 -102.0110 COWK1 Cowskin Creek at Wichita 119th St KS 37.7014 -97.4802 CTWK1 Cottonwood River at Cottonwood Falls KS 38.3650 -96.5460 CYCK1 Republican River at Clay Center KS 39.3920 -97.1250 DDCK1 Arkansas River at Dodge City KS 37.7450 -100.0320 DELK1 Soldier Creek near Delia KS 39.2383 -95.8880 DMRK1 S F Solomon River near Damar KS 39.3740 -99.5820 DRBK1 Arkansas River at Derby KS 37.5427 -97.2753 DSOK1 Kansas River at De Soto KS 38.9830 -94.9640 EDEK1 Walnut River near El Dorado KS 37.8169 -96.8392 EDWK1 Walnut River at El Dorado KS 37.8266 -96.8491 ELLK1 Big Creek at Ellis KS 38.9370 -99.5640 ELWK1 Smoky Hill River at Ellsworth KS 38.7300 -98.2240 EMPK1 Cottonwood River at Emporia KS 38.3820 -96.1810 ENTK1 Smoky Hill River at Enterprise KS 38.9070 -97.1200 ENWK1 Crooked Creek near Englewood KS 37.0320 -100.2080 EPRK1 Neosho River at Emporia KS 38.4310 -96.2090 EREK1 Neosho River near Erie KS 37.5490 -95.2630 ESTK1 Stranger Creek at Easton KS 39.3620 -95.1080 FKFK1 Black Vermillion River at Frankfort KS 39.6840 -96.4380 FLRK1 Cottonwood River near Florence KS 38.2360 -96.8770 FRGO2 Cimarron River near Forgan KS 37.0110 -100.4910 FRNK1 Fall River at Fredonia KS 37.5190 -95.8250 FSKK1 Marmaton River at Fort Scott KS 37.8630 -94.6770 FTNK1 Little Osage River at Fulton KS 38.0190 -94.7130 FTRK1 Kansas River at Ft. Riley KS 39.0530 -96.7760 GCKK1 Arkansas River at Garden City KS 37.9560 -100.8770 GDEK1 N F Solomon River at Glade KS 39.6780 -99.3080 GLAK1 Solomon River near Glasco KS 39.3740 -97.8360 GLNK1 Solomon River at GLEN ELDER RES KS KS 39.4961 -98.3133 GOVK1 Hackberry Creek at Gove KS 38.9541 -100.4847 GTBK1 Arkansas River at Great Bend KS 38.3530 -98.7640 GYSK1 Gypsum Creek near Gypsum KS 38.6530 -97.4190 HAVK1 Arkansas River near Haven KS 37.9460 -97.7750 HBGK1 Little Blue River near Hollenberg KS 39.9800 -97.0040 HCHK1 Arkansas River at Hutchinson KS 38.0390 -97.9330 HTDK1 Little Arkansas River near Halstead KS 38.0290 -97.5400 HYSK1 Big Creek near Hays KS 38.8520 -99.3180 IDPK1 Verdigris River at Independence KS 37.2230 -95.6770 IOLK1 Neosho River at Iola KS 37.8910 -95.4310 JMSK1 Buffalo Creek at Jamestown KS 39.6170 -97.8560 JUCK1 Smoky Hill River near Junction City KS 38.9800 -96.8580 KCKK1 Kansas River at "23rd Street, Kansas City, KS" KS 39.0900 -94.6090 KIOK1 Medicine Lodge River near Kiowa KS 37.0380 -98.4680 KNSK1 Arkansas River at Kinsley KS 37.9260 -99.3750 KRWK1 N F Solomon River at Kirwin Reservoir KS 39.6636 -99.1247 LAWK1 Wakarusa River near Lawrence KS 38.9111 -95.2603 LCGK1 Marais Des Cygnes River at La Cygne KS 38.3450 -94.7720 LCPK1 Kansas River at Lecompton KS 39.0520 -95.3880 LDLK1 Beaver Creek at Ludell KS 39.8486 -100.9583 LEVK1 Missouri River at Leavenworth KS 39.3270 -94.9090 LINK1 Saline River at Lincoln KS 39.0290 -98.1240 LISK1 Rock Creek at Louisville KS 39.2492 -96.3150 LNDK1 Salt Creek (LNDK1) at Lyndon KS 38.6090 -95.6380 LNEK1 Pottawatomie Creek at Lane KS 38.4440 -95.0840 LNRK1 Solomon River at Lenora KS 39.6152 -100.0016 LNSK1 Smoky Hill River at Lindsborg KS 38.5660 -97.6730 LOUK1 Vermillion Creek near Louisville KS 39.2910 -96.2310 LOVK1 White Rock Creek at Lovewell Reservoir KS KS 39.8844 -98.0280 LRYK1 Neosho River at Le Roy KS 38.0800 -95.6360 LWRK1 Kansas River at Lawrence KS 38.9740 -95.2350 LYNK1 Cow Creek at Lyons KS 38.3080 -98.1920 MACK1 Rattlesnake Creek near Macksville KS 37.8720 -98.8750 MDKK1 Ninnescah River near Murdock KS 37.5640 -97.8530 MHKK1 Kansas River at Manhattan KS 39.1810 -96.5530 MPSK1 Solomon River at Minneapolis KS 39.1220 -97.7110 MRYK1 Big Blue River at Marysville KS 39.8420 -96.6610 MSCK1 Delaware River near Muscotah KS 39.5210 -95.5330 MTRK1 Smoky Hill River near Mentor KS 38.7110 -97.5710 MULK1 Arkansas River near Mulvane KS 37.4760 -97.2610 NCMK1 Smoky Hill River near New Cambria KS 38.8640 -97.4830 NCRK1 Sappa Creek near Norcatur KS 40.0013 -99.9916 NEOK1 Neosho River at Neosho Rapids KS 38.3680 -95.9950 NLSK1 Solomon River at Niles KS 38.9690 -97.4760 OBNK1 Sappa Creek near Oberlin KS 39.7852 -100.5744 OKYK1 Smoky Hill River near Oakley KS 38.7961 -100.8569 OPDK1 Indian Creek at Overland Park KS 38.9410 -94.6710 OSBK1 S F Solomon River near Osborne KS 39.4500 -98.7000 OSMK1 Marais Des Cygnes River at Osawatomie KS 38.5040 -94.9600 OSWK1 Neosho River at Oswego KS 37.1770 -95.1050 OTWK1 Marais Des Cygnes River at Ottawa KS 38.6180 -95.2680 OXFK1 Arkansas River at Oxford KS 37.2780 -97.1620 PECK1 Ninnescah River near Peck KS 37.4594 -97.4222 PFRK1 Smoky Hill River near Pfeifer KS 38.7142 -99.1528 PLYK1 Cottonwood River near Plymouth KS 38.3970 -96.3560 PPFK1 Neosho River near Parsons KS 37.3400 -95.1090 PTIK1 N F Solomon River at Portis KS 39.5540 -98.6920 PXCK1 Mill Creek (PXCK1) at Paxico KS 39.0630 -96.1500 QNMK1 Marais Des Cygnes River near Quenemo KS 38.5470 -95.5270 RCNK1 Walnut Creek at Nekoma KS 38.4770 -99.4370 RDNK1 Marais Des Cygnes River near Reading KS 38.5670 -95.9640 RDPK1 Fancy Creek at Randolph KS 39.4720 -96.8320 RSSK1 Cross Creek at Rossville KS 39.1350 -95.9590 RUSK1 Saline River near Russell KS 38.9660 -98.8530 SANK1 Pawnee River near Sanford KS 38.1890 -99.3310 SCNK1 Smoky Hill River above Schoenchen KS 38.7110 -99.3810 SCSK1 Smoky Hill River below Schoenchen KS 38.7128 -99.2925 SEDK1 Little Arkansas River near Sedgwick KS 37.8830 -97.4240 SIPK1 Pottawatomie Creek near Scipio KS 38.3492 -95.2030 SKTK1 Bow Creek near Stockton KS 39.5630 -99.2840 SLNK1 Mulberry Creek near Salina KS 38.8440 -97.6680 SNCK1 Turkey Creek near Seneca KS 39.9480 -96.1080 SNDK1 Republican River at Scandia KS 39.7970 -97.7940 STAK1 Blue River near Stanley KS 38.8130 -94.6750 STCK1 S F Solomon River near Webster KS 39.3941 -99.4258 SYRK1 Arkansas River at Syracuse KS 37.9660 -101.7560 TNGK1 Stranger Creek near Tonganoxie KS 39.1160 -95.0110 TNRK1 Kansas River at Turner Bridge KS 39.0930 -94.7100 TOPK1 Soldier Creek near Topeka KS 39.1000 -95.7240 TOWK1 Whitewater River near Towanda KS 37.7960 -97.0130 TPAK1 Kansas River at Topeka KS 39.0670 -95.6160 TPOK1 Marais Des Cygnes River near Trading Post KS 38.2220 -94.6680 TSCK1 Saline River at Tescott KS 39.0040 -97.8740 TSHK1 Shunganunga Creek at Topeka KS 39.0300 -95.6850 TURK1 Turkey Creek at Southwest Boulevard KS 39.0590 -94.6260 WAAK1 Saline River near Wakeeney KS 39.1080 -99.8690 WDBK1 Lyon Creek near Woodbine KS 38.8850 -96.9100 WDRK1 Prairie Dog Creek near Woodruff KS 39.9860 -99.4780 WFDK1 Walnut River at Winfield KS 37.2242 -96.9944 WMGK1 Kansas River at Wamego KS 39.1980 -96.3040 WODK1 S F Solomon River near Woodston KS 39.4400 -99.1010 WSHK1 Mill Creek (WSHK1) at Washington KS 39.8140 -97.0390 ZENK1 Rattlesnake Creek near Zenith KS 38.0940 -98.5460 ASHK2 Ohio River at Ashland KY 38.4811 -82.6367 BBVK2 Cumberland River at Barbourville KY 36.8628 -83.8875 BLSK2 Licking River at Blue Licks Spring KY 38.4220 -83.9990 BOOK2 South Fork at Booneville KY 37.4800 -83.6753 BRNK2 Green River at Brownsville KY 37.2060 -86.2620 BRRK2 Barren River at Barren River Lake KY 36.8950 -86.1339 BSNK2 Rolling Fork near Boston KY 37.7670 -85.7040 BWGK2 Barren River at Bowling Green KY 36.9980 -86.4280 BXTK2 Cumberland River at Baxter KY 36.8606 -83.3269 CALK2 Green River at Calhoun Lock and Dam KY 37.5340 -87.2640 CMBK2 Cumberland River at Cumberland KY 36.9739 -82.9939 CYCK2 Red River at Clay City KY 37.8647 -83.9336 CYNK2 South Fork Licking River at Cynthiana KY 38.3770 -84.3030 DIXK2 Dix River at Lake Herrington KY 37.8000 -84.7167 DUNK2 Rough River at Dundee KY 37.5500 -86.7170 ELKK2 Big Sandy River at Elkhorn City KY 37.3039 -82.3430 FFTK2 Kentucky River at Frankfort Lock KY 38.2330 -84.8670 FLMK2 Licking River (KY) at Falmouth KY 38.6800 -84.3200 FLRK2 Big Sandy River at Fullers Station KY 38.1722 -82.6389 FODK2 Kentucky River at Ford Lock KY 37.8950 -84.2620 GNUK2 Ohio River at Lloyd Greenup Lock KY 38.6467 -82.8606 GRLK2 Green River at Green River Lake KY 37.2403 -85.3472 GYNK2 Little Sandy River at Grayson KY 38.3333 -82.9333 HAZK2 North Fork at Hazard KY 37.2470 -83.1820 HIBK2 Kentucky River at High Bridge Lock KY 37.8290 -84.7240 HLDK2 Kentucky River at Heidelberg KY 37.5500 -83.7670 JKNK2 North Fork at Jackson KY 37.5456 -83.3700 MFVK2 Green River at Munfordville KY 37.2680 -85.8860 MKBK2 Licking River (KY) at McKinneysburg KY 38.6000 -84.2697 MKLK2 Ohio River at Markland Tailwater KY 38.7667 -84.9667 MLPK2 Ohio River at McAlpine Lock and Dam KY 38.2780 -85.7940 MLUK2 Ohio River at McAlpine Upper KY 38.2830 -85.8000 MRHK2 Triplett Creek at Licking River in Morehead KY 38.1844 -83.4300 MYSK2 Ohio River at Maysville KY 38.6347 -83.7031 NOLK2 Nolin River at Nolin River Lake KY 37.2792 -86.2492 ODAK2 South Fork at Oneida KY 37.2683 -83.6514 OWBK2 Ohio River at Owensboro KY 37.8000 -87.0670 PAHK2 Ohio River at Paducah KY 37.0890 -88.5940 PKYK2 Big Sandy River at Pikeville KY 37.4642 -82.5264 PRDK2 Green River at Paradise KY 37.2650 -86.9790 PRSK2 Stoner Creek at Paris KY 38.2050 -84.2390 PSTK2 Big Sandy River at Prestonsburg KY 37.6708 -82.7772 PTVK2 Big Sandy River at Paintsville KY 37.8172 -82.7911 PVLK2 Cumberland River at Pineville KY 36.7639 -83.6928 RAVK2 Kentucky River near Ravenna KY 37.6783 -83.9483 RCHK2 Green River at Rochester KY 37.2160 -86.8940 RRLK2 Rough River at Rough River Lake KY 37.6178 -86.5044 SAYK2 Licking River near Salyersville KY 37.7305 -83.0580 SHPK2 Salt River at Shepherdsville KY 38.0540 -85.6250 TVLK2 Salt River at Taylorsville Lake KY 38.0144 -85.3714 WDBK2 Green River at Woodbury KY 37.1840 -86.6350 WHTK2 North Fork at Whitesburg KY 37.1175 -82.8247 WLBK2 Cumberland River at Williamsburg KY 36.7436 -84.1561 AEXL1 Red River at Alexandria LA 31.3128 -92.4428 ALGL1 Boeuf River at Alto LA 32.3740 -91.8810 AMIL1 Tangipahoa River near Amite LA 30.7290 -90.4840 BLRL1 Atchafalaya River above Butte LaRose LA 30.2810 -91.6870 BNTL1 Cypress Bayou Lake near Benton LA 32.6519 -93.6697 BSHL1 Bogue Chitto River near Bush LA 30.6290 -89.8970 BSLL1 Bayou Nezpique at Basile LA 30.4806 -92.6319 BSRL1 Atchafalaya River at Bayou Sorrel Lock LA 30.1300 -91.3230 BTRL1 Mississippi River at Baton Rouge LA 30.4290 -91.2070 BXAL1 Pearl River near Bogalusa LA 30.7980 -89.8210 BYML1 Amite River at Bayou Manchac LA 30.3470 -90.8950 CGSL1 Bogue Falaya River near Camp Covington LA 30.5570 -90.1460 CLRL1 Bogue Falaya River at Lee Road LA 30.4990 -90.0840 COLL1 Ouachita River at Columbia Lock and Dam LA 32.1667 -92.1125 CSHL1 Red River at Coushatta LA 32.0128 -93.3531 CUSL1 Tchefuncte River near Covington LA 30.4940 -90.1690 CVEL1 Bogue Falaya River at Boston Street LA 30.4760 -90.0890 DARL1 Amite River near Darlington LA 30.8890 -90.8440 DENL1 Amite River at Denham Springs LA 30.4640 -90.9900 DONL1 Mississippi River at Donaldsonville LA 30.1030 -90.9590 FLSL1 Tchefuncte River near Folsom LA 30.6160 -90.2490 FRNL1 Bogue Chitto River at Franklinton LA 30.8430 -90.1620 GLML1 Calcasieu River near Glenmora LA 30.9958 -92.6736 GNDL1 Atchafalaya River at Myette Point/Grand Lake LA 29.8930 -91.4460 GREL1 Red River at Grand Ecore LA 31.8183 -93.0842 HOLL1 Tickfaw River at Holden LA 30.5040 -90.6770 KDRL1 Calcasieu River near Kinder LA 30.5025 -92.9154 KENL1 Tangipahoa River near Kentwood LA 30.9380 -90.4900 KRZL1 Atchafalaya River at Krotz Springs LA 30.5350 -91.7470 LBBL1 Bayou Bodcau at Bayou Bodcau Lake LA 32.7036 -93.5119 LBUL1 Bayou Dorcheat at Lake Bistineau LA 32.3294 -93.4361 LCHL1 Calcasieu River at Saltwater Barrier LA 30.2533 -93.2183 LCOL1 Big Cypress Creek at Mooringsport LA 32.7050 -93.9608 LCRL1 Calcasieu River at Sam Houston Jones State Park LA 30.2894 -93.2708 LPOL1 Tickfaw River at Liverpool LA 30.9310 -90.6730 LPTL1 Sabine River at Logansport LA 31.9722 -94.0061 MCGL1 Atchafalaya River at Morgan City LA 29.6940 -91.2110 MLUL1 Ouachita River at Monroe LA 32.5053 -92.1256 MLVL1 Atchafalaya River at Melville LA 30.6910 -91.7360 MNEL1 Bayou Dorcheat at Dixie Inn LA 32.5986 -93.3331 MRML1 Mermentau River at Mermentau LA 30.1897 -92.5903 MTTL1 Whisky Chitto Creek near Mittie LA 30.6986 -92.8931 NORL1 Mississippi River at New Orleans LA 29.9350 -90.1360 OBCL1 Calcasieu River near Oberlin LA 30.6403 -92.8139 OKDL1 Calcasieu River near Oakdale LA 30.8220 -92.6850 OLVL1 Comite River near Olive Branch LA 30.7560 -91.0440 OTBL1 Calcasieu River near Old Town Bay LA 30.2922 -93.1422 PERL1 Pearl River near Pearl River LA 30.3850 -89.7370 PVLL1 Amite River at Port Vincent LA 30.3330 -90.8520 RHLL1 Little River near Rochelle LA 31.7542 -92.3444 ROBL1 Tangipahoa River at Robert LA 30.5060 -90.3620 RPIL1 Bayou Anacoco near Rosepine LA 30.9528 -93.3528 RRLL1 Mississippi River at Red River Landing LA 30.9610 -91.6640 RRVL1 Mississippi River at Reserve LA 30.0830 -90.5830 SLGL1 Red Chute Bayou at Sligo LA 32.4472 -93.5944 SMML1 Atchafalaya River at Simmesport LA 30.9830 -91.7980 SPHL1 Bayou Dorcheat near Springhill LA 32.9944 -93.3964 SVPL1 Red River at Shreveport LA 32.5153 -93.7403 VLSL1 Vermilion River at "Lafayette,Surrey Street" LA 30.2172 -91.9928 WAGL1 Wallace Lake near Keithville 9E LA 32.3167 -93.6667 BHBM3 Boston Harbor at Boston MA 42.3550 -71.0500 BZBM3 Buzzards Bay at Woods Hole MA 41.5178 -70.6675 CTVM3 Housatonic River at E Br at Coltsville MA 42.4700 -73.1800 DNSM3 Nashua River at East Pepperell MA 42.6675 -71.5756 DOVM3 Charles River at Dover MA 42.2561 -71.2606 FBGM3 North Nashua River at Fitchburg MA 42.5761 -71.7886 GTBM3 Housatonic River at Great Barrington MA 42.2319 -73.3552 HAVM3 Merrimack River at Haverhill MA 42.7667 -71.0608 HLYM3 Connecticut River at Holyoke MA 42.2139 -72.5956 HVRM3 Merrimack River above RT 125 at Haverhill MA 42.7719 -71.0829 INDM3 Chicopee River at Indian Orchard MA 42.1700 -72.5197 LCNM3 Concord River at Lowell MA 42.6460 -71.2990 LOWM3 Merrimack River at Lowell MA 42.6458 -71.2989 LWMM3 Merrimack River at Lawrence MA 42.7056 -71.1528 MAYM3 Assabet River at Maynard MA 42.4319 -71.4503 MNTM3 Connecticut River at Montague MA 42.6500 -72.6200 MTHM3 Spicket River at Methuen MA 42.7431 -71.2089 NBRM3 Blackstone River at Northbridge MA 42.1536 -71.6525 NBSM3 West Branch Farmington River at New Boston MA 42.0792 -73.0733 NHMM3 Connecticut River at Northampton MA 42.3000 -72.6167 NORM3 Wading River at Norton MA 41.9475 -71.1772 NRWM3 Neponset River at Norwood MA 42.1400 -71.1200 SAXM3 Sudbury River at Saxonville MA 42.3252 -71.3981 SPGM3 Connecticut River at Springfield MA 42.0986 -72.5958 WGTM3 Squannacook River at West Groton MA 42.6341 -71.6583 WILM3 Hoosic River near Williamstown MA 42.7000 -73.1594 WLMM3 Shawsheen River at Wilmington MA 42.5680 -71.2153 WSFM3 Westfield River at Westfield MA 42.1063 -72.6997 BRKM2 Potomac River near Washington DC (Little Falls) MD 38.9494 -77.1278 CBEM2 North Branch Potomac River at Cumberland MD 39.6218 -78.7734 CNWM2 Susquehanna River at Conowingo Dam MD 39.6586 -76.1744 CWCM2 Wills Creek near Cumberland MD 39.6696 -78.7880 DAWM2 Seneca Creek at Dawsonville MD 39.1281 -77.3358 FAVM2 Conococheague Creek at Fairview MD 39.7164 -77.8248 FDKM2 Monocacy River near Frederick MD 39.4526 -77.3708 HNKM2 Potomac River at Hancock MD 39.6976 -78.1779 KITM2 North Branch Potomac River at Kitzmiller MD 39.3939 -79.1817 LUKM2 North Branch Potomac River at Luke MD 39.4792 -79.0653 PAWW2 Potomac River at Paw Paw MD 39.5389 -78.4567 PORM2 Potomac River at Point of Rocks MD 39.2736 -77.5431 SACM2 Antietam Creek near Sharpsburg MD 39.4498 -77.7302 SRDM2 Savage River at Savage River Dam MD 39.5800 -79.1338 SRVM2 Savage River near Bloomington MD 39.5072 -79.1339 WLLM2 Potomac River at Williamsport MD 39.6083 -77.8333 ALLM1 Allagash River above Allagash ME 47.0706 -69.0808 AUBM1 Androscoggin River at Auburn ME 44.0700 -70.2200 AUGM1 Kennebec River at Augusta ME 44.3186 -69.7717 BBRM1 Big Black River near Depot Mountain ME 46.8939 -69.7522 BLAM1 Piscataquis River at Blanchard ME 45.2672 -69.5836 BNGM1 Kennebec River at Bingham ME 45.0700 -69.9070 DICM1 St. John River at Dickey ME 47.1122 -69.0903 DOVM1 Piscataquis River at Dover-Foxcroft ME 45.1752 -69.3153 EDDM1 Penobscot River at Eddington ME 44.8250 -68.6970 FIHM1 Fish River at Fort Kent ME 47.2372 -68.5900 FTKM1 St. John River at Fort Kent ME 47.2597 -68.6000 GRNM1 East Branch of the Penobscot River at Grindstone ME 45.7303 -68.5894 MASM1 Aroostook River at Masardis ME 46.5225 -68.3731 MATM1 Mattawamkeag River at Mattawamkeag ME 45.5000 -68.3000 MERM1 Sandy River at Mercer ME 44.7081 -69.9375 NANM1 Carrabassett River at North Anson ME 44.8692 -69.9550 NINM1 St. John River at Nine Mile Bridge ME 46.7000 -69.7164 PITM1 Sebasticook River at Pittsfield ME 44.7167 -69.4139 RMFM1 Androscoggin River at Rumford ME 44.5500 -70.5500 ROXM1 Swift River at Roxbury ME 44.6428 -70.5889 SIDM1 Kennebec River at North Sidney ME 44.4722 -69.6839 SKOM1 Kennebec River at Skowhegan ME 44.7636 -69.7197 WBKM1 Presumpscot River at Westbrook ME 43.6869 -70.3469 WBXM1 Saco River at West Buxton ME 43.6878 -70.6128 WENM1 Penobscot River at West Enfield ME 45.2300 -68.6500 WSHM1 Aroostook River at Washburn ME 46.7700 -68.1700 ADAM4 Grand River at Ada MI 42.9553 -85.4764 ADRM4 River Raisin near Adrian MI 41.9040 -83.9810 ALLM4 Kalamazoo River at Allegan MI 42.4823 -85.7984 ALMM4 Pine River at Alma MI 43.3794 -84.6556 ALSM4 Sturgeon River near Alston MI 46.7260 -88.6620 ANNM4 Huron River at Ann Arbor MI 42.2860 -83.7330 AUTM4 Au Train River near Au Train MI 46.4125 -86.8417 BCRM4 Battle Creek River at Battle Creek MI 42.3320 -85.1542 BESM4 Black River at Bessemer MI 46.5110 -90.0740 BEVM4 South Branch Tobacco River near Beaverton MI 43.8670 -84.5460 BLIM4 River Raisin at Blissfield MI 41.8330 -83.8670 BOLM4 Thunder Bay River near Bolton MI 45.1240 -83.6355 BTCM4 Kalamazoo River at Battle Creek MI 42.3239 -85.1975 BURM4 St. Joseph River MI/IN at Burlington MI 42.1031 -85.0800 BVTM4 Tobacco River at Beaverton MI 43.8790 -84.4750 CHPM4 Peshekee River near Champion MI 46.5570 -88.0030 CHSM4 Shiawassee River at Chesaning MI 43.1840 -84.1200 CLDM4 Thornapple River at Caledonia MI 42.8111 -85.4833 CLLM4 Sturgeon River - Houghton Co near Chassell MI 46.9772 -88.5097 CMPM4 Grand River at Comstock Park MI 43.0461 -85.6514 CMSM4 Kalamazoo River at Comstock MI 42.2856 -85.5139 COLM4 S. Br. Flint River at Columbiaville MI 43.1594 -83.3508 CRNM4 Escanaba River at Cornell MI 45.9090 -87.2140 CROM4 Muskegon River near Croton Dam MI 43.4347 -85.6653 CRYM4 Paint River near Crystal Falls MI 46.0960 -88.3710 CSSM4 Cass River near Cass City MI 43.5860 -83.1810 CYFM4 Michigamme River at Inflow to Michigamme Reservoir MI 46.1590 -88.2420 DAVM4 Kearsley Creek near Davison MI 43.0340 -83.5810 DETM4 Rouge River at Detroit MI 42.3720 -83.2560 DEXM4 Mill Creek near Dexter MI 42.2893 -83.8896 DMDM4 Grand River at Dimondale MI 42.6450 -84.6503 DNDM4 River Raisin at Dundee MI 41.9550 -83.6480 EAGM4 Looking Glass River near Eagle MI 42.8281 -84.7594 EJJM4 Jordan River at East Jordan MI 45.1025 -85.0980 ELNM4 Red Cedar River at East Lansing MI 42.7278 -84.4778 ETNM4 Grand River at Eaton Rapids MI 42.5128 -84.6539 EVRM4 Muskegon River at Evart MI 43.8992 -85.2553 FLSM4 Swartz Creek near Flint MI 42.9880 -83.7330 FLTM4 Flint River at Flint MI 43.0380 -83.7690 FOSM4 Flint River at Fosters MI 43.3080 -83.9530 FRDM4 Ford River near Hyde MI 45.7560 -87.2010 FRGM4 Shiawassee River near Fergus MI 43.2550 -84.1060 FRNM4 Cass River at Frankenmuth MI 43.3420 -83.7440 FSRM4 Clinton River near Clinton Township MI 42.5770 -82.9510 FTCM4 Thread Creek near Flint MI 42.9750 -83.6360 GACM4 Middle Rouge near Garden City MI 42.3490 -83.3130 GDLM4 Grand River at Grand Ledge MI 42.7542 -84.7444 GDRM4 Grand River at Grand Rapids MI 42.9645 -85.6764 GNNM4 Escanaba River at Gwinn MI 46.2780 -87.4360 HHTM4 Sycamore Creek at Holt MI 42.6403 -84.4828 HMGM4 Huron River at Hamburg MI 42.4650 -83.8000 HONM4 Platte River at Honor MI 44.6680 -86.0350 HOXM4 Pine River Nrn Lower at Hoxeyville MI 44.1930 -85.7700 HRVM4 Chocolay River near Harvey MI 46.4890 -87.3290 HSTM4 Thornapple River at Hastings MI 42.6159 -85.2364 HUMM4 Escanaba River at Humboldt MI 46.4990 -87.8860 INKM4 Lower Rouge at Inkster MI 42.3000 -83.3000 IONM4 Grand River at Ionia MI 42.9720 -85.0692 JACM4 Grand River at Jackson MI 42.2836 -84.4088 KOSM4 Menominee River at Koss MI 45.3900 -87.7000 LNSM4 Grand River at Lansing MI 42.7506 -84.5553 LUZM4 South Branch Ausable River at Luzerne MI 44.6150 -84.4560 LWLM4 Grand River at Lowell MI 42.9250 -85.3428 MARM4 Kalamazoo River at Marshall MI 42.2648 -84.9639 MCHM4 River Raisin near Manchester MI 42.1680 -84.0761 MCLM4 N. Br. Clinton River near Mount Clemens MI 42.6290 -82.8900 MCRM4 Chippewa River near Midland MI 43.5944 -84.3694 MGOM4 Kalamazoo River near Marengo MI 42.2617 -84.8558 MIDM4 Tittabawassee River at Midland MI 43.5952 -84.2355 MIOM4 Ausable River at Mio MI 44.6600 -84.1310 MONM4 River Raisin at Monroe City MI 41.9140 -83.3880 MORM4 Little Muskegon River at Morley MI 43.5025 -85.3425 MOTM4 St. Joseph River MI/IN at Mottville MI 41.8008 -85.7561 MPRM4 Pine River near Midland MI 43.5640 -84.3700 MPTM4 Chippewa River below Mt. Pleasant MI 43.6256 -84.7078 MRPM4 Maple River at Maple Rapids MI 43.1098 -84.6931 MSKM4 Manistee River near Mesick (Hodenpyl Dam) MI 44.3630 -85.8210 MSQM4 Manistique River at Manistique MI 46.0306 -86.1611 MTCM4 Clinton River at Mount Clemens MI 42.5960 -82.9100 MYFM4 Boardman River near Mayfield MI 44.6580 -85.4330 NBRM4 Salt River near North Bradley MI 43.7061 -84.4719 NHHM4 Huron River near New Hudson MI 42.5125 -83.6763 NILM4 St. Joseph River MI/IN at Niles MI 41.8292 -86.2597 NJNM4 Sturgeon River near Nahma Junction MI 45.9430 -86.7060 OTSM4 Flint River near Otisville MI 43.1111 -83.5194 OWOM4 Shiawassee River at Owosso MI 43.0150 -84.1810 PAUM4 Ontonagon River at Paulding MI 46.3570 -89.0730 PLAM4 Kalamazoo River at Plainwell MI 42.4486 -85.6494 PORM4 Grand River at Portland MI 42.8564 -84.9122 RBNM4 Grand River at Robinson Township MI 43.0400 -86.0811 RCLM4 Ontonagon River at Rockland MI 46.6990 -89.1600 RCMM4 Kalamazoo River near New Richmond MI 42.6447 -86.1161 RDOM4 Ausable River at Red Oak MI 44.6770 -84.2930 RIVM4 Paw Paw River at Riverside MI 42.1861 -86.3684 RKLM4 Ontonagon River at Rockland MI 46.7210 -89.2070 ROCM4 Rogue River at Rockford MI 43.0822 -85.5909 RUDM4 Pine River near Rudyard MI 46.1830 -84.6000 SAGM4 Saginaw River at Saginaw MI 43.4130 -83.9560 SALM4 Saline River near Saline MI 42.1690 -83.7870 SCTM4 Pere Marquette River near Scottville MI 43.9450 -86.2787 SFRM4 Rouge River at Southfield MI 42.4477 -83.2977 SHRM4 Manistee River near Sherman MI 44.4360 -85.6990 SMYM4 Flat River at Smyrna MI 43.0528 -85.2647 SNWM4 Sturgeon River at Sidnaw MI 46.5840 -88.5930 STRM4 Rifle River near Sterling MI 44.0600 -84.0100 SVRM4 Pigeon River at Vanderbilt MI 45.1567 -84.4667 SZCM4 Schweitzer Creek near Palmer MI 46.4110 -87.6240 TAPM4 Tahquamenon River at Paradise MI 46.5750 -85.2690 TECM4 River Raisin near Tecumseh MI 42.0030 -83.9340 TRRM4 Trap Rock River near Lake Linden MI 47.2290 -88.3850 TRVM4 St. Joseph River MI/IN at Three Rivers MI 41.9403 -85.6328 URDM4 Upper Rouge at Detroit MI 42.3942 -83.2783 VCKM4 Portage River at Vicksburg MI 42.1147 -85.4856 VGCM4 Clam River at Vogel Center MI 44.2000 -85.0530 VSSM4 Cass River at Vassar MI 43.3650 -83.5830 WAHM4 Cass River at Wahjamega MI 43.4506 -83.4414 WHTM4 White River above Whitehall MI 43.4642 -86.2326 WLKM4 Michigamme River at Witch Lake MI 46.2470 -88.0130 WLSM4 Manistee River near Wellston (Tippy Dam) MI 44.2580 -85.9400 WMSM4 Red Cedar River at Williamston MI 42.6831 -84.2191 WOLM4 Sturgeon River at Wolverine MI 45.2750 -84.6000 ADSM5 Wild Rice River (MN) near Ada MN 47.2655 -96.5008 AKAM5 Mississippi River at Anoka MN 45.1830 -93.3830 ALVM5 Snake River at Alvarado MN 48.1950 -97.0220 ASTM5 Cedar River at Austin MN 43.6540 -92.9550 ATKM5 Mississippi River near Aitkin MN 46.5411 -93.7075 BENM5 Chippewa River MN at Benson MN 44.3111 -95.6250 BLTM5 Sandhill River at Beltrami MN 47.5350 -96.5310 BTNM5 Buffalo Creek at Brownton MN 44.7355 -94.3508 CNFM5 Little Cannon River above Cannon Falls MN 44.7203 -92.9334 COSM5 Crow River near Cosmos MN 45.9355 -94.6750 CRKM5 Red Lake River at Crookston MN 47.7760 -96.6100 CSRM5 Rabbit River near Cambell MN 46.0955 -96.4111 DAWM5 West Branch Lac Qui Parle River at Dawson MN 44.9292 -96.0525 DELM5 Crow River at Delano MN 45.0420 -93.7900 DILM5 Buffalo River near Dilworth MN 46.9630 -96.6620 DOBM5 Dobbins Creek near Austin MN 43.6880 -92.9100 EGFM5 Red River of the North at East Grand Forks MN 47.9270 -97.0280 FOXM5 Ottertail River near Foxhome MN 46.2136 -96.3069 FTRM5 Mississippi River at Fort Ripley MN 46.1810 -94.3660 GENW3 Mississippi River at Genoa MN 43.5720 -91.2290 GLNM5 Buffalo Creek below Glencoe MN 44.7639 -94.0908 GTEM5 Minnesota River at Granite Falls MN 44.8000 -95.5330 HENM5 Minnesota River at Henderson MN 44.5170 -93.8830 HIGM5 Red Lake River at High Landing MN 48.0490 -95.8090 HILN8 Red River of the North at Halstad MN 47.3530 -96.8450 HLLM5 Two Rivers River at Hallock MN 48.7760 -96.9380 HNDM5 Wild Rice River (MN) at Hendrum MN 47.2670 -96.7970 HOUM5 Root River at Houston MN 43.7690 -91.5700 HRDM5 Rock River near Hardwick MN 43.7178 -96.1642 HSTM5 Mississippi River at Hastings MN 44.7670 -92.8670 HWYM5 Buffalo River at Hawley MN 46.8520 -96.3290 JCKM5 Des Moines River at Jackson MN 43.6190 -94.9860 JDNM5 Minnesota River at Jordan MN 44.6500 -93.6170 LANM5 Cedar River at Lansing MN 43.7380 -92.9550 LCRM5 Mississippi River at La Crescent MN 43.8700 -91.3050 LGPM5 Long Prairie River at Long Prairie MN 45.9750 -94.8660 LKBM5 Two Rivers River at Lake Bronson MN 48.7300 -96.6638 LKCM5 Mississippi River at Lake City MN 44.4670 -92.2640 LMBM5 Cottonwood River near Lamberton MN 44.2386 -95.2450 LNSM5 Root River at Lanesboro MN 43.7220 -91.9790 LUVM5 Rock River at Luverne MN 43.6542 -96.2008 LYNW3 Mississippi River at Lynxville MN 43.2070 -91.0870 MMLM5 Redwood River at Marshall MN 44.4690 -95.7890 MNKM5 Minnesota River at Mankato MN 44.1500 -94.0170 MSCM5 Mississippi River at Minnesota City MN 44.1570 -91.8070 MSPM5 Mississippi River at Minneapolis MN 45.0500 -93.2670 MVOM5 Minnesota River at Montevideo MN 44.9330 -95.7500 NULM5 Minnesota River at New Ulm MN 44.3170 -94.4250 NWUM5 Cottonwood River at New Ulm MN 44.2750 -94.4400 OSLM5 Red River of the North at Oslo MN 48.1940 -97.1410 OTRM5 Ottertail River near Foxhome MN 46.2113 -96.3069 PILM5 North Branch Middle Fork Zumbro River at Pine Island MN 44.1833 -92.6500 PIPM5 Pipestone Creek at Pipestone MN 44.0039 -96.3039 PNCM5 Snake River near Pine City MN 45.8408 -92.9319 PNLM5 Middle Fork Zumbro River at Pine Island 1S MN 44.1833 -92.6333 PVRM5 Lac Qui Parle River above Dawson MN 44.8853 -96.0519 RBCM5 Bear Creek near Rochester MN 44.0080 -92.4460 RCCM5 Cascade Creek at Rochester MN 44.0300 -92.4720 RCHM5 Zumbro River at Rochester MN 44.0620 -92.4660 RCSM5 Zumbro River at Rochester Beltline MN 44.0070 -92.4730 RDWM5 Mississippi River at Red Wing Lock & Dam #3 MN 44.6089 -92.6100 REDM5 Mississippi River at Red Wing MN 44.5670 -92.5170 RKFM5 Crow River at Rockford MN 45.0830 -93.7330 RLFM5 Red Lake River near Red Lake Falls MN 47.8969 -96.2755 ROCM5 Silver Creek near Rochester MN 44.0290 -92.4210 ROSM5 Roseau River at Roseau MN 48.8460 -95.7600 RUSM5 Redwood River at Russell MN 44.3194 -95.9547 RWDM5 Redwood River at Redwood Falls MN 44.5170 -95.1670 SABM5 South Buffalo River at Sabin MN 46.7760 -96.6270 SAVM5 Minnesota River at Savage MN 44.7830 -93.3330 SCNM5 St. Louis River at Scanlon MN 46.7033 -92.4186 SCOM5 Mississippi River at St. Cloud MN 45.5470 -94.1460 SHYM5 Marsh River at Shelly MN 47.4120 -96.7630 SKPM5 Minnesota River at Shakopee MN 44.8000 -93.5330 SOGM5 Little Cannon River at Sogn MN 44.4067 -92.9306 SPFM5 Cottonwood River above Springfield MN 44.2033 -95.0481 SRAM5 Snake River above Warren Retention Pond (CASH14 Bridge) MN 48.2681 -96.5111 SRBM5 Snake River at Warren Retention Pond (Pool Height) MN 48.2419 -96.5569 STCM5 Sauk River at St. Cloud MN 45.5600 -94.2300 STLM5 St. Croix River at Stillwater MN 45.0330 -92.7830 STPM5 Mississippi River at St. Paul MN 44.9500 -93.0830 TACM5 Prairie River above Taconite MN 47.3889 -93.3806 TRCM5 Turtle Creek near Austin MN 43.6500 -93.0340 TREW3 Mississippi River at Trempealeau MN 43.9890 -91.4330 TRFM5 Red Lake River at Thief River Falls MN 48.1144 -96.1791 TRRM5 Thief River at Thief River Falls MN 48.1855 -96.1697 TWVM5 Wild Rice River (MN) at Twin Valley MN 47.2660 -96.2480 WABM5 Mississippi River at Wabasha MN 44.3870 -92.0540 WARM5 Snake River at Warren MN 48.1950 -96.7790 WDOM5 Des Moines River at Windom MN 43.8740 -95.1190 WGOM5 North Fork Zumbro River near Wanamingo MN 44.3136 -92.8103 WIDM5 Mississippi River at Winona Dam 5a MN 44.0930 -91.6800 WNAM5 Mississippi River at Winona MN 44.0400 -91.6000 WSDM5 West Branch Lac Qui Parle River near Madison MN 44.9358 -96.1925 WSPM5 Middle Fork Whitewater River near Whitewater State Park MN 44.0500 -92.0500 ZUMM5 Zumbro River at Zumbro Falls MN 44.2870 -92.4240 AGYM7 Platte River near Agency MO 39.6890 -94.7040 ANNM7 Black River near Annapolis MO 37.3360 -90.7890 ARNM7 Meramec River near Arnold MO 38.4570 -90.3610 BLRM7 Big Creek near Blairstown MO 38.5550 -93.9660 BLVM7 Blackwater River near Blue Lick MO 38.9920 -93.1970 BONM7 Petite Saline Creek near Boonville MO 38.9170 -92.7040 BOZM7 Missouri River at Boonville MO 38.9780 -92.7540 BRLM7 Nodaway River near Burlington Junction MO 40.4450 -95.0880 BRNM7 Grand River near Brunswick MO 39.4310 -93.1600 BYRM7 Big River at Byrnesville MO 38.3820 -90.6300 CAGM7 Mississippi River at Winfield Lock MO 39.0010 -90.6870 CANM7 Mississippi River at Canton MO 40.1420 -91.5190 CAXM7 Wakenda Creek at Carrollton MO 39.3470 -93.4960 CHSI2 Mississippi River at Chester MO 37.9090 -89.8200 CHTM7 Spring River at Carthage MO 37.1860 -94.3160 CHZM7 Grand River near Chillicothe MO 39.7540 -93.5560 CLKM7 Mississippi River at Clarksville MO 39.3730 -90.9050 CMSM7 Missouri River near Chamois MO 38.6828 -91.7622 CMZM7 Sac River near Caplinger Mills MO 37.8700 -93.8030 CPGM7 Mississippi River at Cape Girardeau MO 37.3020 -89.5180 CRTM7 Mississippi River at Caruthersville MO 36.1900 -89.6500 DNZM7 Current River at Doniphan MO 36.6220 -90.8470 EADM7 Mississippi River at St. Louis MO 38.6290 -90.1800 EMCM7 Jacks Fork at Eminence MO 37.1550 -91.3590 ERKM7 Meramec River near Eureka MO 38.5160 -90.5920 EWNM7 North Fabius River near Ewing 5E MO 40.0189 -91.6219 FFXM7 Tarkio River near Fairfax MO 40.3390 -95.4070 FSKM7 St. Francis River at Fisk MO 36.7800 -90.2010 FYTM7 Moniteau Creek near Fayette MO 39.1210 -92.5610 GAZM7 Grand River near Gallatin MO 39.9270 -93.9420 GGYM7 Mississippi River at Gregory Landing MO 40.2790 -91.4960 GLNM7 James River at Galena MO 36.8050 -93.4780 GLZM7 Missouri River at Glasgow MO 39.2220 -92.8490 GSCM7 Missouri River at Gasconade MO 38.6750 -91.5560 HNNM7 Mississippi River at Hannibal MO 39.7230 -91.3740 HRNM7 Missouri River at Hermann MO 38.7100 -91.4390 HTNM7 Little Osage River at Horton MO 37.9940 -94.3690 HZLM7 Gasconade River near Hazelgreen MO 37.7600 -92.4520 JCMM7 Moreau River near Jefferson City MO 38.5290 -92.1920 JFFM7 Missouri River at Jefferson City MO 38.5870 -92.1800 JOPM7 Shoal Creek near Joplin MO 37.0230 -94.5160 JRMM7 Gasconade River at Jerome MO 37.9300 -91.9770 KAYM7 Blue River at 63rd Street MO 39.0140 -94.5260 KBNM7 Little Blue River at Knobtown MO 38.9640 -94.4270 KBPM7 Blue River at Blue Parkway MO 39.0340 -94.5270 KCCM7 Blue River at "Bannister Road, Kansas City" MO 38.9570 -94.5590 KCDM7 Missouri River at Kansas City MO 39.1120 -94.5880 KCTM7 Blue River at 12th Street MO 39.0970 -94.4910 KNYM7 Blue River at 71 Highway MO 38.9730 -94.5450 KSDM7 Blue River at Stadium Drive MO 39.0590 -94.5130 KSVM7 Blue River at 17th Street MO 39.0900 -94.4940 KSYM7 Blue River at 40 Highway MO 39.0700 -94.5070 KWPM7 Brush Creek at "Ward Parkway, Kansas City" MO 39.0330 -94.6070 LKCM7 Little Blue River near Lake City MO 39.1010 -94.3000 LUSM7 Mississippi River at Louisiana MO 39.4530 -91.0470 MBYM7 Fishing River near Mosby MO 39.3190 -94.3130 MIAM7 Missouri River at Miami MO 39.3280 -93.2250 MYVM7 102 River at Maryville MO 40.3450 -94.8320 NAPM7 Missouri River at Napoleon MO 39.1330 -94.0640 NLDM7 Salt River at New London MO 39.6120 -91.4080 NMDM7 Mississippi River at New Madrid MO 36.5840 -89.5250 NVDM7 Marmaton River near Nevada MO 37.9200 -94.3600 NVZM7 Chariton River near Novinger MO 40.2350 -92.6870 OMNM7 Cuivre River at Old Monroe MO 38.9290 -90.7460 OTTM7 Lamine River near Otterville MO 38.7030 -92.9780 PALM7 North River at Palmyra MO 39.8180 -91.5200 PATM7 Grand River near Pattonsburg MO 40.0250 -94.1270 PAZM7 St. Francis River at Patterson MO 37.1940 -90.5030 PCFM7 Meramec River near Pacific MO 38.4370 -90.7950 PLCM7 Platte River near Platte City MO 39.3690 -94.7870 PPBM7 Black River at Poplar Bluff MO 36.7580 -90.4070 PRIM7 Chariton River near Prairie Hill MO 39.5400 -92.7900 RICM7 Crooked Creek near Richmond MO 39.3330 -93.9800 RIFM7 Gasconade River near Rich Fountain MO 38.3890 -91.8210 RIPI2 La Moine River at Ripley MO 40.0250 -90.6310 RSDM7 102 River at Rosendale MO 40.0460 -94.8290 SBEM7 Missouri River at Sibley MO 39.1790 -94.1800 SCLM7 Missouri River at St. Charles MO 38.7860 -90.4720 SCZM7 Osage River near Schell City MO 38.0560 -94.1220 SEEM7 Meramec River near Steelville MO 37.9994 -91.3608 SFLM7 Des Moines River at St. Francisville MO 40.4620 -91.5670 SJSM7 Missouri River at St. Joseph MO 39.7530 -94.8580 SLLM7 Meramec River near Sullivan MO 38.1580 -91.1080 SMHM7 Little Platte River at Smithville MO 39.3880 -94.5790 SNZM7 Grand River near Sumner MO 39.6400 -93.2740 SSTM7 Platte River at Sharps Station MO 39.4010 -94.7270 STTM7 Osage River near St. Thomas MO 38.4220 -92.2090 SVRM7 Mississippi River at Saverton Lock MO 39.6390 -91.2500 TAYM7 South Fabius River near Taylor MO 39.8970 -91.5800 TBNM7 Big Piney at Fort Leonard Wood MO 37.7370 -92.0810 TIFM7 Elk River near Tiff City MO 36.6310 -94.5870 TNZM7 North Fork River near Tecumseh MO 36.6230 -92.2480 TRYM7 Cuivre River at Troy MO 39.0000 -91.0020 TTZM7 Thompson River near Trenton MO 40.0690 -93.6380 UNNM7 Bourbeuse River at Union MO 38.4440 -90.9950 URHM7 South Grand River at Urich MO 38.4530 -94.0040 VLLM7 Meramec River at Valley Park MO 38.5460 -90.4950 VLYM7 Blackwater River near Valley City MO 38.8700 -93.6230 VNBM7 Current River at Van Buren MO 36.9910 -91.0150 WCOM7 Spring River near Waco MO 37.2460 -94.5660 WHGM7 Missouri River at Washington MO 38.6110 -91.0140 WPHM7 Maries River at Westphalia MO 38.4320 -91.9900 WVYM7 Missouri River near Waverly MO 39.2140 -93.5150 WYLM7 Fox River near Wayland MO 40.3920 -91.5970 ABDM6 Buttahatchie River near Aberdeen MS 33.7900 -88.3200 ABEM6 Tombigbee River at Aberdeen Lock and Dam MS 33.8297 -88.5200 ACML1 Black River at Acme MS 31.2670 -91.8320 AMYM6 Tombigbee River near Amory MS 33.9900 -88.5500 ANGM6 Big Sunflower River at Anguilla MS 32.9720 -90.7780 ARKM6 Coldwater River at Arkabutla Dam MS 34.7497 -90.1336 ARSA4 Mississippi River at Arkansas City MS 33.5650 -91.2430 BELM6 Yazoo River at Belzoni MS 33.1670 -90.4930 BGBM6 Tombigbee River at Bigbee MS 34.0100 -88.5100 BKNM6 Black Creek at Brooklyn MS 31.0520 -89.2040 BLWM6 Biloxi River near Wortham MS 30.5580 -89.1190 BOVM6 Big Black River at Bovina MS 32.3470 -90.6970 BRCM6 Skuna River at Bruce MS 33.9700 -89.3500 BTAM6 Big Black River at Bentonia MS 32.6030 -90.3620 CARM6 Pearl River at Carthage MS 32.7070 -89.5260 CBUM6 Tombigbee River at Stennis Lock and Dam MS 33.5200 -88.4900 CCTM6 Yalobusha River at Calhoun City MS 33.8400 -89.3100 CKYM6 Chunky River at Chunky MS 32.3260 -88.9100 CLMM6 Pearl River at Columbia MS 31.2370 -89.8480 CLSM6 Leaf River at Collins MS 31.7070 -89.4070 CLUM6 Luxapallila Creek near Columbus MS 33.5100 -88.4000 COGL1 Bayou Macon at Como MS 32.0920 -91.5930 CREM6 East Hobolochitto Creek near Caesar MS 30.5710 -89.5950 CYNL1 Tensas River at Clayton MS 31.7240 -91.5440 DIBM6 Tchoutacabouffa River near D'Iberville MS 30.4760 -88.8930 DLAM6 Strong River at D'lo MS 31.9780 -89.8980 ENBM6 Pearl River at Edinburg MS 32.7990 -89.3360 ENDM6 Yocona River at Enid Dam MS 34.1581 -89.9039 ENSM6 Chickasawhay River at Enterprise MS 32.1760 -88.8190 ETAM6 Little Talahatchie River at Etta MS 34.4800 -89.2300 FULM6 Tombigbee River near Fulton MS 34.2600 -88.4500 GDHM6 Pearl River at Lena MS 32.6670 -89.6460 GEEM6 Mississippi River at Greenville MS 33.2920 -91.1610 GLFM6 Wolf River above Gulfport MS 30.3930 -89.2060 GREM6 Yazoo River at Greenwood MS 33.5210 -90.1840 GRNM6 Yalobusha River at Grenada Dam MS 33.8060 -89.7710 HATM6 Leaf River at Hattiesburg MS 31.3430 -89.2790 HBGM6 Bouie Creek at Hattiesburg MS 31.4260 -89.4150 JACM6 Pearl River at Jackson MS 32.2817 -90.1790 JNEL1 Black River at Jonesville L&D MS 31.4830 -91.8630 JSNM6 Pearl River at Ross Barnett Reservoir MS 32.3960 -90.0640 KLNM6 Jourdan River at Kiln MS 30.3870 -89.4410 KSCM6 Yockanookany River at Kosciusko MS 33.0320 -89.5780 LEGM6 Coldwater River near Lewisburg MS 34.8408 -89.8256 LEKM6 Chickasawhay River at Leaksville MS 31.1500 -88.5700 LMGM6 Talahatchie River near Lambert MS 34.1800 -90.2200 LNDM6 Wolf River near Landon MS 30.4830 -89.2740 LOGM6 Talahatchie River at Locopolis MS 33.9700 -90.2300 LURM6 Tallahala Creek at Laurel MS 31.6810 -89.1150 LYMM6 Biloxi River near Lyman MS 30.4880 -89.0360 MCLM6 Leaf River near McLain MS 31.1000 -88.8100 MCNM6 Noxubee River at Macon MS 33.1000 -88.5600 MKSM6 Coldwater River at Marks MS 34.2500 -90.2700 MNLM6 West Hobolochitto Creek near McNeil MS 30.6620 -89.6860 MRRM6 Pascagoula River at Merril MS 30.9700 -88.7300 MTCM6 Pearl River at Monticello MS 31.5530 -90.0880 NECL1 Boeuf River at Fort Necessity MS 32.0720 -91.9270 NLGL1 Tensas River at Newlight MS 32.0890 -91.4900 NTZM6 Mississippi River at Natchez MS 31.5380 -91.4420 OFAM6 Yockanookany River at Ofahoma MS 32.7500 -89.6720 OLVM6 Coldwater River near Olive Branch MS 34.9000 -89.7500 ORAM6 Escatawpa River above Orange Grove MS 30.4590 -88.4520 OXDM6 Yocona River near Oxford MS 34.2600 -89.5200 PGFM6 Pascagoula River at Graham Ferry MS 30.6110 -88.6410 PLAM6 Pearl River at Philadelphia MS 32.8410 -89.0970 RATM6 Pearl River at Ratliff's Ferry MS 32.5940 -89.8400 RNTM6 Tallahala Creek near Runnelstown MS 31.3300 -89.1200 ROCM6 Pearl River at Rockport MS 31.7900 -90.1430 ROST1 Wolf River at Rossville MS 35.0542 -89.5417 RSAM6 Homochitto River at Rosetta MS 31.3250 -91.1070 SARM6 Coldwater River near Sarah MS 34.5700 -90.2300 SHBM6 Chickasawhay River at Shubuta MS 31.8570 -88.6860 SRDM6 Talahatchie River at Sardis Dam MS 34.3961 -89.7903 SUNM6 Big Sunflower River at Sunflower MS 33.5470 -90.5430 SWNM6 Talahatchie River near Swan Lake MS 33.8600 -90.2800 TBBM6 Tibbee Creek near Tibbee MS 33.5400 -88.6300 TDGL1 Tensas River at Tendal MS 32.4320 -91.3670 TPOM6 Town Creek at Tupelo MS 34.2400 -88.7000 TYTM6 Bogue Chitto River near Tylertown MS 31.1770 -90.2800 VCKM6 Mississippi River at Vicksburg MS 32.3120 -90.9070 WOOM6 Buffalo River at Woodville MS 31.2260 -91.2960 WSTM6 Big Black River at West MS 33.1940 -89.7710 WTGM6 Tuscolameta Creek at Walnut Grove MS 32.5880 -89.4650 WYNM6 Chickasawhay River near Waynesboro MS 31.6800 -88.6800 YWGM6 Yalobusha River at Whaley MS 33.6260 -90.1080 YZOM6 Yazoo River at Yazoo City MS 32.8370 -90.4420 ABOM8 Clark Fork River above Missoula MT 46.8700 -113.9300 ACKM8 Armells Creek near Landusky MT 47.6106 -108.6947 ADDM8 Sun River below Diversion Dam near Augusta MT 47.6190 -112.6920 AGSM8 Sun River at Gibson Dam near Augusta MT 47.6017 -112.7536 ASLM8 Tongue River near Ashland MT 45.8720 -106.1870 BARM8 Beaverhead River at Barretts MT 45.1163 -112.7497 BATM8 Battle Creek at International border MT 49.0019 -109.4217 BCMM8 Battle Creek near Chinook MT 48.6500 -109.2333 BDCM8 Badger Creek below Four Horns Canal near Browning MT 48.3700 -112.8019 BELM8 Clark Fork River below Missoula MT 46.8700 -114.1300 BFYM8 Clarks Fork of the Yellowstone near Belfry MT 45.0100 -109.0650 BGCM8 Big Muddy River near Antelope MT 48.6800 -104.5100 BGHM8 Bighorn River near Bighorn MT 46.1247 -107.4684 BGKM8 Big Hole River below Big Lake Creek at Wisdom MT 45.6186 -113.4569 BHDM8 Big Hole River below Mudd Creek near Wisdom MT 45.8075 -113.3125 BHRM8 Big Horn River at Big Horn Reservoir MT 45.3122 -107.9394 BILM8 Yellowstone River at Billings MT 45.7500 -108.4660 BITM8 Bitterroot River near Missoula MT 46.8300 -114.0600 BLDM8 Boulder River near Boulder MT 46.2111 -112.0908 BONM8 Blackfoot River near Bonner MT 46.9000 -113.7600 BSMM8 Big Sandy Creek near Assinniboine MT 48.5267 -109.8408 BSRM8 Big Sandy Creek at Reservation boundary near Rocky Boy MT 48.1725 -109.8253 BTMM8 Boulder River at Big Timber MT 45.8330 -109.9380 CBCM8 Cut Bank Creek near Browning MT 48.6167 -113.0350 CBKM8 Cut Bank Creek at Cut Bank MT 48.6333 -112.3461 CCMM8 Clear Creek near Chinook near mouth MT 48.5789 -109.3906 CFMM8 Flathead River at Columbia Falls MT 48.3600 -114.1800 CLBM8 Missouri River near Culbertson MT 48.1200 -104.4700 CLKM8 Beaverhead River at Clark Canyon Dam near Dillon MT 45.0017 -112.8575 CMRM8 Madison River at Kirby Ranch near Cameron MT 44.8890 -111.5800 CORM8 Yellowstone River at Corwin Springs MT 45.1120 -110.7940 DARM8 Bitterroot River near Darby MT 45.9700 -114.1400 DAYW4 Tongue River at Dayton MT 44.8500 -107.3000 DBRM8 Dearborn River near Craig MT 47.1992 -112.0956 DILM8 Beaverhead River near Dillon MT 45.3050 -112.5625 DKRM8 Tongue River at Tongue River Reservoir MT 45.0829 -106.4615 DLGM8 Clark Fork River at Deer Lodge MT 46.4000 -112.7400 DMRM8 Milk River near Dodson MT 48.4100 -108.2900 DRUM8 Clark Fork River near Drummond MT 46.6600 -113.1600 DSLM8 Tongue River near Decker MT 45.0090 -106.8350 DTTM8 Teton River near Dutton MT 47.9303 -111.5519 EGRM8 East Gallatin River below Bridger Creek MT 45.7250 -111.0700 ELCM8 Sun River below Elk Creek near Augusta MT 47.5067 -112.2819 EPRM8 Poplar River near Intl Boundary MT 49.0000 -105.4100 ERNM8 Milk River at Rudyard MT 48.9750 -110.4220 ESSM8 Middle Fork Flathead River near Essex MT 48.2600 -113.6000 FBNM8 Missouri River at Fort Benton MT 47.8176 -110.6664 FCFM8 North Fork Flathead River near Columbia Falls MT 48.5000 -114.1300 FISM8 Fisher River near Libby MT 48.3600 -115.3100 FREM8 Frenchman Creek near Intl Boundary MT 49.0000 -107.3000 FRYM8 Yellowstone River at Forsyth MT 46.2670 -106.6900 GFLM8 Missouri River near Great Falls MT 47.5844 -111.0597 GLGM8 Gallatin River near Gallatin Gateway MT 45.4975 -111.2697 GLNM8 Yellowstone River at Glendive MT 47.1100 -104.7200 GLWM8 Milk River near Glasgow MT 48.1600 -106.6000 GNLM8 Big Hole River near Glen MT 45.4406 -112.5556 HASM8 Missouri River below Hauser Dam near Helena MT 46.7672 -111.8908 HAVM8 Milk River at Fresno Reservoir near Havre MT 48.6011 -109.9458 HBDM8 Madison River at Hebgen Dam near West Yellowstone MT 44.8668 -111.3375 HLKM8 Missouri River near Hell Creek MT 47.5700 -106.9200 HLWM8 Musselshell River near Harlowton MT 46.4300 -109.8400 HRDM8 Little Bighorn River near Hardin MT 45.7358 -107.5567 HRLM8 Milk River near Harlem MT 48.4894 -108.7578 HTRM8 Missouri River below Holter Dam near Wolf Creek MT 46.9947 -112.0103 HVDM8 Tenmile Creek at Helena Valley Reservoir MT 46.6380 -111.8830 HVRM8 Milk River at Havre MT 48.5639 -109.6950 JDRM8 Judith River near Winifred near mouth MT 47.6653 -109.6528 KERM8 Flathead Lake at Polson MT 47.6972 -114.1603 LCPM8 Lake Creek near Power MT 47.7081 -111.4083 LDKM8 Missouri River near Landusky MT 47.6300 -108.6900 LIVM8 Yellowstone River near Livingston MT 45.5970 -110.5650 LOCM8 Powder River at Locate MT 46.4300 -105.3094 LOGM8 Gallatin River near Logan MT 45.8853 -111.4375 LPPM8 Little Prickly Pear Creek at Wolf Creek MT 47.0053 -112.0694 LRRM8 Red Rock Creek at Lima Reservoir near Lima MT 44.6544 -112.3625 LTRM8 Teton River at Loma MT 47.9325 -111.5636 LVNM8 Musselshell River near Lavina MT 46.2930 -108.8920 LYDM8 Lake Koocanusa near Libby MT 48.4119 -115.3092 MADM8 Madison River below Ennis Lake near McAllister MT 45.4903 -111.6333 MALM8 Milk River at Malta MT 48.3600 -107.8800 MDNM8 Muddy Creek near Vaughn MT 47.6250 -111.6347 MDSM8 Madison River near West Yellowstone MT 44.6569 -111.0675 MDYM8 Muddy Creek at Vaughn MT 47.5617 -111.5425 MGGM8 Swiftcurrent Creek at Many Glacier near Babb MT 48.7992 -113.6558 MHDM8 Powder River at Moorhead MT 45.0700 -105.8700 MICM8 Tongue River at Miles City MT 46.3850 -105.8450 MILM8 Yellowstone River at Miles City MT 46.4220 -105.8620 MLRM8 Big Hole River near Melrose MT 45.5267 -112.7008 MNRM8 Big Hole River at Maiden Rock near Divide MT 45.7014 -112.7344 MRCM8 Marias River near Chester MT 48.3064 -111.0797 MRPM8 Madison River above Powerplant near McAllister MT 45.4868 -111.6330 MSBM8 Musselshell River near Mosby MT 46.9900 -107.8700 MUSM8 Musselshell River at Musselshell MT 46.5230 -108.1080 NFMM8 North Fork Milk River above St Mary Canal near Browning MT 48.9708 -113.0553 NFSM8 Sun River near Augusta MT 47.6408 -112.8594 NMRM8 North Fork Milk River near International boundary near Browning MT 49.0219 -112.9711 NSHM8 Milk River at Nashua MT 48.1300 -106.3600 ORHM8 Rock Creek near Opheim MT 48.9700 -106.8400 OROI1 Orofino Creek above Whiskey Creek near Orofino MT 46.4700 -116.1700 PDBM8 Milk River near Cut Bank MT 49.0075 -112.5450 PEOM8 Peoples Creek near Hays MT 48.2236 -108.7133 PISM8 Sun River at Pishkun Reservoir near Augusta MT 47.6767 -112.4967 PKPM8 Prickly Pear Creek near Clancy MT 46.5192 -111.9458 PLNM8 Clark Fork River near Plains MT 47.4600 -114.9200 PLRM8 Poplar River near Poplar MT 48.1000 -105.1000 POBM8 North Fork Flathead River near Polebridge MT 48.7800 -114.2800 PPRM8 Poplar River near Intl Boundary MT 48.9900 -105.7000 PRCM8 Prospect Creek at Thompson Falls MT 47.5900 -115.3600 RCCM8 Rock Creek near Clinton MT 46.7200 -113.6800 RIMM8 Tenmile Creek near Rimini MT 46.5242 -112.2561 ROKM8 Rock Creek near Red Lodge MT 45.0861 -109.3292 RRBM8 Ruby River below Ruby Reservoir near Alder MT 45.2422 -112.1100 RRCM8 Redwater River near Circle MT 47.4100 -105.5700 RRLM8 Red Rock Creek above Lakes near Lakeview MT 44.6156 -111.6283 RRRM8 Ruby River above Ruby Reservoir near Alder MT 45.1925 -112.1417 RUPM8 Musselshell River near Roundup MT 46.4300 -108.5720 SACM8 Milk River near Saco MT 48.5100 -107.2200 SBUM8 Swiftcurrent Creek at Sherburne Reservoir near Babb MT 48.8283 -113.5211 SCCM8 Saint Mary River near Babb MT 48.9472 -113.3744 SFBM8 South Fork Milk River near Babb MT 48.7539 -113.1667 SHAM8 Musselshell River near Shawmut MT 46.3180 -109.4600 SHLM8 Marias River near Shelby MT 48.4247 -111.8917 SIDM8 Yellowstone River near Sidney MT 47.6700 -104.1500 SLDM8 Shields River near Livingston (7NE) MT 45.7380 -110.4790 SMBM8 Saint Mary River at International boundary MT 49.0119 -113.2992 SMHM8 Smith River below Eagle Creek near Fort Logan MT 46.8281 -111.1914 SMYM8 Saint Mary River near Babb MT 48.8333 -113.4189 SNWM8 Smith River below Newlan Creek near White Sulphur Springs MT 46.5908 -111.0572 SRAM8 Stillwater River near Absarokee MT 45.5366 -109.4213 SRGM8 Clark Fork River at St. Regis MT 47.3300 -115.0400 SSRM8 Sun River near Simms MT 47.5000 -111.9300 STRM8 St. Regis River near St. Regis MT 47.3000 -115.1200 STWM8 Stillwater River near Whitefish MT 48.3100 -114.3800 SWRM8 Swan River near Bigfork MT 48.0200 -113.9800 TBRM8 Marias River at Tiber Reservoir / Lake Elwell MT 48.3180 -111.0910 TFKM8 Jefferson River near Three Forks MT 45.9000 -111.6000 THRM8 Thompson River near Thompson Falls MT 47.6000 -115.2200 TMPM8 Milk River near Tampico MT 48.3100 -106.8200 TMRM8 Two Medicine River below South Fork near Browning MT 48.4267 -112.9889 TOSM8 Missouri River near Toston MT 46.1500 -111.4200 TRYM8 Yaak River near Troy MT 48.5600 -115.9700 TSFM8 Teton River below South Fork near Choteau MT 47.7950 -112.1890 TWIM8 Jefferson River near Twin Bridges MT 45.6125 -112.3297 TWNM8 Beaverhead River near Twin Bridges MT 45.3840 -112.4530 ULMM8 Missouri River near Ulm MT 47.4300 -111.3900 VAUM8 Sun River near Vaughn MT 47.5300 -111.4900 VICM8 Bitterroot River near Victor MT 46.4300 -114.1400 VNRM8 Big Dry Creek near Van Norman MT 47.3500 -106.3600 VRGM8 Missouri River at Virgelle MT 48.0000 -110.2600 WCHM8 Willow Creek near Harrison MT 45.7230 -111.7410 WGCM8 Middle Fork Flathead River near West Glacier MT 48.5000 -114.0100 WHRM8 Whitefish River near Whitefish MT 48.3400 -114.2800 WLLM8 Willow Creek at Willow Creek Reservoir MT 47.5470 -112.4300 WPTM8 Missouri River near Wolf Point MT 48.0700 -105.5300 AVLN7 French Broad River at Asheville NC 35.6100 -82.5800 BGWN7 N.E. Cape Fear River near Burgaw NC 34.6000 -77.8800 BIRN7 Oconaluftee River at Birdtown NC 35.4600 -83.3500 BLAN7 French Broad River at Blantyre NC 35.3000 -82.6300 BLTN7 Swannanoa River at Biltmore NC 35.5700 -82.5500 BSPN7 Broad River near Boiling Springs NC 35.2108 -81.6978 BYNN7 Haw River near Bynum NC 35.7630 -79.1330 CHIN7 N.E. Cape Fear River near Chinquapin NC 34.8300 -77.8300 CLYN7 Neuse River near Clayton NC 35.6470 -78.4060 CPFN7 Cape Fear River at Lock 1 NC 34.4000 -78.2900 CTPN7 Pigeon River at Canton NC 35.5219 -82.8481 EFDN7 Fishing Creek near Enfield NC 36.1510 -77.6930 ELKN7 Yadkin River at Elkin NC 36.2400 -80.8500 ELZN7 Cape Fear River at Elizabethtown NC 34.6300 -78.5800 FAYN7 Cape Fear River at Fayetteville NC 35.0504 -78.8583 GLDN7 Neuse River near Goldsboro NC 35.3370 -77.9980 HAWN7 Haw River at Haw River NC 36.0870 -79.3670 HOKN7 Contentnea Creek at Hookerton NC 35.4289 -77.5831 HTSN7 French Broad River at Hot Springs NC 35.8900 -82.8200 KINN7 Neuse River at Kinston NC 35.2600 -77.5900 LBRN7 Lumber River at Lumberton NC 34.6300 -79.0200 LOUN7 Tar River at Louisburg NC 36.1030 -78.3040 LOWN7 South Fork Catawba River at Lowell NC 35.2900 -81.1000 MANN7 Lower Little River at Manchester NC 35.1935 -78.9854 MARN7 French Broad River near Marshall NC 35.7800 -82.6600 MCKN7 South Fork Yadkin River near Mocksville NC 35.8400 -80.6600 MOHN7 Cape Fear River near Moncure NC 35.5890 -79.0520 NHPN7 Haw River at Jordan Lake NC 35.6600 -79.0700 NRWN7 Rocky River near Norwood NC 35.1480 -80.1760 NUDN7 Neuse River at Falls Lake NC 35.9200 -78.5800 PGVN7 Tar River at Greenville NC 35.6200 -77.3700 POBN7 Lower Little River near Fort Bragg NC 35.1770 -79.0250 RKYN7 Tar River at Rocky Mount NC 35.8990 -77.8660 RRDN7 Roanoke River at Roanoke Rapids NC 36.4600 -77.6340 SCON7 Roanoke River near Scotland Neck NC 36.2090 -77.3840 SMFN7 Neuse River at Smithfield NC 35.5130 -78.3500 STPN7 Cape Fear River at W.O. Huske Lock NC 34.8300 -78.8300 TARN7 Tar River at Tarboro NC 35.8940 -77.5330 TKSN7 Tuckasegee River at Bryson City NC 35.4300 -83.4500 TMVN7 Valley River at Tomotla NC 35.1380 -83.9800 WKSN7 Yadkin River at Wilkesboro NC 36.1500 -81.1500 WLLN7 Roanoke River at Williamston NC 35.8600 -77.0400 WNDN7 Cashie River near Windsor NC 36.0475 -76.9853 YADN7 Yadkin River at Yadkin College NC 35.8560 -80.3870 ABRN8 Wild Rice River (MN) at Abercrombie ND 46.4700 -96.7820 BANN8 Souris River near Bantry ND 48.5060 -100.4340 BIWN8 Missouri River at Bismarck ND 46.7475 -100.8200 BREN8 Cannonball River at Breien ND 46.3760 -100.9340 BVRN8 Beaver Creek at Linton ND 46.2686 -100.2514 DARN8 Souris River at Lake Darling ND 48.4500 -101.5830 DCBN8 Devils Lake at Creel Bay ND 48.0925 -98.9275 DESN8 Des Lacs River at Foxholm ND 48.3710 -101.5700 DNDN8 Heart River at Dickinson Dam ND 46.8697 -102.8269 DRTN8 Red River of the North at Drayton ND 48.5720 -97.1470 ENDN8 Maple River at Enderlin ND 46.6220 -97.5740 FGON8 Red River of the North at Fargo ND 46.8610 -96.7830 FOXN8 Souris River near Foxholm ND 48.3720 -101.5050 GARN8 Missouri River at the Garrison Dam ND 47.5028 -101.4306 GCEN8 James River near Grace City ND 47.5580 -98.8620 GDVN8 Knife River near Golden Valley ND 47.1542 -102.0706 GLUN8 Heart River at Heart Butte Dam ND 46.5953 -101.8094 GRNN8 Park River at Grafton ND 48.4250 -97.4120 HGRN8 Goose River at Hillsboro ND 47.4080 -97.0600 HWDN8 Sheyenne River at Harwood ND 46.9770 -96.8930 HZNN8 Knife River near Hazen ND 47.2850 -101.6220 JAMN8 Pipestem Creek at Pipestem Dam ND 46.9622 -98.7531 JMDN8 James River at Jamestown Dam ND 46.9306 -98.7531 JMSN8 James River at Jamestown ND 46.8890 -98.6820 KLSN8 Wintering River below Karlsruhe ND 48.1380 -100.5390 KNDN8 Sheyenne River at Kindred ND 46.6310 -97.0010 KSLN8 James River near Kensal ND 47.3990 -98.7970 LAMN8 James River at LaMoure ND 46.3560 -98.3060 LBNN8 Sheyenne River at Lisbon ND 46.4470 -97.6790 LGNN8 Souris River at Logan ND 48.1500 -101.1500 LMCN8 Little Muddy River near Williston ND 48.2830 -103.5670 LUDN8 James River near Ludden ND 45.9480 -98.1750 MDAN8 Little Missouri River at Medora ND 46.9170 -103.5170 MDNN8 Heart River near Mandan ND 46.8340 -100.9740 MENN8 Apple Creek near Menoken ND 46.7940 -100.6570 MINN8 Souris River near Minot ND 48.2460 -101.3710 MION8 Souris River at Minot-Broadway Bridge ND 48.2330 -101.3000 MNGN8 Knife River at Manning ND 47.2360 -102.7690 MPLN8 Maple River near Mapleton ND 46.8670 -97.1060 MTHN8 Little Missouri River at Marmarth ND 46.2960 -103.9180 MTON8 Forest River at Minto ND 48.2860 -97.3700 NCEN8 Pembina River at Neche ND 48.9890 -97.5570 OKEN8 James River near Oakes ND 46.1380 -98.1150 PBNN8 Red River of the North at Pembina ND 48.9740 -97.2380 PGEN8 Pipestem Creek near Pingree ND 47.1670 -98.9690 REGN8 Cannonball River at Regent ND 46.4260 -102.5510 RLGN8 Cedar Creek near Raleigh ND 46.0840 -101.3330 SHWN8 Souris River near Sherwood ND 48.9900 -101.9580 SWRN8 Souris River at Sawyer ND 48.1000 -101.0500 TOWN8 Souris River near Towner ND 48.3500 -100.4170 TRTN8 Beaver Creek near Trotters ND 47.1631 -103.9922 VCRN8 Sheyenne River at Valley City ND 46.9160 -98.0100 VLVN8 Souris River at Velva ND 48.0670 -100.9330 WFON8 Sheyenne River at West Fargo Diversion ND 46.8910 -96.9180 WHNN8 Red River of the North at Wahpeton ND 46.2660 -96.5990 WLCN8 Willow Creek near Willow City ND 48.5840 -100.4350 WLHN8 Pembina River at Walhalla ND 48.9140 -97.9170 WLTN8 Missouri River near Williston ND 48.1080 -103.7140 WSTN8 Souris River near Westhope ND 48.9960 -100.9580 WTFN8 Little Missouri River near Watford City ND 47.5960 -103.2630 ZAPN8 Spring Creek at Zap ND 47.2830 -101.9170 ABRN1 Little Nemaha River near Auburn NE 40.3920 -95.8130 ALDN1 Wood River near Alda NE 40.8530 -98.4720 ASDN1 Salt Creek (ADAK1) at Ashland NE 41.0410 -96.3710 ASLN1 Platte River near Ashland NE 41.0620 -96.3240 BARN1 Big Blue River near Barneston NE 40.0440 -96.5870 BDYN1 North Platte River at Brady NE 41.0190 -100.3710 BEAN1 Big Blue River at Beatrice NE 40.2560 -96.7460 BEKN1 Republican River near Benkelman NE 40.0094 -101.5422 BENN1 Republican River near Benkelman NE 40.0350 -101.5430 BEVN1 Beaver Creek near Beaver City NE 40.1200 -99.8930 BGPN1 North Platte River at Bridgeport NE 41.6670 -103.1040 BLAN1 Missouri River near Blair NE 41.5340 -96.0960 BRON1 Missouri River at Brownville NE 40.3990 -95.6530 BVSN1 Sappa Creek near Beaver City NE 40.0470 -99.8900 CABN1 Harry Strunk Reservoir at Harry Strunk Reservoir NE 40.3500 -100.2200 CAMN1 Republican River at Cambridge NE 40.2850 -100.1460 CLBN1 Shell Creek at Columbus NE 41.5260 -97.2820 COZN1 Platte River near Cozad NE 40.8590 -99.9780 CRTN1 Big Blue River near Crete NE 40.5960 -96.9590 CULN1 Republican River at Culbertson NE 40.2347 -100.8777 DCTN1 Missouri River at Decatur NE 42.0070 -96.2410 DNCN1 Platte River near Duncan NE 41.3680 -97.4940 DRGN1 West Fork Big Blue River near Dorchester NE 40.7310 -97.1770 DWEN1 Little Blue River near Deweese NE 40.3500 -98.0590 EWIN1 Elkhorn River at Ewing NE 42.2712 -98.3337 FLLN1 Big Nemaha River near Falls City NE 40.0360 -95.5960 FRBN1 Little Blue River near Fairbury NE 40.1400 -97.1890 FULN1 Cedar River near Fullerton NE 41.3950 -98.0030 GBBN1 Wood River near Gibbon NE 40.7710 -98.7970 GELN1 Loup River near Genoa NE 41.4180 -97.7240 GEON1 Genoa-Beaver Creek at Genoa NE 41.4720 -97.7360 GRIN1 Platte River near Grand Island NE 40.8670 -98.2830 GRNN1 Salt Creek (ADAK1) near Greenwood NE 40.9660 -96.4500 GUIN1 Republican River at Guide Rock NE 40.0640 -98.3310 HAIN1 Arikaree River at Haigler NE 40.0291 -101.9694 HBCN1 Buffalo Creek near Haigler NE 40.0394 -101.8658 HBLN1 N F Big Nemaha River near Humboldt NE 40.1570 -95.9440 HDYN1 Republican River near Hardy NE 39.9920 -97.9310 HENN1 North Platte River at Henry NE 41.9900 -104.0490 HMRN1 Omaha Creek at Homer NE 42.3210 -96.4880 HOON1 Elkhorn River at Hooper NE 41.6250 -96.5500 ITHN1 Wahoo Creek at Ithaca NE 41.1440 -96.5360 KEAN1 Platte River near Kearney NE 40.6590 -99.0860 LCNN1 Salt Creek (ADAK1) at Lincoln NE 40.8470 -96.6820 LCWN1 Logan Creek near Wakefield NE 42.2769 -96.8617 LEWN1 North Platte River at Lewellen NE 41.3202 -102.1253 LOUN1 Platte River near Louisville NE 41.0150 -96.1580 LSON1 North Platte River at Lisco NE 41.4840 -102.6207 MCKN1 Republican River at McCook NE 40.1461 -100.6730 MICN1 North Platte River near Mitchell NE 41.9270 -103.8130 MKLN1 Missouri River near Maskell NE 42.7172 -96.9556 MKRN1 Republican River at McCook NE 40.1880 -100.6180 MNTN1 North Platte River near Minatare NE 41.7900 -103.5190 MRNN1 Missouri River at Niobrara NE 42.7617 -98.0278 MRPN1 Missouri River near Ponca NE 42.5750 -96.6833 MRVN1 Missouri River near Verdel NE 42.7889 -98.0803 NBDN1 Platte River near North Bend NE 41.4530 -96.7640 NEBN1 Missouri River at Nebraska City NE 40.6820 -95.8470 NFKN1 Elkhorn River near Norfolk NE 42.0040 -97.4250 NLIN1 Elkhorn River at Neligh NE 42.1300 -98.0270 NPSN1 South Platte River at North Platte NE 41.1000 -100.7737 NPTN1 North Platte River at North Platte NE 41.1750 -100.7527 OMHN1 Missouri River at Omaha NE 41.2590 -95.9220 ORNN1 Republican River near Orleans NE 40.1310 -99.5020 OVTN1 Platte River near Overton NE 40.6830 -99.5410 PALN1 Frenchman Creek at Palisade NE 40.3320 -101.1258 PASN1 Stinking Water Creek at Palisade NE 40.4020 -101.1258 PLGN1 Elkhorn River at Pilger NE 41.9960 -97.0580 PRCN1 North Fk Elkhorn River near Pierce NE 42.1490 -97.4780 REPN1 Republican River at Harlan Reservoir NE 40.0790 -99.1680 RIVN1 Wood River near Riverdale NE 40.7990 -99.1970 ROCN1 Salt Creek (ADAK1) at Roca NE 40.6580 -96.6650 RSON1 South Platte River at Roscoe NE 41.1260 -101.5760 RULN1 Missouri River at Rulo NE 40.0540 -95.4220 RVNN1 South Loup River at Ravenna NE 41.0120 -98.9120 RVRN1 Republican River near Riverton NE 40.0500 -98.7650 RVTN1 Thompson Creek at Riverton NE 40.1000 -98.7610 SMIN1 South Loup River at St. Michael NE 41.0310 -98.7400 SPKN1 Niobrara River near Sparks NE 42.9028 -100.3611 SPLN1 Middle Loup River near St. Paul NE 41.2000 -98.4500 SPUN1 North Loup River near St. Paul NE 41.2670 -98.4500 SRPN1 Big Blue River at Surprise NE 41.1010 -97.3100 SSCN1 Missouri River at Sioux City NE 42.4860 -96.4140 STMN1 Sappa Creek at Stamford NE 40.1310 -99.5540 STTN1 Republican River at Stratton NE 40.1411 -101.2291 SWDN1 Lincoln Creek at Seward NE 40.9160 -97.1450 SWRN1 Big Blue River near Seward NE 40.9030 -97.1110 SWTN1 Mud Creek at Sweetwater NE 41.0380 -98.9930 TYLN1 North Loup River at Taylor NE 41.7769 -99.3792 UEHN1 Logan Creek at Uehling NE 41.7130 -96.5220 UION1 Weeping Water Creek near Union NE 40.7930 -95.9110 VERN1 Ponca Creek at Verdel - Ponca Crk NE 42.8110 -98.1760 VRDN1 Niobrara River near Verdel NE 42.7400 -98.2240 WLBN1 Turkey Creek near Wilber NE 40.4800 -97.0120 WPNN1 Elkhorn River near West Point NE 41.8390 -96.7270 WTRN1 Elkhorn River at Waterloo NE 41.2940 -96.2830 BETN3 Ammonoosuc River at Bethlehem NH 44.2689 -71.6311 BRSN3 Smith River at Bristol NH 43.5678 -71.7483 CNWN3 Saco River near Conway NH 43.9908 -71.0914 DAVN3 Warner River at Davisville NH 43.2508 -71.7331 DLTN3 Connecticut River at Dalton NH 44.4200 -71.7200 FFLN3 Merrimack River at Franklin Dam NH 43.4675 -71.6614 FRJN3 Merrimack River at Franklin Jct. NH 43.4228 -71.6533 GFFN3 Piscataquog River at Goffstown NH 43.0200 -71.5300 GOFN3 Merrimack River at Goffs Falls NH 42.9477 -71.4639 HENN3 Contoocook River at Henniker NH 43.1527 -71.8566 NSHN3 Merrimack River at Nashua NH 42.7039 -71.4431 NSTN3 Connecticut River at North Stratford NH 44.7505 -71.6311 PLMN3 Pemigewasset River at Plymouth NH 43.7700 -71.6800 PTRN3 Contoocook River at Peterborough NH 42.8666 -71.9667 RUMN3 Baker River at Rumney NH 43.8000 -71.8500 SOHN3 Souhegan River at Merrimack NH 42.8500 -71.5000 SOUN3 Soucook River at Pembroke Road Near Concord 4E NH 43.2131 -71.4803 WCLN3 Sugar River at West Claremont NH 43.3875 -72.3625 WLBN3 Connecticut River at West Lebanon NH 43.6500 -72.3200 WLPN3 Connecticut River at North Walpole NH 43.1333 -72.4333 WOON3 Pemigewasset River at Woodstock NH 43.9833 -71.6833 BDKN4 Raritan River at Bound Brook NJ 40.5511 -74.5483 BKWN4 Millstone River at Blackwells Mills NJ 40.4750 -74.5761 BNTN4 Rockaway River at Boonton above reservoir NJ 40.9028 -74.4100 BONN4 Rockaway River at Boonton below reservoir NJ 40.8969 -74.3950 BVDN4 Delaware River at Belvidere NJ 40.8264 -75.0825 CAMN4 Passaic River at Chatham NJ 40.7261 -74.3897 ESTN4 Delaware River at Easton NJ 40.6917 -75.2042 FREN4 Delaware River at Frenchtown NJ 40.5278 -75.0667 HBRN4 South Branch Raritan River near High Bridge NJ 40.6833 -74.9500 HOHN4 Hohokus Brook at Ho-Ho-Kus NJ 40.9978 -74.1133 LODN4 Saddle River at Lodi NJ 40.8903 -74.0808 LTFN4 Passaic River at Little Falls NJ 40.8847 -74.2264 MAWN4 Ramapo River at Mahwah NJ 41.0981 -74.1628 MCPN4 Pequannock River at Macopin NJ 41.0181 -74.4019 MILN4 Passaic River near Millington NJ 40.6800 -74.5289 MNVN4 Raritan River at Manville NJ 40.5550 -74.5839 MOLN4 Molly Ann Brook at N. Haledon NJ 40.9531 -74.1850 MTGN4 Delaware River at Montague NJ 41.3092 -74.7953 NMLN4 Hackensack River at New Milford NJ 40.9483 -74.0269 PEBN4 North Branch Rancocas Creek at Pemberton NJ 39.9700 -74.6844 PINN4 Passaic River at Pine Brook NJ 40.8625 -74.3214 PPPN4 Pompton River at Pompton Plains NJ 40.9692 -74.2822 PPTN4 Ramapo River at Pompton Lakes NJ 40.9925 -74.2789 RGLN4 Delaware River at Riegelsville NJ 40.5944 -75.1900 RIVN4 Hackensack River at Rivervale NJ 40.9992 -73.9897 RRTN4 North Branch Raritan River near Raritan NJ 40.5706 -74.6792 RWDN4 Saddle River at Ridgewood NJ 40.9847 -74.0917 RWYN4 Rahway River at Rahway NJ 40.6189 -74.2833 SADN4 Upper Saddle at Saddle NJ 41.0589 -74.0953 SPGN4 Rahway River at Springfield NJ 40.6875 -74.3116 STTN4 South Branch Raritan River at Stanton NJ 40.5725 -74.8678 TACN4 Assunpink Creek at Trenton NJ 40.2242 -74.7494 THRN4 Third River at Bloomfield NJ 40.8000 -74.1877 TKSN4 Delaware River at Tocks Island NJ 41.0133 -75.0861 TREN4 Delaware River at Trenton NJ 40.2217 -74.7783 VRON4 Peckman River at Verona NJ 40.8450 -74.2355 WASN4 Delaware River at Washington Crossing NJ 40.2944 -74.8694 WNQN4 Wanaque River at Wanaque NJ 41.0442 -74.2933 WSDN4 Pascack River at Westwood NJ 40.9928 -74.0211 ABQN5 Rio Grande at Albuquerque NM 35.0892 -106.6800 ACMN5 Pecos River below Acme NM 33.5361 -104.3761 AICN5 Rio Chama above Abiquiu NM 36.2367 -106.4164 ARFN5 Animas River at Farmington NM 36.7214 -108.2014 ATCN5 Pecos River below Anton Chico NM 35.1789 -105.1083 ATSN5 Pecos River near Pecos River 4E Artesia NM 32.8400 -104.3200 BNDN5 Rio Puerco near Bernardo NM 34.4092 -106.8525 CAAN5 Rio Grande near Caballo NM 32.8850 -107.2920 CDRC2 Animas River above Cedar Hill NM 37.0381 -107.8736 CERN5 Rio Grande near Cerro NM 36.7400 -105.6831 CMMN5 Cimarron River above Cimarron NM 36.5197 -104.9783 CMTN5 Rio Chama near Chamita NM 36.0739 -106.1111 COLN5 Gallinas River above Colonias NM 35.1819 -104.8997 CPDN5 Pecos River at Carlsbad below Dark Canyon NM 32.4100 -104.2200 CRBN5 Rocky Arroyo at NW Carlsbad NM 32.5100 -104.3700 CSBN5 Pecos River near Pecos River 8NW Carlsbad NM 32.5100 -104.3300 CTDN5 Rio Grande above Cochiti Pueblo NM 35.6181 -106.3233 DACN5 Dark Canyon Draw at Carlsbad NM 32.4100 -104.2300 DARN5 Rio Hondo above Roswell NM 33.3492 -104.8514 DAWN5 Vermejo River above Dawson NM 36.6806 -104.7856 DAYN5 Rio Penasco at Dayton NM 32.7400 -104.4100 DIXN5 Embudo Creek below Dixon NM 36.2108 -105.9131 EMBN5 Rio Grande at Embudo NM 36.2056 -105.9636 FRMN5 San Juan River at Farmington NM 36.7228 -108.2250 GILN5 Gila River near Gila NM 33.0610 -108.5370 GOLN5 Mora River near Golondrinas NM 35.8908 -105.1631 GSFN5 San Francisco River below Glenwood NM 33.2467 -108.8797 GVRN5 Gila River near Virden NM 32.6480 -108.8450 JEZN5 Jemez River above Jemez Pueblo NM 35.6617 -106.7428 LBDN5 Rio Grande at Leasburg Dam NM 32.4790 -106.9190 LCVN5 Mora River at La Cueva NM 35.9408 -105.2497 LGNN5 Revuelto Creek near Logan NM 35.3414 -103.3936 LMDN5 Rio Ojo Caliente below La Madera NM 36.3497 -106.0436 LPSC2 La Plata River at State Line NM 36.9997 -108.1881 MIMN5 Mimbres River at Mimbres NM 32.8550 -107.9730 MLAN5 Black River near Black River 5W Malaga NM 32.2300 -104.1500 MLGN5 Pecos River near Pecos River 3SE Malaga NM 32.2100 -104.0200 MSLN5 Rio Grande near Mesilla NM 32.1640 -106.7310 OTWN5 Rio Grande at Otowi NM 35.8747 -106.1417 PCON5 Pecos River above Pecos NM 35.7083 -105.6819 PUEN5 Pecos River below Puerto De Luna NM 34.7300 -104.5244 RBFN5 Pecos River above Red Bluff Lake NM 32.0800 -104.0400 RCAN5 Rio Chama above Abiquiu NM 36.3183 -106.5972 RCEN5 Rio Chama below El Vado Dam NM 36.5800 -106.7233 RDBN5 Delaware River near Red Bluff Lake NM 32.0200 -104.0500 RGCN5 Galisteo Creek near Rosario NM 35.4647 -106.2136 RGRN5 Gila River near Redrock NM 32.7270 -108.6750 RIPN5 Rio Puerco above Guadalupe NM 35.6011 -107.1656 SFPN5 Rio Grande above San Felipe Pueblo NM 35.4442 -106.4397 SMFN5 Rio Grande near San Marcial NM 33.6806 -106.9917 SNAN5 Rio Grande near San Acacia NM 34.2564 -106.8883 SNCN5 Canadian River above Sanchez NM 35.6522 -104.3775 SPGN5 Cimarron River at Springer NM 36.3603 -104.5981 TBCN5 Rio Pueblo De Taos below Taos NM 36.3775 -105.6681 TJBN5 Rio Grande below Taos NM 36.3200 -105.7539 TLCN5 Tularosa Creek near Bent NM 33.1450 -105.8970 TYLN5 Canadian River at Taylor Springs NM 36.2958 -104.4933 AMRN2 Amargosa River at Beatty NV 36.9100 -116.7600 CMSN2 Humboldt River at Comus NV 40.9920 -117.3160 GRDN2 East Fork Carson River near Gardnerville NV 38.8450 -119.7036 HBMN2 Humboldt River at Battle Mountain NV 40.6670 -116.9303 HREN2 Humboldt River near Elko NV 40.9361 -115.6236 KIDN2 Las Vegas Wash below Henderson NV 36.1003 -114.9433 MBON2 Marys River near Charleston NV 41.5500 -115.3058 MOAN2 Muddy River near Moapa NV 36.7100 -114.6900 MTBN2 Marys River near Deeth NV 41.1540 -115.2703 MUDN2 Muddy River near Glendale NV 36.6400 -114.5400 MVEN2 Meadow Valley Wash near Ursine NV 38.0000 -114.2100 MVYN2 Meadow Valley Wash near Caliente NV 37.5600 -114.5600 PALN2 Humboldt River at Palisade NV 40.6069 -116.2014 STWN2 Carson River near Carson City NV 39.1078 -119.7122 TRRN2 Truckee River at Reno NV 39.5303 -119.7947 VISN2 Truckee River at Vista NV 39.5206 -119.7000 VRON2 Virgin River near Overton NV 36.5800 -114.3200 ALBN6 Hudson River at Albany NY 42.6461 -73.7472 ARTN6 Black River at Watertown NY 43.9800 -75.9200 ASEN6 Esopus Creek at Ashokan Reservoir East NY 41.9700 -74.1600 ASFN6 East Branch of the Ausable River at Au Sable Forks NY 44.4333 -73.7000 AUON6 Owasco Outlet at Auburn NY 42.9322 -76.5653 AVON6 Genesee River at Avon NY 42.9177 -77.7575 BAIN6 Susquehanna River at Bainbridge NY 42.2914 -75.4767 BKBN6 Schoharie Creek at Breakabeen NY 42.5369 -74.4108 BNGN6 Susquehanna River at Binghamton NY 42.0936 -75.9147 BOON6 Black River at Boonville NY 43.5116 -75.3069 BRTN6 Schoharie Creek at Burtonsville NY 42.8000 -74.2697 BRYN6 Delaware River at Barryville NY 41.5089 -74.9861 BTTN6 Battenkill at Battenville NY 43.1063 -73.4125 BTVN6 Tonawanda Creek at Batavia NY 43.0302 -78.1692 CANN6 West Branch Delaware River at Cannonsville Dam NY 42.0700 -75.3700 CCRN6 Delaware River at Callicoon NY 41.7567 -75.0578 CHAN6 Grass River at Chase Mills NY 44.8467 -75.0781 CHEN6 Chemung River at Elmira NY 42.0865 -76.8011 CHRN6 Black Creek at Churchville NY 43.1005 -77.8825 CINN6 Otselic River at Cincinnatus NY 42.5411 -75.9000 CKFN6 Beaver Kill at Cooks Falls NY 41.9464 -74.9797 CKLN6 Susquehanna River at Conklin NY 42.0353 -75.8033 CMGN6 Chemung River at Chemung NY 42.0022 -76.6350 CMPN6 Cohocton River near Campbell NY 42.2525 -77.2169 CNJN6 Canajoharie Creek near Canajoharie NY 42.8761 -74.6033 CNNN6 West Branch Delaware River at Cannonsville Reservoir NY 42.0700 -75.3700 CNON6 Chenango River near Chenango Forks NY 42.2181 -75.8486 COHN6 Mohawk River at Cohoes NY 42.7853 -73.7081 CRNN6 Chemung River at Corning NY 42.1464 -77.0578 CRTN6 Tioughnioga River at Cortland NY 42.6028 -76.1597 CZRN6 Great Chazy River at Perry Mills NY 45.0000 -73.5014 DDMN6 Mohawk River at Delta Dam NY 43.2700 -75.4300 DLGN6 East Canada Creek at Dolgeville NY 43.1014 -74.7708 DRDN6 Keuka Outlet at Dresden NY 42.6803 -76.9542 DWNN6 East Branch Delaware River at Pepacton Dam NY 42.0800 -74.9700 EAGN6 Hoosic River at Eagle Bridge NY 42.9300 -73.3700 EBZN6 Cazenovia Creek at Ebenezer NY 42.8300 -78.7800 ESDN6 Ouleout Creek at East Sidney Dam NY 42.3300 -75.2300 FLCN6 Chadakoin River at Falconer NY 42.1125 -79.2042 FLLN6 Fall Creek at Ithaca NY 42.4532 -76.4731 FSHN6 East Branch Delaware River at Fishs Eddy NY 41.9762 -75.1707 FTCN6 Salmon River at Fort Covington NY 44.9894 -74.4961 FTEN6 Hudson River at Fort Edward NY 43.2666 -73.5833 GBRN6 Schoharie Creek below Gilboa Dam at Gilboa NY 42.3972 -74.4508 GDVN6 Buffalo Creek at Gardenville NY 42.8500 -78.7500 GILN6 Schoharie Creek at Gilboa Dam NY 42.4000 -74.4497 GNEN6 Chenango River at Greene NY 42.3244 -75.7717 GNVN6 Seneca Lake at Geneva NY 42.8617 -76.9811 GOWN6 Cattaraugas Creek at Gowanda NY 42.4700 -78.9300 GRBN6 Oatka Creek at Garbutt NY 43.0100 -77.7917 GRDN6 Wallkill at Gardiner NY 41.6800 -74.1500 GVVN6 Mettawee River at Middle Granville NY 43.4700 -73.2800 HDLN6 Sacandaga River at Hadley NY 43.3113 -73.8677 HDYN6 Hudson River at Hadley NY 43.3188 -73.8447 HEUN6 Oswegatchie River at Heuvelton NY 44.6178 -75.4047 HGBN6 St. Regis River at Hogansburg NY 44.9739 -74.6656 HIKN6 West Canada Creek at Hinckley Dam NY 43.3200 -75.1200 HLEN6 West Branch Delaware River at Hale Eddy NY 42.0031 -75.3839 HOPN6 Sacandaga River at Hope NY 43.3527 -74.2708 HVLN6 West Branch Oswegatchie River near Harrisville NY 44.1856 -75.3311 ICYN6 Cayuga Lake at Ithaca NY 42.4458 -76.5125 INDN6 Indian River at Indian Lake NY 43.7500 -74.2800 INRN6 Indian River near Indian Lake NY 43.7563 -74.2675 KASN6 West Canada Creek at Kast Bridge NY 43.0689 -74.9886 KKLN6 Keuka Lake at Hammondsport NY 42.4061 -77.2189 LCSN6 Cayuga Creek at Lancaster NY 42.8800 -78.6500 LDYN6 Tioga River at Lindley NY 42.0287 -77.1322 LKGN6 Lake George at Rogers Rock NY 43.4222 -73.7097 LTLN6 Mohawk River at Little Falls NY 43.0147 -74.7797 MCKN6 Moose River at McKeever NY 43.6111 -75.1097 MCVN6 Hudson River at Mechanicville NY 42.8781 -73.6769 MMDN6 Genesee River at Mount Morris Dam NY 42.7330 -77.9075 MRNN6 Esopus Creek at Mount Marion NY 42.0333 -73.9667 MSSN6 Grass River at Massena NY 44.9339 -74.8933 MTRN6 Esopus Creek at Cold Brook NY 42.0141 -74.2711 NCKN6 Hudson River at North Creek NY 43.6611 -73.8969 NEIN6 Oneida Creek at Oneida NY 43.0973 -75.6390 NVRN6 Neversink River at Neversink Reservoir NY 41.8241 -74.6389 NWCN6 Hudson River near Newcomb NY 43.9667 -74.1181 OGSN6 Oswegatchie River at Ogdensburg NY 44.6319 -75.4761 OLNN6 Allegheny River at Olean NY 42.1200 -78.4200 ONDN6 Onondaga Creek at Syracuse NY 42.9830 -76.1510 OWSN6 Owasco Lake near Auburn NY 42.8989 -76.5381 PARN6 West Branch of the St. Regis River near Parishville NY 44.5986 -74.7375 PBGN6 Saranac River at Plattsburg NY 44.6700 -73.4700 PEPN6 East Branch Delaware River at Pepacton Dam NY 42.0800 -74.9700 PIEN6 Raquette River at Piercefield NY 44.2347 -74.5722 POUN6 Hudson River below Poughkeepsie NY 41.6333 -73.9200 PRTN6 Genesee River at Portageville NY 42.5702 -78.0425 PTVN6 Schoharie Creek at Prattsville NY 42.3280 -74.4422 RAMN6 Ramapo River at Ramapo NY 41.1403 -74.1689 RAPN6 Tonawanda Creek at Rapids NY 43.0930 -78.6364 RCKN6 Unadilla River at Rockdale NY 42.3778 -75.4064 RHRN6 Genesee River at Rochester NY 43.1800 -77.6300 RONN6 Rondout Creek at Rondout Rsvr NY 41.7992 -74.4300 ROSN6 Rondout Creek at Rosendale NY 41.8500 -74.0800 ROUN6 Lake Champlain/Richelieu River at Rouses Point NY 44.9800 -73.3700 RVRN6 Schroon River at Riverbank NY 43.6111 -73.7361 SACN6 Sacandaga River at Conklingville - Gt Sac Lk NY 43.3153 -73.9264 SCBN6 Seneca River below Mud Lock NY 42.9525 -76.7358 SCHN6 Mohawk River at Schenectady NY 42.8250 -73.9200 SFFN6 Ramapo River at Suffern NY 41.1183 -74.1606 SHBN6 Chenango River at Sherburne NY 42.6786 -75.5108 SLMN6 Allegheny River at Salamanca NY 42.1564 -78.7156 SUFN6 Mahwah River at Suffern NY 41.1408 -74.1169 SYLN6 Hudson River at Schuylerville NY 43.1125 -73.5783 TENN6 Tenmile River near Gaylordsville NY 41.6666 -73.5333 TRBN6 Mohawk River at Tribes Hill NY 42.9464 -74.2886 TRYN6 Hudson River at Troy NY 42.7522 -73.6894 UCAN6 Mohawk River at Utica NY 43.1086 -75.2222 UNDN6 Susquehanna River at Unadilla NY 42.3217 -75.3169 VSTN6 Susquehanna River at Vestal NY 42.0908 -76.0564 WAPN6 Wappingers Creek at Wappinger Falls NY 41.6500 -73.8800 WCRN6 Canisteo River at West Cameron NY 42.2222 -77.4181 WILN6 Ellicott Creek below Williamsville NY 42.9788 -78.7887 WLLN6 Genesee River at Wellsville NY 42.1222 -77.9575 WTFN6 Hudson River near Waterford NY 42.7886 -73.6744 WTHN6 Lake Champlain north of Whitehall NY 43.5500 -73.4000 WVYN6 Susquehanna River near Waverly NY 41.9848 -76.5011 ATHO1 Hocking River at Athens OH 39.3289 -82.0878 BIVO1 Sandy Creek at Bolivar Dam Pool OH 40.6489 -81.4325 BVLO1 Paint Creek at Bourneville OH 39.2636 -83.1669 CCNO1 Ohio River at Cincinnati OH 39.0944 -84.5100 CDIO1 Wills Creek at Cambridge OH 40.0144 -81.5872 CHCO1 Scioto River at Chillicothe OH 39.3300 -82.9600 CIRO1 Scioto River at Circleville OH 39.6014 -82.9553 COLO1 Scioto River at Columbus (Frank Rd) OH 39.9000 -83.0000 CPBO1 Maumee River at Napoleon OH 41.3875 -84.1225 CSHO1 Muskingum River below Coshocton OH 40.2483 -81.8730 DBVO1 Big Darby Creek at Darbyville OH 39.7006 -83.1103 DEFO1 Maumee River at Defiance OH 41.2792 -84.3867 DFCO1 Auglaize River near Defiance Pwr Dam OH 41.2375 -84.3992 DTNO1 Great Miami River at Dayton OH 39.7653 -84.1975 ELRO1 Black River at Elyria OH 41.3803 -82.1047 ENTO1 Hocking River at Enterprise OH 39.5650 -82.4747 ESTO1 Little Beaver Creek at East Liverpool OH 40.6758 -80.5408 FDYO1 Blanchard River at Findlay OH 41.0558 -83.6881 FFMO1 Sandusky River near Fremont - USGS OH 41.3078 -83.1589 FREO1 Sandusky River at Fremont OH 41.3078 -83.1589 FTJO1 Auglaize River at Ft. Jennings OH 40.9486 -84.2661 GRRO1 Maumee River at Grand Rapids OH 41.4200 -83.8700 HAMO1 Great Miami River at Hamilton OH 39.3911 -84.5722 HANO1 Ohio River at Hannibal L&D OH 39.6669 -80.8700 INDO1 Cuyahoga River at Independence OH 41.3953 -81.6300 KILO1 Killbuck Creek at Killbuck OH 40.4811 -81.9864 KIMO1 Little Miami River at Kings Mills OH 39.3500 -84.2500 KIRO1 West Branch Mahoning River at Kirwan Reservoir OH 41.1500 -81.0833 KITO1 West Branch Mahoning River below M J Kirwan Dam OH 41.1500 -81.0667 LARO1 Scioto River at Larue OH 40.5744 -83.3875 LEAO1 Mahoning River at Leavittsburg OH 41.2392 -80.8808 LLMO1 Little Miami River near Spring Valley OH 39.5833 -84.0303 MBGO1 Great Miami River below Miamisburg OH 39.6400 -84.2897 MCCO1 Muskingum River at McConnelsville Old Lock 7 OH 39.6539 -81.8569 MELO1 Ohio River at Meldahl Dam OH 38.7950 -84.1517 MFLO1 Sunday Creek at Milfield OH 39.4298 -82.1008 MIAO1 Great Miami River at Miamitown OH 39.2000 -84.6997 MILO1 Huron River at Milan OH 41.3011 -82.6100 MISO1 Mosquito Creek at Mosquito Creek Lake OH 41.3833 -80.7500 MLGO1 Little Miami River at Milford OH 39.1714 -84.2981 MLNO1 Tuscarawas River at Massillon OH 40.7703 -81.5242 MONO1 St. Joseph River OH/IN at Montpelier OH 41.5894 -84.6125 MRTO1 Ohio River near Marietta 2SW OH 39.3833 -81.4833 MSQO1 Mosquito Creek below Mosquito Creek Lake OH 41.3000 -80.7667 MTAO1 Ohio River at Marietta Pumphouse OH 39.4104 -81.4579 MVEO1 Kokosing River at Mt Vernon OH 40.4056 -82.3000 NCTO1 Tuscarawas River at Newcomerstown OH 40.2613 -81.6091 NEAO1 Licking River (OH) below Newark (Stadden Bridge) OH 40.0555 -82.3338 NHSO1 Nimishillen Creek at North Industry OH 40.7342 -81.3522 NILO1 Mahoning River at Niles OH 41.1725 -80.7572 NWPO1 Tuscarawas River at New Philadelphia OH 40.4808 -81.4483 NWTO1 Mahoning River at Lake Milton OH 41.1272 -80.9778 OLPO1 Cuyahoga River at Old Portage OH 41.1356 -81.5472 OTTO1 Blanchard River at Ottawa OH 41.0158 -84.0500 PERO1 East Fork Little Miami River at Perintown OH 39.1300 -84.2300 PKTO1 Scioto River at Piketon OH 39.0706 -83.0197 PNVO1 Grand River at Painesville OH 41.7189 -81.2281 PORO1 Ohio River at Portsmouth OH 38.7500 -83.0000 PRGO1 Scioto River at Prospect OH 40.4194 -83.1972 PRIO1 Mahoning River below Lake Milton at Pricetown OH 41.1333 -80.9667 RFDO1 St. Marys River near Rockford OH 40.6947 -84.6467 RNOO1 Ohio River at Willow Island Lock OH 39.3617 -81.2850 SBVO1 Ohio River at Steubenville OH 40.3583 -80.6111 SIDO1 Great Miami River at Sidney OH 40.2869 -84.1500 SPRO1 Mad River at Springfield OH 39.9200 -83.8700 STRO1 Tiffin River at Stryker OH 41.5044 -84.4297 TIFO1 Sandusky River at Tiffin OH 41.1144 -83.1803 UPPO1 Sandusky River near Upper Sandusky OH 40.8506 -83.2564 URVO1 Stillwater Creek at Uhrichsville OH 40.4055 -81.3438 VERO1 Vermilion River near Vermilion OH 41.3819 -82.3167 WBYO1 Chagrin River at Willoughby OH 41.6308 -81.4025 WDVO1 Portage River at Woodville OH 41.4494 -83.3614 WLVO1 Ohio River at Wellsville OH 40.5969 -80.6555 WRNO1 Mahoning River at Warren OH 41.2339 -80.8225 WRTO1 Olentangy River at Worthington OH 40.1103 -83.0319 WTVO1 Maumee River at Waterville OH 41.5000 -83.7128 WUNO1 Ohio Brush Creek at West Union OH 38.8036 -83.4211 YGWO1 Mahoning River at Youngstown OH 41.1050 -80.6628 ZANO1 Muskingum River at Zanesville OH 39.9333 -82.0167 ALXO2 Washita River at Alex OK 34.9260 -97.7740 ANDO2 Washita River at Anadarko OK 35.0840 -98.2430 ANTO2 Kiamichi River near Antlers OK 34.2430 -95.6050 ARCT2 Red River at Arthur City OK 33.8760 -95.5020 AVAO2 Salt Fork River near Alva OK 36.8150 -98.6480 AVTO2 Bird Creek at Avant OK 36.4850 -96.0600 BFFO2 Cimarron River near Buffalo OK 36.8520 -99.3150 BGSO2 Deep Fork River near Beggs OK 35.6390 -96.0680 BLKO2 Chikaskia River near Blackwell OK 36.8110 -97.2770 BLUO2 Blue River near Blue OK 33.9970 -96.2410 BMSO2 Chikaskia River near Braman OK 35.9506 -97.3939 BRIO2 Canadian River near Bridgeport OK 35.5440 -98.3180 BVLO2 Caney River at Bartlesville OK 36.7550 -95.9720 BVRO2 Beaver River at Beaver OK 36.8200 -100.5200 CAGO2 Washita River near Carnegie OK 35.1170 -98.5640 CARO2 North Fork Red River near Carter OK 35.1680 -99.5070 CCKO2 Washita River near Chickasha OK 35.0860 -97.9600 CHYO2 Washita River near Cheyenne OK 35.6260 -99.6680 CLIO2 Washita River near Clinton OK 35.5310 -98.9670 CLRO2 Verdigris River near Claremore OK 36.3070 -95.6980 CLVO2 Canadian River near Calvin OK 34.9780 -96.2430 CNEO2 Clear Boggy Creek near Caney OK 34.2530 -96.2050 COMO2 Neosho River near Commerce OK 36.9290 -94.9570 CVLO2 Caney River near Collinsville OK 36.3950 -95.8110 DOVO2 Cimarron River near Dover OK 35.9520 -97.9140 DURO2 Washita River near Dickson OK 34.2330 -96.9760 EAGO2 Mountain Fork near Eagletown OK 34.0417 -94.6197 ELDO2 Baron Fork at Eldon OK 35.9210 -94.8330 ELNO2 North Canadian River near El Reno OK 35.5630 -97.9570 FRSO2 Muddy Boggy Creek near Farris OK 34.2710 -95.9120 GBRO2 Beaver River at Goodwell OK 36.6900 -101.6900 GCCO2 Coldwater Creek at Guymon OK 36.5700 -101.3800 GLOO2 Glover River at Glover OK 34.0975 -94.9019 GSVT2 Red River near Gainesville OK 33.7280 -97.1600 GTRO2 Cimarron River near Guthrie OK 35.9210 -97.4260 GUCO2 Cottonwood Creek at Guthrie OK 35.8790 -97.4310 HEAO2 North Fork Red River near Headrick OK 34.6380 -99.1030 HRHO2 North Canadian River near Harrah OK 35.5000 -97.1940 HSKO2 Arkansas River near Haskell OK 35.8210 -95.6390 HVRO2 Wildhorse Creek near Hoover OK 34.5410 -97.2470 IDBO2 Little River near Idabel OK 33.9411 -94.7583 INOO2 Verdigris River near Inola OK 36.1650 -95.6190 JNKO2 Polecat Creek near Jenks OK 36.0100 -95.9930 KENO2 Cimarron River at Kenton OK 36.9300 -102.9800 KNGO2 Kingfisher Creek at Kingfisher OK 35.8830 -97.9450 KNRO2 Uncle John Creek at Kingfisher OK 35.8600 -97.9220 KNSO2 Flint Creek near Kansas OK 36.1860 -94.7070 LEPO2 Verdigris River near Lenapah OK 36.8510 -95.5850 LNDO2 Washita River at Lindsay OK 34.8180 -97.5980 MGMO2 Salt Fork Red River at Mangum OK 34.8580 -99.5080 MKGO2 Arkansas River at Muskogee OK 35.7690 -95.2990 NKHO2 Little Washita River near Ninnekah OK 34.9630 -97.8960 OKBO2 North Canadian River at Oklahoma City OK 35.5660 -97.3670 ONEO2 Cimarron River near Okeene OK 36.1200 -98.1680 OWSO2 Bird Creek near Owasso OK 36.2480 -95.8670 PANO2 Poteau River near Panama OK 35.1630 -94.6470 PAWO2 Black Bear Creek at Pawnee OK 36.3440 -96.7990 PCYO2 Arkansas River near Ponca City OK 36.6990 -96.9220 PLVO2 Washita River near Pauls Valley OK 34.7550 -97.2510 PRCO2 Canadian River at Purcell OK 35.0140 -97.3470 PRKO2 Cimarron River near Perkins OK 35.9590 -97.0330 PTAO2 Poteau River at Poteau OK 35.0600 -94.6030 QUAO2 Spring River near Quapaw OK 36.9340 -94.7460 RAMO2 Caney River near Ramona OK 36.5090 -95.8420 RLSO2 Arkansas River at Ralston OK 36.5040 -96.7280 RNDO2 Deep Red Creek near Randlett OK 34.2210 -98.4530 RPDO2 Palo Duro Creek at Hardesty OK 36.5400 -101.0800 SASO2 Little River near Sasakwa OK 34.9650 -96.5120 SEIO2 North Canadian River near Seiling OK 36.1830 -98.9210 SPCO2 Polecat Creek near Sapulpa OK 35.9880 -96.0820 SPEO2 Bird Creek near Sperry OK 36.2780 -95.9540 SWDO2 Cottonwood Creek near Seward OK 35.8140 -97.4780 SWNO2 North Canadian River near Shawnee OK 35.3330 -96.9590 TALO2 Illinois River near Tahlequah OK 35.9230 -94.9120 TCMO2 Little River near Tecumseh OK 35.1730 -96.9320 TGAO2 Canadian River near Taloga OK 36.0520 -98.9670 TLSO2 Arkansas River near Tulsa OK 36.1410 -96.0060 TONO2 Salt Fork River at Tonkawa OK 36.6720 -97.3090 TRLO2 Red River near Terral OK 33.8790 -97.9340 UNIO2 Canadian River near Union City OK 35.3640 -97.9310 WAKO2 Beaver Creek near Waurika OK 34.1630 -98.0030 WANO2 Cimarron River near Waynoka OK 36.5170 -98.8790 WATO2 North Canadian River near Watonga OK 35.8120 -98.4210 WDWO2 North Canadian River at Woodward OK 36.4490 -99.3990 WETO2 North Canadian River near Wetumka OK 35.2660 -96.2060 WLTO2 East Cache Creek other Walters (USGS) OK 34.3620 -98.2820 WTTO2 Illinois River near Watts OK 36.1300 -94.5720 YUKO2 North Canadian River near Yukon OK 35.5400 -97.7420 AGNO3 Rogue River near Agness OR 42.5810 -124.0580 ALBO3 Willamette River at Albany OR 44.6390 -123.1060 APRO3 Applegate River near Applegate OR 42.2500 -123.1330 ARWO3 Applegate River near Wilderville OR 42.3500 -123.4000 ASTO3 Columbia River at Astoria OR 46.2080 -123.7670 AURO3 Pudding River at Aurora OR 45.2330 -122.7490 AZAO3 Cow Creek near Azalea OR 42.8250 -123.1780 BEAO3 Nestucca River near Beaver OR 45.2670 -123.8460 BENO3 Deschutes River at Benham Falls OR 43.9303 -121.4108 BFLO3 Bull Run River at Lower Flume nr Brightwood OR 45.4706 -121.8653 BRBO3 Breitenbush River near Detroit OR 44.7528 -122.1278 BTYO3 Sprague River near Beatty OR 42.4470 -121.2380 CANO3 Molalla River near Canby OR 45.2440 -122.6860 CHTO3 Chetco River near Brookings OR 42.1240 -124.1860 CKKO3 Crooked River near Terrebone OR 44.3583 -121.1178 COCO3 Clackamas River near Oregon City OR 45.3790 -122.5760 COGO3 Cow Creek above Azalea OR 42.8230 -123.1250 COQO3 Coquille River at Coquille OR 43.1710 -124.1880 CORO3 Willamette River at Corvallis OR 44.5660 -123.2570 CRAO3 Deschutes River below Crane Prairie Reservoir OR 43.7536 -121.7825 CREO3 Crescent Creek at Crescent Lake OR 43.5031 -121.9722 CRPO3 Crooked River above Prineville Reservoir OR 44.1778 -120.5833 CSDI1 Payette River at Cascade Dam OR 44.5167 -116.0500 CWMO3 Cow Creek at Glendale OR 42.7430 -123.4400 DEBO3 Deschutes River below Bend OR 44.0831 -121.3067 DEEO3 Deer Creek at Roseburg OR 43.2200 -123.2700 DETO3 N Santiam River at Detroit Lake OR 44.7222 -122.2486 DLLO3 Tualatin River near Dilley OR 45.4750 -123.1230 DONO3 Donner und Blitzen River near French Glen OR 42.7911 -118.8667 ECDO3 Elk creek near Drain OR 43.6400 -123.2990 EGLO3 Rogue River near Eagle Point OR 42.5260 -122.8610 EKTO3 Umpqua River near Elkton OR 43.5860 -123.5540 ELKO3 Elk Creek near Trail OR 42.6750 -122.7440 ESTO3 Clackamas River near Estacada OR 45.3010 -122.3540 EUGO3 Willamette River at Eugene OR 44.0500 -123.0830 FRMO3 Tualatin River at Farmington OR 45.4490 -122.9490 FSSO3 Nehalem River near Foss OR 45.7040 -123.7540 GIBO3 Umatilla River near Gibbon OR 45.7197 -118.3222 GLIO3 North Umpqua River near Glide OR 43.3170 -122.8170 GLNO3 West Fork Cow Creek near Glendale OR 42.8000 -123.6170 GRAO3 Rogue River at Grants Pass OR 42.4310 -123.3170 HARO3 Willamette River at Harrisburg OR 44.2710 -123.1720 HODO3 Hood River near Hood River OR 45.6547 -121.5494 IMNO3 Imnaha River at Imnaha OR 45.5622 -116.8331 JFFO3 Santiam River at Jefferson OR 44.7150 -123.0110 JHNO3 John Day River near John Day OR 44.4186 -118.9058 KAHO3 Warm Springs near Kahneeta Hot Springs OR 44.8567 -121.1486 KRBO3 Illinois River near Kerby OR 42.2320 -123.6640 LAPO3 Little Deschutes River near La Pine OR 43.6892 -121.5017 LGNO3 Grande Ronde River near Perry OR 45.3544 -118.1914 LSNO3 Little Sandy River near Bull Run OR 45.4156 -122.4156 MCGO3 Meacham Creek at Gibbon OR 45.6889 -118.3556 MCKO3 McKay Creek near Pendleton OR 45.6094 -118.7986 MCMO3 South Yamhill River at McMinnville OR 45.2060 -123.1810 MEHO3 N Santiam River at Mehama OR 44.7890 -122.6170 MFDO3 Bear Creek at Medford OR 42.3330 -122.8670 MNRO3 Long Tom River at Monroe OR 44.3131 -123.2953 MOCO3 McKenzie River at Outlet of Clear Lake OR 44.3611 -121.9944 MODO3 Deschutes River at Moody OR 45.6167 -120.9000 MONO3 North Fork John Day River near Monument OR 44.8150 -119.4306 MPLO3 Siuslaw River near Mapleton OR 44.0630 -123.8820 MYKO3 McKay Creek above Reservoir OR 45.5492 -118.7733 MYNO3 North Fk Coquille River near Myrtle Point OR 43.0710 -124.1060 MYPO3 South Fk Coquille River at Myrtle Point OR 43.0710 -124.1480 OCHO3 Ochoco Creek below Ochoco Reservoir OR 44.2994 -120.7264 OCUO3 Willamette River above Falls at Oregon City OR 45.3480 -122.6210 OKPO3 Oak Grove Fork above Powerplant Intake nr Estacada 24SE OR 45.0714 -121.9394 ORCO3 Willamette River below Falls at Oregon City OR 45.3580 -122.6110 OWYO3 Owyhee River at Owyhee Dam OR 43.6494 -117.2469 PDTO3 Umatilla River at Pendleton OR 45.6711 -118.7918 PDUO3 Umatilla River at W. Reservation Boundry OR 45.6717 -118.7356 PERO3 Deschutes River near Madras OR 44.7261 -121.2458 PHIO3 Marys River near Philomath OR 44.5260 -123.3330 PICO3 Butter Creek near Pine City OR 45.5444 -119.3111 POWO3 South Fk Coquille River at Powers OR 42.8920 -124.0690 PRTO3 Willamette River at Portland OR 45.5190 -122.6670 PRVO3 Crooked River near Prineville OR 44.1139 -120.7944 PWDO3 Powder River at Baker City OR 44.7683 -117.8306 RDLO3 Cow Creek near Riddle OR 42.9240 -123.4290 REEO3 Umpqua River at Reedsport OR 43.7040 -124.0940 ROMO3 Owyhee River at Rome OR 42.8672 -117.6644 RSBO3 South Umpqua River at Roseburg OR 43.2090 -123.3470 RUNO3 Bull Run River near Bull Run OR 45.4706 -121.8653 RYGO3 Rogue River below Gold Ray Dam OR 42.4380 -122.9860 SCRO3 Steamboat Creek near Glide OR 43.3500 -122.7300 SERO3 John Day River at Service Creek OR 44.7939 -120.0056 SHNO3 Columbia River at St. Helens OR 45.8640 -122.7960 SILO3 Siletz River at Siletz OR 44.7150 -123.8860 SLMO3 Willamette River at Salem OR 44.9440 -123.0420 SNDO3 Sandy River near Bull Run OR 45.4490 -122.2440 SPRO3 Mohawk River near Springfield OR 44.0930 -122.9560 SURO3 South Umpqua River near Riddle OR 42.9520 -123.3330 SUVO3 Luckiamute River near Suver OR 44.7830 -123.2330 SYCO3 Johnson Creek near Sycamore OR 45.4780 -122.5070 TIDO3 Alsea River near Tidewater OR 44.3860 -123.8306 TILO3 South Umpqua River near Tiller OR 42.9300 -122.9470 TLFO3 Tualatin River below Lee Falls nr Gaston 6WNW OR 45.5058 -123.2183 TLYO3 Clackamas River above Three Lynx Creek OR 45.1250 -122.0722 TRAO3 Trask River near Tillamook OR 45.4460 -123.7090 TRYO3 Grande Ronde River at Troy OR 45.9464 -117.4483 UMAO3 Umatilla River at Umatilla OR 45.9031 -119.3258 VALO3 Malheur River at Vale OR 43.9889 -117.2194 VIDO3 McKenzie River near Vida OR 44.1250 -122.4690 WINO3 North Umpqua River at Winchester Dam OR 43.2830 -123.3540 WMSO3 Williamson River below Chiloquin OR 42.5650 -121.8780 WNRO3 North Umpqua River near Winchester OR 43.2680 -123.4090 WSLO3 Tualatin River at West Linn OR 45.3510 -122.6750 WSNO3 South Umpqua River near Winston OR 43.1340 -123.3980 WTLO3 S. Santiam River at Waterloo OR 44.4990 -122.8220 YOKO3 Umatilla River near Yoakum OR 45.6772 -119.0358 ACMP1 Allegheny River at C.W. Bill Young L&D PA 40.5361 -79.8153 ALNP1 Jordan Creek at Allentown PA 40.6231 -75.4828 APAP1 Little Lehigh Creek at Allentown PA 40.5964 -75.4744 BDDP1 Monongahela River at Braddock L&D PA 40.3917 -79.8594 BEAP1 Beaver River near Beaver Falls PA 40.7628 -80.3133 BECP1 Bald Eagle Creek near Beech Creek Station PA 41.0810 -77.5500 BETP1 Lehigh River at Bethlehem PA 40.6153 -75.3792 BMBP1 Susquehanna River at Bloomsburg PA 40.9960 -76.4210 BREP1 Schuylkill River at Berne PA 40.5225 -75.9986 BUSP1 Kettle Creek at Bush Dam PA 41.3700 -77.9300 CDFP1 Brandywine Creek at Chadds Ford PA 39.8697 -75.5936 CEDP1 Pine Creek at Cedar Run PA 41.5520 -77.4480 CHRP1 Monongahela River at Charleroi L&D PA 40.1469 -79.8992 CHSP1 Chester Creek near Chester 3NW PA 39.8689 -75.4086 CLLP1 Youghiogheny River at Connellsville PA 40.0175 -79.5939 CLNP1 Allegheny River at Clinton L&D PA 40.7161 -79.5811 CNFP1 Youghiogheny River at Confluence PA 39.8333 -79.3667 COKP1 Clarion River near Cooksburg PA 41.3306 -79.2092 COWP1 Cowanesque River at Cowanesque Dam PA 41.9800 -77.1500 CPHP1 Yellow Breeches Creek near Camp Hill PA 40.2250 -76.8980 CRWP1 West Branch Susquehanna River at Curwensville Dam PA 40.9500 -78.5300 DANP1 Susquehanna River at Danville PA 40.9580 -76.6190 DSHP1 Ohio River at Dashields L&D PA 40.5486 -80.2066 DWNP1 East Branch Brandywine Creek below Downington PA 39.9667 -75.6667 ECMP1 Little Conemaugh River at East Conemaugh PA 40.3436 -78.8853 ELRP1 Allegheny River at Eldred PA 41.9633 -78.3864 ELZP1 Monongahela River at Elizabeth L&D PA 40.2622 -79.9014 FDLP1 Stonycreek River at Ferndale PA 40.2856 -78.9208 FREP1 Allegheny River at Freeport L&D PA 40.6838 -79.6680 FRKP1 Allegheny River at Franklin PA 41.3894 -79.8205 GRAP1 Perkiomen Creek at Graterford PA 40.2294 -75.4519 GYLP1 Monongahela River at Grays Landing L&D PA 39.8247 -79.9208 HARP1 Susquehanna River at Harrisburg PA 40.2550 -76.8860 HERP1 Swatara Creek near Hershey PA 40.2980 -76.6680 HGSP1 Conodoguinet Creek near Hogestown PA 40.2520 -77.0210 HTVP1 Swatara Creek at Harper Tavern PA 40.4030 -76.5780 HUJP1 Juniata River at Huntingdon PA 40.4850 -78.0190 HWYP1 Lackawaxen River at Hawley PA 41.4761 -75.1725 ILTP1 West Branch Susquehanna River at Milton PA 41.0190 -76.8650 JHNP1 Clarion River at Johnsonburg PA 41.4860 -78.6790 JHSP1 Conemaugh River at Johnstown PA 40.3414 -78.9261 JRSP1 West Branch Susquehanna River at Jersey Shore PA 41.2030 -77.2530 KARP1 West Branch Susquehanna River at Karthaus PA 41.1180 -78.1090 KTTP1 Allegheny River at Kittanning L&D PA 40.8183 -79.5300 LHTP1 Lehigh River at Lehighton PA 40.8292 -75.7056 LHVP1 West Branch Susquehanna River at Lock Haven PA 41.1380 -77.4420 LNCP1 Conestoga River at Lancaster PA 40.0500 -76.2780 LNGP1 Neshaminy Creek at Langhorne PA 40.1739 -74.9572 LOYP1 Loyalsock Creek at Loyalsockville PA 41.3250 -76.9130 LWBP1 West Branch Susquehanna River at Lewisburg PA 40.9680 -76.8740 LWSP1 Juniata River at Lewistown PA 40.5940 -77.5830 LWVP1 Cowanesque River near Lawrenceville PA 42.0000 -77.1400 MAXP1 Monongahela River at Maxwell L&D PA 40.0008 -79.9605 MCYP1 West Branch Susquehanna River near Muncy PA 41.2060 -76.8010 MEDP1 French Creek at Meadville PA 41.6325 -80.1597 MFDP1 Tioga River at Mansfield PA 41.7500 -77.0800 MGYP1 Ohio River at Montgomery L&D PA 40.6483 -80.3850 MHPP1 Susquehanna River at Meshoppen PA 41.6072 -76.0506 MIDP1 Swatara Creek at Middletown PA 40.2000 -76.7170 MNSP1 Brodhead Creek at Minisink Hills PA 40.9986 -75.1431 MONP1 Towanda Creek at Monroeton PA 41.7069 -76.4850 MOSP1 Allegheny River at Mosgrove L&D PA 40.8944 -79.4769 MPLP1 Juniata River at Mapleton Depot PA 40.3920 -77.9350 MRTP1 Susquehanna River at Marietta PA 40.0540 -76.5310 MTGP1 West Branch Susquehanna River at Montgomery PA 41.1690 -76.8750 MTMP1 Delaware River at Matamoras/Port Jervis PA 41.3706 -74.6974 NATP1 Allegheny River at Natrona L&D PA 40.6136 -79.7188 NCSP1 Shenango River at New Castle PA 41.0177 -80.3627 NHPP1 Delaware River at New Hope PA 40.3647 -74.9489 NPTP1 Juniata River at Newport PA 40.4780 -77.1290 NRSP1 Schuylkill River at Norristown PA 40.1167 -75.3500 OFRP1 Lackawanna River at Old Forge PA 41.3592 -75.7447 PADP1 Schuylkill River at Philadelphia PA 39.9678 -75.1889 PARP1 Allegheny River at Parker PA 41.1005 -79.6813 PLVP1 Tulpehocken Creek at Blue Marsh Dam PA 40.3700 -76.0200 PMRP1 Monongahela River at Point Marion L&D PA 39.7280 -79.9122 PNCP1 Penns Creek at Penns Creek PA 40.8670 -77.0490 PNXP1 Mahoning Creek at Punxsutawney PA 40.9438 -78.9672 POWO1 Ohio River at Powhatan Point PA 39.8605 -80.7994 PRYP1 Pohopoco Creek at Beltzville Dam PA 40.8494 -75.6383 PTNP1 Schuylkill River at Pottstown PA 40.2418 -75.6516 PTTP1 Ohio River at Pittsburgh PA 40.4416 -80.0133 RDRP1 Schuylkill River at Reading PA 40.3348 -75.9363 RDYP1 Clarion River at Ridgway PA 41.4208 -78.7361 RMRP1 Allegheny River at Rimer L&D PA 40.9561 -79.5472 ROVP1 West Branch Susquehanna River at Renovo PA 41.3240 -77.7510 RSSP1 Conewango Creek at Russell PA 41.9381 -79.1333 RTDP1 Raystown Branch Juniata River at Raystown Dam PA 40.4300 -78.0000 SBYP1 Susquehanna River at Sunbury PA 40.8350 -76.8260 SHOP1 Bush Kill at Shoemakers PA 41.0881 -75.0381 SHRP1 Allegheny River at Sharpsburg L&D PA 40.4875 -79.9153 SLYP1 Aughwick Creek at Shirleysburg PA 40.2800 -77.8900 SMDP1 Sherman Creek at Shermans Dale PA 40.3230 -77.1690 SNCP1 Red Bank Creek at St Charles PA 40.9944 -79.3944 SNNP1 Sinnemahoning Creek at Sinnemahoning PA 41.3170 -78.1030 SPKP1 Little Juniata River at Spruce Creek PA 40.6130 -78.1410 STSP1 Youghiogheny River at Sutersville PA 40.2400 -79.8066 STVP1 First Fork Sinnemahoning Creek at Stevenson Dam PA 41.4000 -78.0200 SWDP1 Conemaugh River at Seward PA 40.4191 -79.0263 SXTP1 Raystown Branch Juniata River at Saxton PA 40.2160 -78.2660 SYDP1 Bald Eagle Creek at Sayers Dam PA 41.0500 -77.6300 TGAP1 Tioga River at Tioga-Hammond Dam PA 41.9000 -77.1500 TGJP1 Tioga River at Tioga Junction PA 41.9500 -77.1200 TNKP1 Tunkhannock Creek at Tunkhannock PA 41.5583 -75.8950 TOWP1 Susquehanna River at Towanda PA 41.7653 -76.4411 VGFP1 Kiskiminetas River at Vandergrift PA 40.6044 -79.5522 WATP1 West Branch Susquehanna River at Watsontown PA 41.0820 -76.8640 WBRP1 Susquehanna River at Wilkes Barre PA 41.2509 -75.8808 WHKP1 Allegheny River at West Hickory PA 41.5763 -79.4105 WHNP1 Lehigh River near F.E. Walter Dam PA 41.1200 -75.7300 WIBP1 Frankstown Branch Juniata River at Williamsburg PA 40.4630 -78.2000 WILP1 West Branch Susquehanna River at Williamsport PA 41.2360 -76.9970 WNTP1 Lehigh River at Walnutport PA 40.7569 -75.6033 WRRP1 Allegheny River at Warren PA 41.8500 -79.1333 YGOP1 Youghiogheny River at Youghiogheny Dam Tailwater PA 39.8052 -79.3644 AIBP4 Rio De La Plata at Aibonito PR 18.1603 -66.2289 AREP4 Rio Grande De Arecibo above Arecibo PR 18.3986 -66.6914 ARGP4 Lago Dos Bocas at Utuado PR 18.3358 -66.6677 CAGP4 Rio Grande De Loiza at Caguas PR 18.2425 -66.0094 CIAP4 Rio Grande De Manati near Ciales PR 18.3239 -66.4600 COAP4 Rio Coamo at Coamo PR 18.0833 -66.3544 COMP4 Rio De La Plata at Comerio PR 18.2231 -66.2250 CORP4 Rio Cibuco below Corozal PR 18.3536 -66.3333 GSGP4 Rio Guanajibo at San German PR 18.0850 -67.0331 GURP4 Rio Gurabo at Gurabo PR 18.2583 -65.9681 GUTP4 Rio Gurabo below El Mango PR 18.2339 -65.8852 HORP4 Rio Guanajibo near Hormigueros PR 18.1433 -67.1492 MANP4 Rio Grande De Manati near Manati PR 18.4311 -66.5269 MOCP4 Rio Culebrinas near Moca PR 18.3617 -67.0925 MODP4 Rio Culebrinas near Aguada PR 18.3958 -67.1519 MORP4 Rio Grande De Manati near Morovis PR 18.2958 -66.4131 NASP4 Rio De La Plata below La Plata Dam PR 18.3458 -66.2381 PLOP4 Lago Loiza near Trujillo Alto PR 18.3303 -66.0167 RPEP4 Rio Piedras at El Senorial PR 18.3642 -66.0700 RPOP4 Rio Piedras at Hato Rey PR 18.4094 -66.0694 SEBP4 Rio Grande De Anasco near San Sebastian PR 18.2847 -67.0514 SLNP4 Rio Grande De Loiza at San Lorenzo PR 18.1858 -65.9617 TOAP4 Rio De La Plata near Toa Alta PR 18.4114 -66.2608 UTXP4 Rio Grande De Arecibo below Utuado PR 18.3019 -66.7042 VGBP4 Rio Cibuco at Vega Baja PR 18.4481 -66.3747 CRAR1 Pawtuxet River at Cranston RI 41.7508 -71.4456 WASR1 South Branch Pawtuxet River at Washington RI 41.0900 -71.5664 WOOR1 Blackstone River at Woonsocket RI 42.0061 -71.5036 BBGS1 Broad River near Blacksburg SC 35.1200 -81.5900 BCRS1 Black Creek (SC) near Quinby SC 34.2400 -79.7500 BLRS1 Broad River at Blair SC 34.4160 -81.4000 CEAS1 Congaree River at Carolina Eastman SC 33.8760 -81.0160 CHAS1 Saluda River at Chappells SC 34.1780 -81.8610 CHDS1 Savannah River at Thurmond Reservior SC 33.6500 -82.2000 CHES1 Pee Dee River at Cheraw SC 34.7080 -79.8750 CMDS1 Wateree River near Camden SC 34.2440 -80.6550 CNWS1 Waccamaw River near Conway SC 33.8300 -79.0600 COLS1 Congaree River at Columbia SC 33.9930 -81.0510 EFFS1 Lynches River at Effingham SC 34.0600 -79.7600 GALS1 Little Pee Dee River near Galivants Ferry SC 34.0600 -79.2500 GIVS1 Edisto River near Givhans Ferry SC 33.0300 -80.3900 GSLS1 Saluda River near Greenville SC 34.8400 -82.4800 HRTG1 Savannah River at Hartwell SC 34.3400 -82.8300 JAMS1 Santee River near Jamestown SC 33.3000 -79.6800 JCSS1 Savannah River at Jocassee Dam SC 34.9600 -82.9100 KEOS1 Savannah River at Keowee Dam SC 34.7100 -82.9200 KINS1 Black River at Kingstree SC 33.6500 -79.8200 MODS1 Stevens Creek near Modoc SC 33.7300 -82.1800 ORBS1 N. Fork Edisto River at Orangeburg SC 33.4890 -80.8730 PASS1 Broad River at Parr Shoals SC 34.2300 -81.3300 PDES1 Pee Dee River at Pee Dee SC 34.2000 -79.5500 PNVS1 Santee River at Lake Marion SC 33.4500 -80.1500 RBRS1 Savannah River at R. B. Russell Lake SC 34.0300 -82.6000 SANS1 Congaree River at Sandy Run SC 33.8090 -80.9020 WATS1 Wateree River at Wateree Dam SC 34.3300 -80.6900 WEPS1 Saluda River at West Pelzer SC 34.6400 -82.4500 WHMS1 Enoree River at Whitmire SC 34.5090 -81.5980 AGCS2 Silver Creek at Sioux Falls SD 43.6022 -96.7314 ANGS2 Cheyenne River near Angostura Reservoir SD 43.3431 -103.4378 ANNS2 Annie Creek near Lead SD 44.3269 -103.8938 ARGS2 Cold Brook Creek near Hot Springs SD 43.4750 -103.4833 ATNS2 James River near Ashton SD 44.9983 -98.4806 BEAS2 Beaver Creek (SD) near Buffalo Gap SD 43.4666 -103.3055 BEFS2 Belle Fourche River at Belle Fourche Reservoir SD 44.7369 -103.6741 BERS2 Bear-in-the-Lodge Creek near Wanbleee SD 43.5347 -101.7916 BFIS2 Belle Fourche River near Belle Fourche SD 44.7038 -103.8230 BIGS2 Rapid Creek at Big Bend SD 44.0550 -103.4166 BNNS2 Boxelder Creek near Nemo SD 44.1438 -103.4544 BNRS2 Boxelder Creek near Rapid City SD 44.1316 -103.2983 BOUS2 Bear Butte Creek near Galena SD 44.4122 -103.4861 BRCS2 Big Sioux River near Bruce SD 44.4678 -96.8872 BRKS2 Big Sioux River near Brookings SD 44.1800 -96.7490 BWSW4 Belle Fourche River at Wyoming-South Dakota State Line SD 44.7497 -104.0694 CACS2 Little Missouri River at Camp Crook SD 45.5481 -103.9711 CANS2 Big Sioux River near Canton SD 43.3894 -96.5231 CBKS2 Cold Brook Creek at Cold Brook Reservoir SD 43.4500 -103.4833 CBLS2 Missouri River at Chamberlain SD 43.8144 -99.3233 CCAS2 Choteau Creek near Avon SD 42.9233 -98.1058 CDHS2 Cold Brook Creek at Cottonwood Springs Reservoir SD 43.4358 -103.5644 CHRS2 Cheyenne River at Redshirt SD 43.6730 -102.8933 CLGS2 Rapid Creek at Cleghorn Springs SD 44.0588 -103.2969 CMBS2 James River near Columbia SD 45.6036 -98.3100 COSS2 Split Rock Creek at Corson SD 43.6160 -96.5650 CSHS2 Grand River near Cash SD 45.6488 -102.6408 CSWS2 Big Sioux River near Castlewood SD 44.7317 -97.0442 CTCS2 Castle Creek near Hill City SD 44.0136 -103.8300 CTTS2 Bad River near Cottonwood SD 43.9688 -101.7666 CYNS2 Rapid Creek above Canyon Lake near Rapid City SD 44.0527 -103.3113 DCCS2 Deadwood Creek at Central City SD 44.3686 -103.7652 DERS2 Big Sioux River near Dell Rapids SD 43.7900 -96.7450 DRFS2 Castle Creek at Deerfield Reservoir SD 44.0280 -103.7858 DVSS2 Vermillion River near Davis SD 43.2370 -96.9830 ECHS2 South Canyon near Rapid City SD 44.0927 -103.3269 EDGS2 Cheyenne River at Edgemont SD 43.3055 -103.8205 EKCS2 Elk Creek near Rapid City SD 44.2402 -103.1508 ELCS2 Elk Creek near Elm Springs SD 44.2458 -102.5027 EMSS2 Belle Fourche River near Elm Springs SD 44.3697 -102.5656 FARS2 Rapid Creek near Farmingdale SD 43.9419 -102.8533 FCRS2 Flandreau Creek near Flandreau SD 44.0625 -96.4875 FLAS2 Big Sioux River at Flandreau SD 44.0517 -96.5931 FORS2 James River near Forestburg SD 43.9740 -98.0710 FRDS2 Missouri River at Fort Randall Dam SD 43.0681 -98.5542 FRUS2 Belle Fourche River near Fruitdale SD 44.6908 -103.7372 FTHS2 Moreau River near Faith SD 45.1978 -102.1506 FTPS2 Bad River near Fort Pierre SD 44.3267 -100.3839 GCOS2 Grace Coolidge Creek near Custer SD 43.7611 -103.3636 GLNS2 Bear Butte Creek near Deadwood SD 44.3355 -103.6350 GNKS2 Grizzly Bear Creek near Keystone SD 43.8780 -103.4372 GPDN1 Missouri River at Gavins Point Dam SD 42.8489 -97.4817 GRAS2 Grand River near White Butte SD 45.8022 -102.3619 GRWS2 Missouri River near Greenwood SD 42.9053 -98.3494 GYVS2 Missouri River near Gayville SD 42.8503 -97.2200 HATS2 Hat Creek near Edgemont SD 43.2400 -103.5877 HAWS2 Rapid Creek below Hawthorn Ditch at Rapid City SD 44.0675 -103.1805 HERS2 Battle Creek at Hermosa SD 43.8280 -103.1955 HHDS2 Horsehead Creek at Oelrichs SD 43.1880 -103.2261 HOTS2 Fall River at Hot Springs SD 43.4305 -103.4758 HRSS2 Horse Creek above Vale SD 44.6522 -103.3663 HTFS2 Skunk Creek near Hartford SD 43.6358 -96.9000 HURS2 James River at Huron SD 44.3640 -98.1990 ID8S2 Turtle Creek at Redfield SD 44.8833 -98.5128 INLS2 Belle Fourche River above Belle Fourche SD 44.7013 -103.7333 IRIS2 Wild Irishman Gulch near Rapid City SD 44.0811 -103.3650 IRRS2 White River near Interior SD 43.6938 -101.9322 JHNS2 Rapid Creek above Johnson Siding SD 44.0822 -103.4422 JRMS2 James River near Mitchell SD 43.6590 -97.9190 JUDS2 Battle Creek above Keystone SD 43.9047 -103.4633 KDKS2 White River near Kadoka SD 43.7525 -101.5244 KSTS2 Spring Creek near Keystone SD 43.9791 -103.3402 LAKS2 Lake Creek above Refuge near Tuthill SD 43.0852 -101.6011 LBKS2 Lake Creek below Refuge near Tuthill SD 43.1469 -101.5141 LIES2 Grand River near Little Eagle SD 45.6578 -100.8178 LITS2 Little White River near Martin SD 43.1666 -101.6297 LSLS2 Little Spearfish Creek near Lead SD 44.3494 -103.9355 LVSS2 Little Vermillion River near Salem SD 43.7942 -97.3672 LWRS2 Little White River below White River SD 43.6013 -100.7494 MIDS2 Bad River near Midland SD 44.0669 -101.1600 MTVS2 Firesteel Creek near Mt. Vernon SD 43.7750 -98.2430 NEBS2 White River near Nebraska-South Dakota State Line SD 43.0130 -102.8352 OACS2 White River near Oacoma SD 43.7483 -99.5561 OSAS2 Battle Creek below Hermosa SD 43.7250 -102.9041 PACS2 Rapid Creek at Pactola Reservoir SD 44.0722 -103.4880 PAHS2 Keyapaha River near Keyapaha SD 43.1291 -100.1066 PCPS2 Platte Creek near Platte SD 43.3272 -98.9703 PIPS2 Blackpipe Creek near Belvidere SD 43.7577 -101.2278 PKRS2 Vermillion River near Parker SD 43.4150 -97.2050 PLNS2 Cheyenne River near Plainview SD 44.5317 -101.9297 PVRS2 Little Minnesota River near Peever SD 45.6014 -96.8717 RAVS2 Rapid Creek above Victoria Creek near Rapid City SD 44.0466 -103.3516 RCBS2 Rapid Creek below Pactola Dam SD 44.0766 -103.2419 RCYS2 Rapid Creek at Oshkosh Street SD 44.0858 -103.2419 RDWS2 Redwater Creek at Wyoming-South Dakota State Line SD 44.5738 -104.0483 RFDS2 James River near Redfield SD 44.9106 -98.4717 RGUS2 Reno Gulch near Hill City SD 43.9097 -103.6119 RMNS2 Vermillion River at East Fork near Ramona SD 44.1097 -97.3869 ROBS2 Elk Creek near Roubaix SD 44.2947 -103.5963 RSBS2 Little White River near Rosebud SD 43.3255 -100.8833 RSIS2 Rapid Creek at Silver City SD 44.0847 -103.5800 RUSS2 Battle Creek near Keystone SD 43.8725 -103.3361 RWRS2 Redwater River above Belle Fourche SD 44.6672 -103.8388 SBFS2 Belle Fourche River near Sturgis SD 44.5130 -103.1363 SCCS2 Skunk Creek near Chester SD 43.8342 -96.8322 SCOS2 James River near Scotland SD 43.1860 -97.6350 SEWS2 Rapid Creek below Sewage Plant near Rapid City SD 44.0233 -103.0952 SFDS2 James River near Stratford SD 45.2417 -98.3911 SFHS2 Spearfish Creek at Spearfish SD 44.4825 -103.8611 SFLS2 Big Sioux River at Sioux Falls 60th St. North SD 43.6010 -96.7400 SFMS2 Big Sioux River at Sioux Falls Maple Street SD 43.5731 -96.7639 SHAS2 Grand River at Shadehill Reservoir SD 45.7533 -102.2033 SHES2 Spring Creek above Sheridan Lake SD 43.9608 -103.4883 SIFS2 Skunk Creek at Sioux Falls SD 43.5340 -96.7910 SLNS2 Spearfish Creek near Lead SD 44.2978 -103.8672 SNDW4 Sand Creek near Beulah SD 44.5186 -104.0825 SPFS2 Spearfish Creek above Spearfish SD 44.4016 -103.8944 SPGS2 Missouri River at Springfield SD 42.8558 -97.8850 SUNS2 Sunday Gulch near Hill City SD 43.8694 -103.5819 SXFS2 Big Sioux River at Sioux Falls N. Cliff Avenue SD 43.5670 -96.7110 TDFS2 Spring Creek near Hill City SD 43.8661 -103.6233 VAES2 Whitewood Creek above Vale SD 44.6177 -103.4811 VAVS2 Victoria Creek above Victoria Dam nr Rapid City SD 44.0297 -103.4350 VBVS2 Victoria Creek below Victoria Dam nr Rapid City SD 44.0180 -103.3838 VERS2 Vermillion River at Vermillion SD 42.8170 -96.9240 VRPS2 Vermillion River near Parker SD 43.4450 -97.1090 VTLS2 Little White River near Vetal SD 43.1008 -101.2302 WASS2 Cheyenne River near Wasta SD 44.0811 -102.4008 WAVS2 Big Sioux River at Sioux Falls Western Ave. SD 43.5014 -96.7503 WBSS2 Big Sioux River near Watertown SD 44.9425 -97.1459 WBWS2 Big Sioux River at Watertown SD 44.8894 -97.1186 WCCS2 Willow Creek near Crooks SD 43.6308 -96.8269 WESS2 Elm River near Westport SD 45.6561 -98.4967 WEWS2 Keyapaha River at Wewala SD 43.0288 -99.7802 WHIS2 Moreau River near Whitehorse SD 45.2558 -100.8425 WHRS2 White River near White River SD 43.7138 -100.6847 WKAS2 Vermillion River near Wakonda SD 42.9910 -96.9640 WNWS2 Whitewood Creek near Whitewood SD 44.5416 -103.5711 WTRS2 Big Sioux River above Watertown SD 45.0061 -97.1647 WTWS2 Whitewood Creek above Whitewood SD 44.4422 -103.6288 YANS2 Missouri River at Yankton SD 42.8660 -97.3940 ARLT1 Loosahatchie River at Arlington TN 35.3100 -89.6400 ARTT1 Powell River near Arthur TN 36.5500 -83.6330 BOGT1 Obion River near Bogota TN 36.1400 -89.4300 BVRT1 Hatchie River near Bolivar TN 35.2700 -88.9900 CHAT1 Tennessee River at Chattanooga TN 35.0564 -85.3067 CHKT1 S. Chickamauga Creek near Chickamauga TN 35.0140 -85.2090 CKVT1 Cumberland River at Clarksville TN 36.5222 -87.3778 CLAT1 Cumberland River at Celina TN 36.5541 -85.5144 CNVT1 Duck River at Centerville TN 35.7842 -87.4600 COLT1 Duck River at Columbia TN 35.6181 -87.0325 CTHT1 Cumberland River at Carthage TN 36.2480 -85.9552 DOET1 Doe River at Elizabethton TN 36.3440 -82.2100 DYET1 North Fork Forked Deer River at Dyersburg TN 36.0300 -89.3900 EMBT1 Nolichucky River at Embreeville TN 36.1760 -82.4570 FRAT1 Harpeth River at Franklin TN 35.9200 -86.8655 FYTT1 Elk River near Fayetteville TN 35.1300 -86.5300 GERT1 Wolf River at Germantown TN 35.1200 -89.8000 HLST1 South Fork Forked Deer River near Halls TN 35.9300 -89.3900 HMLT1 Duck River near Hurricane Mills TN 35.9300 -87.7430 IRCT1 Shoal Creek near Iron City TN 35.0241 -87.5788 JKNT1 South Fork Forked Deer River at Jackson TN 35.6200 -88.8500 JOHT1 Tennessee River near New Johnsonville TN 36.0178 -88.0030 KINT1 Harpeth River near Kingston Springs TN 36.1219 -87.0988 KNOT1 Tennessee River at Knoxville TN 35.9500 -83.9000 LBVT1 Buffalo River near Lobelville TN 35.8127 -87.8341 MCGT1 Collins River near McMinnville TN 35.7255 -85.7294 MEMT1 Mississippi River at Memphis TN 35.1300 -90.0700 MUGT1 W. Fk. Stones River above Murfreesboro TN 35.8667 -86.4333 MYVT1 Little River at Maryville TN 35.7830 -83.8830 NAST1 Cumberland River at Nashville TN 36.1672 -86.7763 NEPT1 Pigeon River at Newport TN 35.9300 -83.1740 NOMT1 Obion River near Martin TN 36.4100 -88.8600 NWPT1 French Broad River near Newport TN 35.9830 -83.1660 OAKT1 Emory River at Oakdale TN 35.9830 -84.5580 OBNT1 Obion River near Obion TN 36.2400 -89.2200 PERT1 Tennessee River near Perryville TN 35.6247 -88.0389 PICT1 Tennessee River at Pickwick Landing TN 35.0719 -88.2458 PLKT1 Richland Creek above Pulaski TN 35.2141 -87.1014 PORT1 Red River near Port Royal TN 36.5547 -87.1419 PSPT1 Elk River near Prospect TN 35.0141 -86.9947 RLTT1 Hatchie River at Rialto TN 35.6400 -89.6000 RVLT1 Big Creek near Rogersville TN 36.4330 -82.9500 SAVT1 Tennessee River at Savannah TN 35.2247 -88.2600 SEVT1 Little Pigeon River above Sevierville TN 35.8780 -83.5770 SHVT1 Duck River near Shelbyville TN 35.4803 -86.4991 TAZT1 Clinch River above Tazewell TN 36.4330 -83.4000 TPTT1 Mississippi River at Tiptonville TN 36.3400 -89.5200 WHTT1 Sequatchie River near Whitwell TN 35.2060 -85.4960 ABAT2 Hubbard Creek below Albany TX 32.7330 -99.1400 ABTT2 Barton Creek at Loop 360 TX 30.2444 -97.8019 ABUT2 Bull Creek at Loop 360 near Austin TX 30.3719 -97.7850 ABYT2 Clear Fork Brazos River near Fort Griffin TX 32.9340 -99.2240 ACRT2 Colorado River at Austin TX 30.2444 -97.6942 ACTT2 North Texas Lakes at Waco Lake TX 31.5794 -97.1975 ADDT2 Buffalo Bayou at Addicks Reservoir TX 29.9133 -95.1403 AICT2 San Fernando Creek near Alice TX 27.7722 -98.0333 ALAT2 North Texas Lakes at Aquilla Lake TX 31.8997 -97.2025 ALKT2 Colorado River at Lake Austin TX 30.2942 -97.7850 ALOT2 Angelina River near Alto TX 31.6694 -94.9567 AMAT2 Canadian River at Amarillo TX 35.4800 -101.8700 AMIT2 Rio Grande at Lake Amistad TX 29.4700 -101.0300 AMTT2 Brazos River at Aspermont 10S TX 33.0080 -100.1800 ANBT2 Alpine Creek at Alpine TX 30.3600 -103.6600 AQIT2 Aquilla Creek above Aquilla TX 31.8444 -97.2011 AQLT2 Brazos River near Aquilla TX 31.8122 -97.2975 ARTT2 Running Water Draw-White River near Aspermont 13N TX 33.3330 -100.2380 ASRT2 Nueces River near Asherton TX 28.5000 -99.6817 ATBT2 Attoyac Bayou near Chireno TX 31.5042 -94.3042 ATIT2 Onion Creek at US 183 TX 30.1778 -97.6883 ATOT2 Neches River near Alto TX 31.5794 -95.1658 AYIT2 Ayish Bayou near San Augustine TX 31.3961 -94.1508 BACT2 Colorado River near Bay City TX 28.9406 -96.0122 BAKT2 Buffalo Bayou at Barker Reservoir TX 29.7697 -95.6469 BAMT2 Elm Creek at Ballinger TX 31.7490 -99.9480 BBST2 Buffalo Bayou at Houston TX 29.7600 -95.4083 BBZT2 Brazos River near Bryan TX 30.6267 -96.5439 BCNT2 Big Creek near Needville TX 29.4764 -95.8125 BDAT2 Medina River at Bandera TX 29.7236 -99.0697 BDWT2 North Texas Lakes at Bardwell Lake TX 32.2500 -96.6469 BEAT2 Neches River at Beaumont TX 30.1264 -94.0903 BEKT2 Sabine River near Beckville TX 32.3272 -94.3533 BEMT2 Mill Creek near Bellville TX 29.8808 -96.2050 BGET2 Big Sandy Creek (Brazos River Basin) above Breckenridge TX 32.6483 -99.0042 BICT2 Prairie Dog Town Fork Red River at Brice 6SW TX 34.6280 -100.9400 BKBT2 Red River near Burkburnett TX 34.1100 -98.5310 BKCT2 Devils River at Bakers Crossing near Juno TX 29.9639 -101.1440 BKLT2 Sabine River at Toledo Bend Reservoir TX 31.1736 -93.5648 BLET2 Leon River near Belton TX 31.0700 -97.4411 BLIT2 Colorado River near Ballinger TX 31.7150 -100.0260 BLNT2 North Texas Lakes at Belton Lake TX 31.1061 -97.4744 BNBT2 North Texas Lakes at Benbrook Lake TX 32.6506 -97.4483 BOLT2 San Bernard River near Boling TX 29.3133 -95.8939 BOQT2 Rio Grande at Boquillas TX 29.1900 -102.9600 BOYT2 West Fork Trinity River near Boyd TX 33.0853 -97.5583 BPRT2 North Texas Lakes at Lake Bridgeport TX 33.2228 -97.8717 BPST2 South Wichita River at Guthrie 6E TX 33.6220 -100.2090 BRAT2 Brady Creek at Brady TX 31.1380 -99.3350 BRNT2 Cibolo Creek near Boerne TX 29.8144 -98.7533 BRPT2 Big Sandy Creek (Trinity River Basin) near Bridgeport TX 33.2317 -97.6944 BRTT2 Colorado River at Bastrop TX 30.1044 -97.3192 BRVT2 Sabine River near Burkeville TX 31.0639 -93.5194 BSKT2 Beals Creek at Big Spring TX 32.2500 -101.4900 BSNT2 Big Sandy Creek near Big Sandy TX 32.6039 -95.0914 BSST2 San Saba River near Brady TX 31.0040 -99.2690 BTVT2 Nueces River at Bracketville TX 29.4725 -100.2360 BUDT2 Colorado River at Lake Buchanan TX 30.7514 -98.4183 BUMT2 Nolan River at Blum TX 32.1506 -97.4025 BVWT2 Sister Grove Creek near Blue Ridge TX 33.2944 -96.4828 BWDT2 Pecan Bayou at Brownwood TX 31.7320 -98.9740 BWRT2 Sabine River near Bon Wier TX 30.7469 -93.6083 CAAT2 Nueces River at Calallen TX 27.8764 -97.6256 CART2 Elm Fork Trinity River near Carrolton TX 32.9667 -96.9500 CBBT2 Rio Grande at Columbia Bridge TX 27.7064 -99.7469 CBST2 Colorado River at Columbus TX 29.7061 -96.5367 CBVT2 Nueces River near Bluntzer TX 27.9375 -97.7756 CCLT2 Lone Wolf Creek at Lone Wolf TX 32.4000 -100.8400 CCVT2 Coleto Creek at Highway 59 TX 28.7308 -97.1383 CDCT2 Colorado River at Colorado City TX 32.3900 -100.8900 CDET2 Rio Grande at Candelaria TX 30.1800 -104.6900 CDNT2 Canadian River at Canadian TX 35.9300 -100.3700 CDPT2 Pease River at Childress 17SE TX 34.2280 -100.0730 CFKT2 West Fork San Jacinto River near Conroe TX 30.2444 -95.4569 CHLT2 Prairie Dog Town Fork Red River at Childress 10N TX 34.5690 -100.1940 CHOT2 Frio River at Choke Canyon Dam TX 28.4667 -98.2500 CHVT2 South Concho River at Christoval TX 31.1870 -100.5020 CKDT2 Coleto Creek at Coleto Creek Reservoir TX 28.7308 -97.1647 CLBT2 North Concho River near Carlsbad TX 31.5930 -100.6370 CLDT2 East Fork San Jacinto River at Cleveland TX 30.3364 -95.1039 CMKT2 Devils River at Pafford Crossing near Comstock TX 29.6764 -101.0000 CMNT2 Little River at Cameron TX 30.8314 -96.9503 CNCT2 Frio River at Concan TX 29.4883 -99.7044 CNLT2 East Fork Trinity River near Crandall TX 32.6286 -96.4850 CODT2 Sandy Creek near Cordele TX 29.1600 -96.5461 COMT2 Guadalupe River at Comfort TX 29.9694 -98.8925 COPT2 South Sulphur River near Cooper TX 33.3564 -95.5947 COTT2 Nueces River at Cotulla TX 28.4261 -99.2397 CPPT2 North Sulphur River near Cooper TX 33.4747 -95.5879 CRFT2 Hog Creek near Crawford TX 31.6000 -97.3561 CRKT2 Trinity River near Crockett TX 31.3383 -95.6561 CRTT2 Southeast Texas Lakes at Houston County Lake TX 32.4067 -95.5694 CSTT2 Rio Grande at Castolon TX 29.1400 -103.5200 CTNT2 North Bosque River near Clifton TX 31.7858 -97.5677 CUET2 Guadalupe River at Cuero TX 29.0900 -97.3292 CUST2 East Fork Angelina River near Cushing TX 31.8600 -94.8231 CUTT2 Pecan Bayou near Cross Cutt TX 31.9730 -99.1300 CUZT2 Guadalupe River near Cuero TX 29.0900 -97.2392 CWRT2 Running Water Draw-White River at White River Lake TX 33.4560 -101.0930 DALT2 Trinity River at Dallas TX 32.7747 -96.8217 DAWT2 North Texas Lakes at Navarro Mills Lake TX 31.9575 -96.6892 DBYT2 Frio River near Derby TX 28.7364 -99.1444 DCJT2 Denton Creek near Justin TX 33.1189 -97.2903 DEET2 Deep Creek at Dunn TX 32.5700 -100.9100 DEKT2 Red River near "Dekalb, Pecan Point" TX 33.6831 -94.6942 DEYT2 East Yegua Creek near Dime Box TX 30.4072 -96.8172 DIBT2 Neches River near Diboll TX 31.1328 -94.8097 DLLT2 Leon River near DeLeon TX 32.1736 -98.5328 DLRT2 Rio Grande at Del Rio TX 29.3264 -100.9310 DMYT2 Middle Yegua Creek near Dime Box TX 30.3392 -96.9044 DNNT2 Brazos River near Dennis TX 32.6156 -97.9256 DSBT2 Sabana River near DeLeon TX 32.1139 -98.6053 DSNT2 North Texas Lakes at Lake Texoma TX 33.8181 -96.5722 DUPT2 Guadalupe River near Bloomington TX 28.6619 -96.9653 DWRT2 White Rock Creek at Dallas TX 32.8892 -96.7564 DWYT2 Sabine River at Deweyville TX 30.3036 -93.7436 DYNT2 Rio Grande at Dryden TX 29.8100 -102.1500 EAMT2 North Texas Lakes at Eagle Mountain Lake TX 32.8775 -97.4747 EAST2 Navasota River near Easterly TX 31.1700 -96.2975 EBBT2 San Bernard River at East Bernard TX 29.5331 -96.0561 EDNT2 Lavaca River near Edna TX 28.9597 -96.6861 ELMT2 San Antonio River at Elmendorf TX 29.2219 -98.3556 ELNT2 Rio Grande at El Indio TX 28.3500 -100.3200 ELTT2 Beaver Creek near Electra TX 33.9060 -98.9220 EPPT2 Rio Grande at Eagle Pass TX 28.7139 -100.5070 EPRT2 Rio Grande near El Paso TX 31.8030 -106.5400 EVDT2 Neches River at Evadale TX 30.3556 -94.0931 FACT2 San Antonio River near Falls City TX 28.9514 -98.0639 FAFT2 Los Olmos Creek at Falfurrias TX 27.2642 -98.1356 FALT2 Rio Grande at Falcon Lake TX 26.5597 -99.1700 FCTT2 Cibolo Creek near Falls City TX 29.0139 -97.9300 FFLT2 North Texas Lakes at Richland-Chambers Lake TX 32.0403 -96.2064 FLWT2 North Texas Lakes at Lake Worth TX 32.8200 -97.4700 FQGT2 Rio Grande near Fort Quitman TX 31.0860 -105.6080 FRBT2 Pedernales River at Fredericksburg TX 30.2203 -98.8694 FRHT2 North Texas Lakes at Lake Ray Hubbard TX 32.8000 -96.4958 FRRT2 San Casimiro Creek near Freer TX 27.9647 -98.9667 FWHT2 Clear Fork Trinity River at Fort Worth TX 32.7122 -97.3786 FWOT2 West Fork Trinity River at Fort Worth TX 32.7552 -97.3322 GAST2 Leon River at Gatesville TX 31.4328 -97.7617 GBCT2 Guadalupe River below Comal River at New Braunfels TX 29.6978 -98.1064 GBHT2 Greens Bayou at Houston TX 29.9181 -95.3067 GBLT2 Greens Bayou near Houston TX 29.8369 -95.2331 GBYT2 North Texas Lakes at Lake Granbury TX 32.3742 -97.6889 GDWT2 Sabine River near Gladewater TX 32.5269 -94.9600 GEOT2 San Gabriel River at Georgetown TX 30.5300 -97.6500 GETT2 San Gabriel River at "Georgetown, South Fork" TX 30.6256 -97.6908 GGLT2 San Gabriel River at Lake Georgetown TX 30.6675 -97.7106 GIVT2 Pecos River near Pecos River 4NW Girvin TX 31.1100 -102.4200 GLIT2 San Antonio River at Goliad TX 28.6494 -97.3844 GLLT2 Elm Fork Trinity River at Gainesville TX 33.6242 -97.1561 GLRT2 Brazos River near Glen Rose TX 32.2716 -97.6000 GNDT2 West Mustang Creek near Ganado TX 29.0714 -96.4669 GNGT2 San Gabriel River at Granger Lake TX 30.7261 -97.3261 GNLT2 Guadalupe River at Gonzales TX 29.4969 -97.4547 GNVT2 Cowleech Fork Sabine River at Greenville TX 33.1328 -96.0767 GPET2 North Texas Lakes at Mountain Creek Lake TX 32.7319 -96.9431 GPLT2 Colorado River at Lake LBJ TX 30.5561 -98.3386 GPRT2 West Fork Trinity River at Grand Prairie TX 32.7628 -96.9950 GPVT2 North Texas Lakes at Lake Grapevine TX 32.9725 -97.0561 GRET2 Salt Fork of the Red River at Greenbelt Lake TX 34.9900 -100.8900 GRIT2 Trinity River near Goodrich TX 30.5719 -94.9486 GROT2 Paluxy River at Glen Rose TX 32.2314 -97.7769 GRST2 Navasota River above Groesbeck TX 31.5741 -96.5206 GTWT2 Berry Creek near Georgetown TX 30.7031 -97.6661 GWLT2 Lagarto Creek below George West TX 28.0594 -98.0967 GWNT2 Nueces River at George West TX 28.3328 -98.0855 HAGT2 Arroyo Colorado at Harlingen TX 26.1733 -97.6836 HBMT2 Brays Bayou at Houston TX 29.7000 -95.4167 HCCT2 Clear Creek at Friendswood TX 29.5172 -95.1783 HCDT2 Cedar Bayou near Crosby TX 29.9722 -94.9861 HCRT2 North Texas Lakes at Hubbard Creek Lake TX 32.8314 -98.9675 HECT2 Rio Grande at Heath Canyon TX 29.4500 -102.8300 HFFT2 Luce Bayou near Huffman TX 30.1094 -95.0597 HGTT2 White Oak Bayou at Houston TX 29.7833 -95.4000 HIBT2 Brazos River near Highbank TX 31.1334 -96.8247 HICT2 North Bosque River at Hico TX 31.9781 -98.0344 HLCT2 Lelia Lake Creek at Hedley TX 34.9400 -100.7000 HMLT2 Leon River near Hamilton TX 31.7886 -98.1211 HMMT2 West Fork San Jacinto River near Humble TX 30.0264 -95.2583 HNTT2 Guadalupe River at Hunt TX 30.0697 -99.3214 HPDT2 Brazos River near Hempstead TX 30.1289 -96.1875 HSIT2 Sims Bayou at Houston TX 29.6667 -95.2833 HSJT2 Southeast Texas Lakes at Lake Houston TX 29.9133 -95.1403 HTST2 Lavaca River at Hallettsville TX 29.4431 -96.9447 HWLT2 Clear Fork Brazos River at Hawley TX 32.5980 -99.8150 IKLT2 Colorado River at Inks Lake TX 30.7317 -98.3853 IRAT2 Colorado River at Ira TX 32.5400 -101.0500 JAKT2 West Fork Trinity River near Jacksboro TX 33.2933 -98.0786 JCIT2 Johnson Creek above Ingram TX 30.1000 -99.2828 JEFT2 Black Cypress Bayou near Jefferson TX 32.7778 -94.3572 JFET2 Big Cypress Creek above Jefferson TX 32.7331 -94.4639 JFFT2 Little Cypress Creek near Jefferson TX 32.7128 -94.3458 JKST2 Mud Creek near Jacksonville TX 31.9764 -95.1601 JNCT2 Llano River near Junction TX 30.5040 -99.7340 JNXT2 Devils River at Cauthorn Ranch near Juno TX 30.0792 -101.1097 JOCT2 Pedernales River at Johnson City TX 30.2917 -98.3992 JPLT2 North Texas Lakes at Joe Pool Lake TX 32.6433 -97.0008 JSPT2 Neches River at Sam Rayburn Reservoir TX 31.0600 -94.1067 JTBT2 Brazos River at Justiceburg TX 33.0380 -101.1970 KEMT2 Lampasas River near Kempner TX 31.0817 -98.0164 KLGT2 Rabbit Creek at Kilgore TX 32.3881 -94.9031 KNBT2 Dove Creek at Knickerbocker TX 31.2740 -100.6310 KNLT2 Sandy Creek near Kingsland TX 30.5575 -98.4717 KOUT2 Village Creek near Kountze TX 30.3978 -94.2633 KRRT2 Guadalupe River at Kerrville TX 30.0531 -99.1631 KTNT2 Sweetwater Creek at Kelton TX 35.4800 -100.1200 KWHT2 Hondo Creek at King Waterhole near Hondo TX 29.3906 -99.1511 KYET2 Blanco River near Kyle TX 29.9792 -97.9094 LACT2 Medina River at La Coste TX 29.3239 -98.8128 LAJT2 Rio Grande at Lajitas Crossing TX 29.2700 -103.7800 LART2 North Texas Lakes at Lake Arlington TX 32.7161 -97.1922 LBWT2 Pecan Bayou at Lake Brownwood TX 31.8369 -99.0036 LBYT2 Trinity River at Liberty TX 30.0575 -94.8181 LCBT2 Wolf Creek at Lipscomb TX 36.2400 -100.2800 LCTT2 Southeast Texas Lakes at Lake Conroe TX 30.3583 -95.5608 LDOT2 Rio Grande at Laredo TX 27.4958 -99.4917 LEWT2 North Texas Lakes at Lake Lewisville TX 33.0692 -96.9642 LGRT2 Colorado River above La Grange TX 29.9122 -96.9036 LHPT2 Brazos River at Lake Alan Henry TX 33.0640 -101.0490 LIVT2 Long King Creek at Livingston TX 30.7161 -94.9586 LKST2 Leon Creek at San Antonio I-35 South TX 29.3297 -98.5839 LLAT2 Llano River at Llano TX 30.7511 -98.6697 LLGT2 San Marcos River at Luling TX 29.6661 -97.6506 LLST2 North Texas Lakes at Lake Limestone TX 31.3250 -96.3189 LMCT2 East Mustang Creek near Louise TX 29.0706 -96.4169 LOBT2 Rio Grande at Lower Brownsville TX 25.8763 -97.4555 LOLT2 Trinity River near Long Lake TX 31.6483 -95.7892 LONT2 Sabine River below Longview TX 32.4167 -94.7097 LPPT2 North Texas Lakes at Lake Palo Pinto TX 32.9686 -98.4859 LPTT2 North Texas Lakes at Lake Palestine TX 32.0533 -95.4367 LRIT2 Little River near Little River TX 30.9664 -97.3458 LSNT2 Navidad River at Strane Park TX 29.0653 -96.6739 LTRT2 Pecos River near Langtry TX 29.8028 -101.4460 LTXT2 Southeast Texas Lakes at Lake Texana TX 28.8917 -96.5775 LUFT2 Angelina River near Lufkin TX 31.4572 -94.7261 LULT2 Plum Creek near Luling TX 29.6994 -97.6033 LVDT2 Southeast Texas Lakes at Lake Livingston TX 30.6333 -95.0100 LVNT2 North Texas Lakes at Lake Lavon TX 33.0317 -96.4822 LYNT2 Davidson Creek near Lyons TX 30.4194 -96.5400 MADT2 Rio Grande at Anzalduas Reservior TX 26.1306 -98.3361 MBCT2 Beaver Creek near Mason TX 30.6430 -99.0960 MBFT2 Trinity River near Moss Bluff TX 29.9417 -94.7742 MCDT2 Rio Grande at Mercedes TX 26.0667 -97.9000 MCET2 McClellan Creek at McLean TX 35.3300 -100.6100 MCGT2 Middle Bosque River near McGregor TX 31.5092 -97.3656 MCKT2 East Fork Trinity River at McKinney TX 33.2439 -96.6086 MDLT2 Medina River at Medina Lake TX 29.5100 -98.9111 MDST2 Bedias Creek near Madisonville TX 30.8842 -95.7775 MFDT2 Colorado River at Lake Marble Falls TX 30.5558 -98.2572 MIOT2 Medio Creek near Beeville TX 28.4828 -97.6564 MKZT2 Tule Draw at Mackenzie Reservior TX 34.5450 -101.4380 MLAT2 Sabine River near Mineola TX 32.6136 -95.4856 MLIT2 Pecan Bayou near Mullin TX 31.5170 -98.7400 MLRT2 Llano River near Mason TX 30.6610 -99.1090 MNRT2 San Saba River at Menard TX 30.9190 -99.7850 MRAT2 Navidad River near Morales TX 29.1356 -96.7442 MRIT2 Canadian River at Lake Meredith TX 35.7100 -101.5500 MSDT2 Colorado River at Lake Travis TX 30.3911 -97.9067 MTBT2 Nueces River at Mathis TX 28.0372 -97.8600 MTHT2 Nueces River at Lake Corpus Christi TX 28.0381 -97.8708 MTPT2 Tres Palacios River near Midfield TX 28.9278 -96.1708 NADT2 Bayou La Nana at Nacogdoches TX 31.6078 -94.6494 NAPT2 Sulphur River near Naples TX 33.2425 -94.6758 NBCT2 Comal River at New Braunfels TX 29.7058 -98.1222 NBRT2 Guadalupe River above Comal River at New Braunfels TX 29.7147 -98.1097 NCET2 East Fork San Jacinto River near New Caney TX 30.1453 -95.1242 NCST2 Neches River near Neches TX 31.8922 -95.4306 NGCT2 Garcitas Creek near Inez TX 28.8911 -96.8189 NGET2 Navasota River near Normangee TX 30.9736 -96.2403 NGTT2 Clear Fork Brazos River at Nugent TX 32.6900 -99.6690 OOST2 Oso Creek near Corpus Christi TX 27.7111 -97.5017 ORCT2 Little Cypress Creek near Ore City TX 32.6725 -94.7508 ORNT2 Sabine River at Orange TX 30.0903 -93.7319 PBGT2 Big Cypress Creek near Pittsburg TX 33.0208 -94.8819 PCTT2 North Texas Lakes at Proctor Lake TX 31.9686 -98.4858 PDAT2 Pecos River at Pandale Crossing TX 30.1300 -101.5700 PEDT2 Perdido Creek near Fannin TX 28.7514 -97.3159 PICT2 Cowhouse Creek near Pidcoke TX 31.2847 -97.8847 PIOT2 Rio Grande near Rio Grande 7NW Presidio TX 29.6000 -104.4500 PLOT2 Brazos River near Palo Pinto TX 32.8625 -98.3022 PLXT2 Rio Grande at Pipeline Crossing TX 27.4003 -99.4883 PNTT2 North Texas Lakes at Lake Tawakoni TX 32.8086 -95.9194 PNVT2 Running Water Draw-White River at Plainview TX 34.1790 -101.7020 PPTT2 Buffalo Bayou at Piney Point Village TX 29.7467 -95.5233 PRDT2 Rio Grande near Rio Grande 5SE Presidio TX 29.5200 -104.2900 PRKT2 Concho River at Paint Rock TX 31.5160 -99.9190 PRST2 Rio Grande at Presidio Bridge TX 29.5800 -104.4300 PSMT2 North Texas Lakes at Possum Kingdom Lake TX 32.8722 -98.4256 PTET2 West Fork San Jacinto River near Porter TX 30.0858 -95.2997 PWRT2 North Wichita River at Paducah 14SE TX 33.9510 -100.0640 QLAT2 South Fork Sabine River near Quinlan TX 32.8978 -96.2531 QTMT2 Lake Fork Creek near Quitman TX 32.7631 -95.4628 RCCT2 Copano Creek near Refugio TX 28.3033 -97.1122 RCET2 Chambers Creek near Rice TX 32.1983 -96.5200 REFT2 Mission River at Refugio TX 28.2917 -97.2789 RELT2 Colorado River at Robert Lee TX 31.8850 -100.4800 RGDT2 Rio Grande at Rio Grande City TX 26.3666 -98.8027 RKDT2 Brushy Creek near Rockdale TX 30.6439 -97.1183 RLRT2 Little River near Rockdale TX 30.7606 -97.0136 RMOT2 Brazos River at Richmond TX 29.5822 -95.7575 RMYT2 Trinity River near Romayor TX 30.4250 -94.8506 ROKT2 Neches River at Rockland TX 31.0247 -94.3986 ROST2 Brazos River near Rosharon TX 29.3494 -95.5822 ROYT2 Clear Fork Brazos River near Roby TX 32.7880 -100.3880 RRLT2 North Texas Lakes at Lake Ray Roberts TX 33.3553 -97.0497 RSAT2 San Gabriel River near Rockdale TX 30.6900 -97.0900 RSRT2 Trinity River near Rosser TX 32.4264 -96.4628 RVRT2 Trinity River at Riverside TX 30.8600 -95.4000 RYET2 Menard Creek near Rye TX 30.4811 -94.7794 SAAT2 Medina River at San Antonio US 281S TX 29.2539 -98.4722 SABT2 Sabinal River at Sabinal TX 29.3014 -99.4794 SACT2 Salado Creek at Loop 13 TX 29.3569 -98.4125 SBMT2 Navidad River at Sublime TX 29.4667 -96.8125 SBNT2 Rio Grande near San Benito TX 26.0305 -97.7277 SCCT2 Concho River at San Angelo TX 31.4540 -100.4100 SCDT2 Coleto Creek at Arnold Road Crossing TX 28.8614 -97.2261 SCLT2 North Texas Lakes at Jim Chapman Lake TX 33.3333 -95.6250 SCRT2 Seco Creek at Rowe Ranch near D'Hanis TX 29.3619 -99.2847 SDAT2 Caney Creek near Splendora TX 30.2594 -95.3022 SDCT2 Dry Run Creek at Snyder TX 32.7100 -100.9100 SEGT2 Guadalupe River at Seguin TX 29.5519 -97.9697 SELT2 Cibolo Creek at Selma TX 29.5939 -98.3108 SFIT2 Independence Creek at Chandler Ranch TX 30.4500 -101.7300 SGET2 Clear Creek near Sanger TX 33.3392 -97.1792 SGOT2 Pecan Creek near San Angelo TX 31.3090 -100.4460 SHAT2 North Fork of the Red River at Shamrock TX 35.2700 -100.2400 SHLT2 San Jacinto River near Sheldon TX 29.8761 -95.0936 SILT2 Colorado River above Silver TX 32.0540 -100.7620 SIOT2 Olmos Creek at Dresden Drive TX 29.4989 -98.5100 SKMT2 Aransas River near Skidmore TX 28.2822 -97.6206 SMCT2 Guadalupe River at Canyon Lake TX 29.8686 -98.1986 SMIT2 Colorado River near Smithville TX 30.0119 -97.1622 SMMT2 Medina River near Somerset TX 29.2625 -98.5822 SNBT2 Colorado River near San Saba TX 31.2180 -98.5640 SNCT2 North Concho River at San Angelo TX 31.4660 -100.4480 SNPT2 San Antonio River at Loop 410 at San Antonio TX 29.3220 -98.4497 SOLT2 Pine Island Bayou near Sour Lake TX 30.1058 -94.3344 SOMT2 Southeast Texas Lakes at Lake Somerville TX 30.3167 -96.5333 SOUT2 Brazos River near South Bend TX 33.0242 -98.6436 SPAT2 Navidad River near Speaks TX 29.3217 -96.7089 SPCT2 Pecos River at Sheffield TX 30.6700 -101.7700 SPDT2 Peach Creek near Splendora TX 30.2325 -95.1681 SPMT2 Palo Duro Creek at Spearman TX 36.2000 -101.3100 SPNT2 Spring Creek near Spring TX 30.1103 -95.4361 SPRT2 Palo Duro Creek at Palo Duro Reservoir TX 36.3900 -101.1600 SRCT2 North Concho River at Sterling City TX 31.8300 -100.9930 SRGT2 Guadalupe River near Spring Branch TX 29.8603 -98.3833 SSBT2 San Saba River at San Saba TX 31.2130 -98.7190 SSCT2 Salado Creek at NE Loop 410 TX 29.5167 -98.4333 STFT2 California Creek near Stamford TX 32.9310 -99.6420 STIT2 North Texas Lakes at Stillhouse Hollow Lake TX 31.0222 -97.5325 STLT2 Guadalupe River at Sattler TX 29.8589 -98.1797 STUT2 Cypress Creek at Stuebner-Airline Road Near Westfield TX 30.0064 -95.5117 STYT2 Colorado River at Stacy TX 31.4940 -99.5740 SWYT2 San Bernard River near Sweeny TX 29.0833 -95.6833 SYDT2 Deep Creek at Snyder TX 32.7200 -100.9200 SYMT2 Brazos River at Seymour TX 33.5810 -99.2670 TBFT2 Neches River near Town Bluff TX 30.7908 -94.1508 TDDT2 Trinity River at Trinidad TX 32.1347 -96.1056 TELT2 Rio Grande at Johnson Ranch TX 29.0300 -103.3900 THET2 Nueces River near Three Rivers TX 28.4272 -98.1778 TIDT2 Frio River at Tilden TX 28.4672 -98.5472 TILT2 Nueces River near Tilden TX 28.3086 -98.5569 TIVT2 Guadalupe River near Tivoli TX 28.5056 -96.8844 TKLT2 Spring Creek above Tankersley TX 31.3300 -100.6400 TKST2 Middle Concho River above Tankersley TX 31.4270 -100.7110 TLCT2 Sulphur River near Talco TX 33.3906 -95.0622 TLPT2 Middle Wichita River at Guthrie 19NE TX 33.8080 -100.0430 TNGT2 Terlingua Creek near Terlingua Creek 7S Terlingua TX 29.2000 -103.6200 TNLT2 San Miguel Creek near Tilden TX 28.5872 -98.5456 TRNT2 North Texas Lakes at Cedar Creek Lake TX 32.2431 -96.1406 UDET2 Frio River below Dry Frio near Uvalde TX 29.2456 -99.6742 UVAT2 Nueces River at Laguna TX 29.4283 -99.9969 UVLT2 Nueces River below Uvalde TX 29.1236 -99.8944 VERT2 Pease River near Vernon TX 34.1790 -99.2780 VICT2 Guadalupe River at Victoria TX 28.7928 -97.0128 VMAT2 North Bosque River at Valley Mills TX 31.6694 -97.4692 WAYT2 Prairie Dog Town Fork of the Red River at Wayside TX 34.8400 -101.4200 WBAT2 Brazos River at Waco TX 31.5358 -97.0731 WBRT2 Beals Creek near Beals Creek 11S Westbrook TX 32.2000 -101.0100 WCBT2 Brazos River near West Columbia TX 29.1108 -95.6056 WCHT2 Colorado River at Winchell TX 31.4680 -99.1620 WEAT2 Clear Fork Trinity River near Weatherford TX 32.7403 -97.6517 WFDT2 Cypress Creek near Westfield TX 30.0361 -95.4286 WHAT2 Colorado River at Wharton TX 29.3089 -96.1036 WHOT2 Sandies Creek near Westhoff TX 29.2150 -97.4492 WICT2 Wichita River at Wichita Falls TX 33.9090 -98.5330 WLGT2 Salt Fork of the Red River at Wellington TX 34.9600 -100.2200 WMBT2 Blanco River at Wimberley TX 29.9942 -98.0886 WOCT2 White Oak Creek near Talco TX 33.3222 -95.0925 WRST2 Fifteenmile Creek near Weser TX 28.8975 -97.3547 WTTT2 Atascosa River at Whitsett TX 28.6219 -98.2811 WTYT2 North Texas Lakes at Whitney Lake TX 31.8653 -97.3717 BERU1 Bear River near Utah/Wyoming State Line UT 40.9656 -110.8540 BFFU1 San Juan River near Bluff UT 37.1470 -109.8640 CIVU1 Chalk Creek near Coalville UT 40.9207 -111.4000 CLRU1 Colorado River near Cisco UT 38.8106 -109.2928 DCHU1 Strawberry River near Duchesne UT 40.1547 -110.5540 DURU1 Duchesne River near Randlett UT 40.2160 -109.7830 ECCU1 East Canyon Creek near Morgan UT 40.9226 -111.6060 GRZU1 Green River near Greendale UT 40.9083 -109.4220 HATU1 Sevier River near Hatch UT 37.6514 -112.4310 HRMU1 Blacksmith Fork River near Hyrum UT 41.6236 -111.7320 HURU1 Virgin River near Hurricane UT 37.2042 -113.1800 JESU1 Green River at Jensen UT 40.4090 -109.2350 LGNU1 Logan River near Logan UT 41.7437 -111.7860 NFVU1 North Fork Virgin River near Springdale UT 37.2097 -112.9770 OAWU1 Weber River near Oakley UT 40.7370 -111.2470 OPDU1 Ogden River below Pineview Reservoir UT 41.2445 -111.8550 PAKU1 Paria River near Kanab UT 37.1035 -111.9050 PCVU1 Paria River near Cannonville UT 37.4801 -112.4810 SCGU1 Santa Clara River at Gunlock UT 37.2819 -113.7667 SEKU1 Sevier River near Kingston UT 38.2061 -112.2069 SRKU1 Sevier River near East Fork nr Kingston UT 38.1964 -112.1469 SRSU1 Santa Clara River near St. George UT 37.0754 -113.5920 STCU1 Santa Clara River near Pine Valley UT 37.3833 -113.4830 VIRU1 Virgin River near Virgin UT 37.2043 -113.1800 VLTA3 Virgin River at Littlefield UT 36.8916 -113.9240 WOOU1 Provo River near Woodland UT 40.5790 -111.1680 WTRU1 Whiterocks River near Whiterocks UT 40.5869 -109.9269 ALTV2 Roanoke River at Altavista VA 37.1100 -79.2800 BECV2 James River at Bent Creek VA 37.5360 -78.8290 BNNV2 James River at Buchanan VA 37.5310 -79.6790 BREV2 James River at Bremo Bluff VA 37.7110 -78.3020 BROV2 Roanoke River at Brookneal VA 37.0400 -78.9500 BUVV2 Maury River near Buena Vista VA 37.7500 -79.3800 CARV2 James River at Cartersville VA 37.6708 -78.0861 CLPV2 Rapidan River near Culpeper VA 38.3503 -77.9753 CLVV2 Clinch River at Cleveland VA 36.9500 -82.1500 COOV2 North Fork Shenandoah River at Cootes Store VA 38.6369 -78.8531 CVGV2 Jackson River at Covington VA 37.7890 -80.0010 DMCV2 Laurel Creek near Damascus VA 36.6330 -81.7660 DVLV2 Dan River at Danville VA 36.5600 -79.3700 EPOV2 Meherrin River at Emporia VA 36.6901 -77.5405 FDBV2 Rappahannock River above Fredericksburg VA 38.3160 -77.5260 FEDV2 Rappahannock River at Fredericksburg City Dock VA 38.3000 -77.4667 FKNV2 Blackwater River near Franklin VA 36.7627 -76.8983 FRMV2 Appomattox River at Farmville VA 37.3069 -78.3889 FROV2 South Fork Shenandoah River at Front Royal VA 38.9139 -78.2111 GATV2 North Fork Holston River near Gate City VA 36.6086 -82.5681 GAXV2 New River at Galax VA 36.6500 -80.9800 GDMV2 Jackson River at Gathright Dam VA 37.9500 -79.9500 GLLV2 New River at Glen Lyn VA 37.3700 -80.8600 GRYV2 New River at Graysonton VA 37.0375 -80.5569 HAIV2 Russell Fork River at Haysi VA 37.2000 -82.2800 HRKV2 James River at Holcomb Rock VA 37.5010 -79.2630 JNSV2 Powell River near Jonesville VA 36.6660 -83.1000 KERV2 Roanoke River at John Kerr Dam VA 36.6000 -78.2800 LAWV2 Meherrin River near Lawrenceville VA 36.7168 -77.8317 LEEV2 Goose Creek near Leesburg VA 39.0194 -77.5778 LIRV2 James River at Lick Run VA 37.7740 -79.7840 LNBV2 North Meherrin River near Lunenburg VA 36.9975 -78.3497 LYWV2 South Fork Shenandoah River near Lynnwood VA 38.3225 -78.7550 MTCV2 Appomattox River at Matoaca VA 37.2252 -77.4753 MTXV2 Appomattox River at Mattoax VA 37.4214 -77.8592 PCEV2 Dan River at Paces VA 36.6400 -79.0900 PTTV2 Smith River at Philpott Dam VA 36.7800 -80.0300 PYAV2 Rivanna River at Palmyra VA 37.8578 -78.2661 RAWV2 Nottoway River near Rawlings VA 36.9835 -77.7997 RDFV2 New River at Radford VA 37.1500 -80.5700 RENV2 Rappahannock River at Remington VA 38.5306 -77.8139 RICV2 James River at Richmond Locks VA 37.5333 -77.4167 RLRV2 Clinch River near Richlands VA 37.0860 -81.7810 RMDV2 James River at Richmond-Westham VA 37.5631 -77.5472 RNDV2 Roanoke River at Randolph VA 36.9200 -78.7400 RONV2 Roanoke River at Roanoke VA 37.2600 -79.9400 SALV2 North Fork Holston River at Saltville VA 36.9000 -81.7500 SBNV2 Dan River at South Boston VA 36.6900 -78.9000 SEBV2 Nottoway River near Sebrell VA 36.7704 -77.1661 SFYV2 Clinch River near Speers Ferry VA 36.6430 -82.7500 SMIV2 Roanoke River at Smith Mountain Lake VA 37.0200 -79.5300 STGV2 North Fork Shenandoah River near Strasburg VA 38.9767 -78.3364 STYV2 Nottoway River near Stony Creek VA 37.0671 -77.6025 SVEV2 James River at Scottsville VA 37.7970 -78.4910 WAYV2 South River near Waynesboro VA 38.0575 -78.9083 XCSP4 Jolly Hill Gut at Frederiksted VI 17.7333 -64.8631 XTFP4 Turpentine Run at Mt Zion VI 18.3320 -64.8889 ARLV1 Battenkill at Arlington VT 43.0833 -73.1500 BNTV1 Hoosic River at Walloomsac River near North Bennington VT 42.9200 -73.2200 BRAN6 St. Regis River at Brasher Center VT 44.8636 -74.7792 CARV1 Poultney River below Fair Haven VT 43.6242 -73.3119 CENV1 Otter Creek at Center Rutland VT 43.6036 -73.0136 EBKV1 Missisquoi River at East Berkshire VT 44.9583 -72.6986 EHVV1 East Branch of the Passumpsic River at East Haven VT 44.6339 -71.8981 ESSV1 Winooski River at Essex Junction VT 44.4788 -73.1392 GEOV1 Lamoille River at East Georgia VT 44.6792 -73.0731 JONV1 Lamoille River at Johnson VT 44.6227 -72.6806 MDBV1 Otter Creek at Middlebury VT 44.0131 -73.1683 MONV1 Winooski River at Montpelier VT 44.2563 -72.5933 MOOV1 Mad River near Moretown VT 44.2783 -72.7436 NFFV1 Dog River at Northfield Falls VT 44.1828 -72.6408 NHDV1 Ottauquechee River at North Hartland VT 43.6025 -72.3547 NOSV1 Black River at North Springfield VT 43.3392 -72.5139 NTYV1 Missisquoi River at North Troy VT 44.9727 -72.3875 PASV1 Passumpsic River at Passumpsic VT 44.3700 -72.0300 RKGV1 Williams River near Rockingham VT 43.1919 -72.4861 SAXV1 Saxtons River at Saxtons River VT 43.1372 -72.4881 SWAV1 Missisquoi River at Swanton VT 44.9167 -73.1289 TOWV1 West River below Townshend Lake VT 43.0500 -72.6997 UNVV1 Ompompanoosuc River at Union Village Dam VT 43.7900 -72.2553 WATV1 Winooski River at Waterbury VT 44.3284 -72.7470 WEHV1 White River at West Hartford VT 43.7170 -72.4170 WELV1 Connecticut River at Wells River VT 44.1500 -72.0333 WLRV1 Wells River at Wells River VT 44.1503 -72.0656 WRSV1 Little River near Waterbury VT 44.3703 -72.7689 AHUW1 Ahtanum Creek at Union Gap WA 46.5356 -120.4722 ALFW1 Pend Oreille River below Albeni Falls Dam WA 48.1800 -117.0300 AMRW1 American River near Nile WA 46.9833 -121.1667 ANAW1 Snake River near Anatone WA 46.0972 -116.9766 ARDW1 Entiat River near Ardenvoir WA 47.8186 -120.4219 ARGW1 NF Stillaguamish River near near Arlington WA 48.2617 -122.0464 ARLW1 Stillaguamish River at Stilliguamish R at Arlington WA 48.2006 -122.1280 AUBW1 Green River near Auburn WA 47.3125 -122.2030 BCDW1 Skookumchuck River near Bucoda WA 46.7722 -122.9230 BDYW1 Pend Oreille River at International Boundary WA 48.7811 -117.4152 BOGW1 Bogachiel River near La Push WA 47.9031 -124.5447 BUKW1 White River at Buckley WA 47.1667 -122.0167 BUMW1 Bumping River below Bumping Dam WA 46.8833 -121.2833 CALW1 Calawah River near Forks WA 47.9603 -124.3917 CASW1 Cowlitz River at Castle Rock WA 46.2740 -122.9120 CENW1 Chehalis River at Centralia WA 46.7117 -122.9780 CGMW1 Chehalis River near Grand Mound WA 46.7761 -123.0340 CHDW1 Lake Chelan at Chelan WA 47.8363 -120.0602 CHIW1 Chiwawa River near Plain WA 47.8375 -120.6611 CHJW1 Columbia River at Chief Joseph Dam WA 48.0000 -119.6500 CHKW1 Chamokane Creek above Falls near Long Lake WA 47.8616 -117.8577 CIBW1 Columbia River at International Boundary WA 49.0008 -117.6283 CLEW1 Yakima River at Cle Elum Outflow WA 47.2500 -121.0667 CLFW1 Naches River near Cliffdell WA 46.9100 -121.0200 CONW1 Skagit River near Concrete WA 48.5244 -121.7700 CRBW1 Crab Creek at Irby WA 47.3605 -118.8488 CRNW1 Snoqualmie River near Carnation WA 47.6661 -121.9240 CRPW1 Chehalis River at Porter WA 46.9381 -123.3120 CTAW1 Skookumchuck River at Centralia WA 46.7311 -122.9530 DEMW1 Nooksack River at Deming WA 48.8106 -122.2040 DOTW1 Chehalis River near Doty WA 46.6175 -123.2764 DRSW1 Dungeness River near Sequim WA 48.0144 -123.1310 DSRW1 Deschutes River near Rainier WA 46.8522 -122.6680 EASW1 Yakima River at Easton WA 47.2389 -121.1778 ELWW1 Elwha River at Elwha R WA 48.0550 -123.5820 ENRW1 Entiat River near Entiat WA 47.6633 -120.2494 FFXW1 Carbon River near Fairfax WA 47.0278 -122.0310 FRYW1 Kettle River near Ferry WA 48.9813 -118.7652 GCDW1 Columbia River at Grand Coulee Dam WA 47.9555 -118.9838 GFLW1 SF Stillaguamish River near Granite Falls WA 48.1039 -121.9456 GLBW1 Skykomish River near Gold Bar WA 47.8375 -121.6660 GRRW1 Grays River near Rosberg 2NE WA 46.3542 -122.5814 HAGW1 Hangman/Latah Creek at Spokane WA 47.6527 -117.4486 ISSW1 Issaquah Creek near Issaquah WA 47.5525 -122.0470 KACW1 Yakima River at Kachess Outflow WA 47.2614 -121.2022 KEEW1 Yakima River at Keechelus Outflow WA 47.3167 -121.3333 KELW1 Cowlitz River at Kelso WA 46.1430 -122.9160 KIOW1 Yakima River at Kiona WA 46.2533 -119.4772 KTFW1 Colville River at Kettle Falls WA 48.5944 -118.0613 LAUW1 Kettle River near Laurier WA 48.9844 -118.2152 LNDW1 Cedar River near Landsburg WA 47.3939 -121.9530 LNRW1 Little Naches River near Nile WA 46.9875 -121.0986 LOPW1 Columbia River at Longview WA 46.1230 -122.9540 LRWW1 Lewis River at Woodland WA 45.9060 -122.7380 LSDW1 Little Spokane River at Dartford WA 47.7847 -117.4033 MAYW1 Cowlitz River below Mayfield Dam WA 46.5106 -122.6150 MERW1 Lewis River at Ariel WA 45.9506 -122.5642 MKNW1 Nisqually River at McKenna WA 46.9336 -122.5600 MLKW1 Mill Creek near Walla Walla WA 46.0081 -118.1875 MLLW1 Mill Creek at Walla Walla WA 46.0764 -118.2725 MMDW1 White River below Mud Mountain Dam WA 47.1514 -121.9490 MMRW1 Mud Mountain Lake near Buckley WA 47.1408 -121.9300 MNSW1 Wynoochee River near Montesano WA 47.0117 -123.6540 MONW1 Wenatchee River at Monitor WA 47.4994 -120.4233 MROW1 Snohomish River near Monroe WA 47.8311 -122.0470 MSLW1 Crab Creek near Moses Lake WA 47.1894 -119.2647 MVEW1 Skagit River near Mt Vernon WA 48.4450 -122.3340 MZMW1 Methow River above Goat Creek near Mazama WA 48.5755 -120.3847 NACW1 Naches River near Naches WA 46.7467 -120.7681 NASW1 Naselle River near Naselle WA 46.3740 -123.7420 NEWW1 Newaukum River near Chehalis WA 46.6200 -122.9447 NISW1 Nisqually River near National WA 46.7528 -122.0820 NITW1 Similkameen River near Nighthawk WA 48.9847 -119.6172 NKSW1 Nooksack River at Ferndale WA 48.8450 -122.5880 NRKW1 Nooksack River at North Cedarvillle WA 48.8419 -122.2931 OKMW1 Okanogan River at Malott WA 48.2813 -119.7033 OKNW1 Okanogan River at Oroville WA 48.9308 -119.4191 ORTW1 Puyallup River near Orting WA 47.0394 -122.2070 PACW1 Cowlitz River at Packwood WA 46.6131 -121.6780 PARW1 Yakima River near Parker WA 46.5000 -120.4500 PATW1 Methow River near Pateros WA 48.0775 -119.9839 PESW1 Wenatchee River at Peshastin WA 47.5833 -120.6167 PITW1 Klickitat River near Pitt WA 45.7567 -121.2089 PRDW1 Columbia River below Priest Rapids Dam WA 46.6289 -119.8636 PRII1 Potlatch River near Spalding WA 46.4986 -116.7619 PULW1 South Fork Palouse River at Pullman WA 46.7300 -117.1825 PUYW1 Puyallup River at Puyallup WA 47.2086 -122.3260 RAWW1 Cowlitz River at Randle WA 46.5325 -121.9560 RISW1 Columbia River at Rock Island Dam WA 47.3325 -120.0800 RNTW1 Cedar River at Renton WA 47.4828 -122.2020 RRHW1 Columbia River at Rocky Reach Dam WA 47.5244 -120.3011 SAKW1 Sauk River near Sauk WA 48.4247 -121.5672 SATW1 Satsop River near Satsop WA 47.0008 -123.4940 SNAW1 Snohomish River at Snohomish WA 47.9106 -122.0980 SPOW1 Spokane River at Spokane WA 47.6594 -117.4481 SQUW1 Snoqualmie River at Snoqualmie Falls WA 47.5453 -121.8410 SRPW1 Skokomish River near Potlatch WA 47.3100 -123.1760 STHW1 Stehekin River at Stehekin WA 47.8363 -120.0602 TCHW1 Walla Walla River near Touchet WA 46.0333 -118.7333 TICW1 Tieton River at Tieton Headworks WA 46.6667 -121.0000 TNAW1 Teanaway River near Cle Elum WA 47.2464 -120.8611 TOLW1 Tolt River near Carnation WA 47.6958 -121.8230 TONW1 Okanogan River near Tonasket WA 48.6325 -119.4606 TOTW1 Toutle River at Tower Road near Silver Lake WA 46.3339 -122.8389 TWIW1 Twisp River near Twsip WA 48.3700 -120.1475 UMTW1 Yakima River at Umtanum WA 46.8628 -120.4789 VANW1 Columbia River at Vancouver WA 45.6210 -122.6720 WCHW1 Sauk River above White Chuck R WA 48.1667 -121.4667 WELW1 Columbia River at Wells Dam WA 47.9500 -119.8700 WILW1 Willipa River at Willapa WA 46.6510 -123.6510 WINW1 Chewuch River at Winthrop WA 48.4772 -120.1852 WKMW1 South Fork Nooksack River near Wickersham WA 48.6644 -122.1656 WPLW1 Wenatchee River at Plain WA 47.7630 -120.6650 WTHW1 Methow River at Winthrop WA 48.4736 -120.1761 YUMW1 Yakima River at Cle Elum WA 47.1919 -120.9456 AFTW3 Rock River at Afton WI 42.6090 -89.0710 ALBW3 Sugar River at Albany WI 42.7060 -89.4380 ALMW3 Mississippi River at Alma WI 44.3250 -91.9230 AMBW3 Pike River at Amberg WI 45.5000 -88.0000 APLW3 Fox River at Appleton WI 44.2500 -88.3700 ATHW3 Peshtigo River near Athelstane WI 45.4000 -88.3100 BABW3 Baraboo River near Baraboo WI 43.4810 -89.6360 BBCW3 Yellow River at Babcock WI 44.3010 -90.1210 BBOW3 Baraboo River at West Baraboo WI 43.4710 -89.7590 BCHW3 Pecatonica River near Blanchardville WI 42.7860 -89.8610 BEAW3 Beaverdam River at Beaver Dam WI 43.4490 -88.8390 BERW3 Fox River at Berlin WI 43.9540 -88.9520 BLEW3 Black Earth Creek at Black Earth WI 43.1340 -89.7320 BRFW3 Black River at Black River Falls WI 44.2940 -90.8460 BRGW3 Fox River at Burlington WI 42.6800 -88.2720 BRKW3 Pine River near Florence WI 45.8400 -88.2300 BROW3 Sugar River at Brodhead WI 42.6120 -89.3980 BTNW3 Grant River at Burton WI 42.7200 -90.8190 BUNW3 Galena River at Buncombe WI 42.5140 -90.3780 CDRW3 Cedar Creek at Cedarburg WI 43.3230 -87.9790 CEDW3 Milwaukee River near Cedarburg WI 43.2800 -87.9420 CLIW3 Turtle Creek near Clinton WI 42.5970 -88.8290 COMW3 Brule River near Commonwealth WI 45.9500 -88.2620 DARW3 Pecatonica River at Darlington WI 42.6780 -90.1190 DDGW3 Trempealeau River at Dodge WI 44.1320 -91.5540 DURW3 Chippewa River at Durand WI 44.6280 -91.9690 ECLW3 Chippewa River at Eau Claire WI 44.8110 -91.4980 EMBW3 Embarrass River near Embarrass WI 44.7200 -88.7400 FATW3 Rock River at Fort Atkinson WI 42.9280 -88.8430 FCEW3 Popple River at Fence WI 45.7600 -88.4700 FLCW3 Eau Claire River near Fall Creek WI 44.7636 -91.2769 FLOW3 Menominee River near Florence WI 45.9520 -88.1840 FLRW3 Brule River near Florence 4 NW WI 46.0000 -88.3500 FRKW3 Root River at Franklin WI 42.8740 -87.9960 FULW3 Yahara River at Fulton WI 42.8260 -89.1720 GALW3 Black River at Galesville WI 44.0730 -91.2950 GBYW3 Fox River at Green Bay WI 44.5300 -88.0100 GILW3 Oconto River near Gillett WI 44.8600 -88.3000 GMIW3 Kickapoo River at Gays Mills WI 43.3180 -90.8450 HAYW3 Manitowoc River at Hayton WI 44.0200 -88.1200 HCNW3 Rock River at Horicon WI 43.4460 -88.6310 HILW3 South Branch Baraboo at Hillsboro WI 43.6670 -90.3333 HOWW3 Duck Creek at Howard WI 44.5300 -88.1300 INFW3 Rock River at Indianford Dam WI 42.8040 -89.0900 JFFW3 Rock River at Jefferson WI 42.9960 -88.8070 KELW3 Eau Claire River at Kelly WI 44.9200 -89.5500 KEWW3 Kewaunee River near Kewaunee WI 44.4500 -87.5600 LACW3 Mississippi River at La Crosse WI 43.8130 -91.2570 LAFW3 Kickapoo River at La Farge WI 43.5740 -90.6430 LAVW3 Baraboo River at La Valle WI 43.5830 -90.1320 LGLW3 Wolf River at Langlade WI 45.1900 -88.7400 LODW3 Spring Creek at Lodi WI 43.3217 -89.5311 LTKW3 Wisconsin River at Rainbow Reservoir WI 45.8300 -89.5500 MAZW3 Black Earth Creek at Mazomanie WI 43.1710 -89.8200 MCAW3 Menominee River near Mcallister WI 45.3240 -87.6620 MEEW3 Milwaukee River at Milwaukee WI 43.1000 -87.9090 MFSW3 Menomonee River at Menomonee Falls WI 43.1730 -88.1040 MILW3 Crawfish River at Milford WI 43.1000 -88.8490 MORW3 Red River near Gresham WI 44.9000 -88.8400 MRLW3 Prairie River near Merrill WI 45.2300 -89.6500 MTNW3 Pecatonica River at Martintown WI 42.5090 -89.7990 MTWW3 Manitowoc River at Manitowoc WI 44.1000 -87.7200 MUKW3 Mukwonago River at Mukwonago WI 42.8570 -88.3280 MUSW3 Wisconsin River at Muscoda WI 43.1980 -90.4410 NEIW3 Black River at Neillsville WI 44.5590 -90.6140 NEWW3 Wolf River at Wolf River in New London WI 44.3920 -88.7400 NIAW3 Menominee River at Niagara WI 45.7680 -87.9800 NMSW3 Fox River at New Munster WI 42.6110 -88.2260 NVLW3 Rock River near Newville WI 42.8580 -88.9410 OAKW3 Oak Creek at South Milwaukee WI 42.9250 -87.8700 OCTW3 Oconto River near Oconto WI 44.8600 -87.9900 ONTW3 Kickapoo River at Ontario WI 43.7220 -90.5880 OSKW3 Fox River at Menasha-Fritse Park WI 44.2000 -88.4700 OSSW3 Fox River at Oshkosh WI 44.0100 -88.5400 PBIW3 Menominee River near Pembine WI 45.5800 -87.7900 PESW3 Peshtigo River at Peshtigo WI 45.0500 -87.7400 PFDW3 Peshtigo River near Porterfield WI 45.1300 -87.8070 PORW3 Wisconsin River at Portage WI 43.5390 -89.4630 RACW3 Root River at Racine WI 42.7510 -87.8240 RAYW3 Root River Canal near Raymond WI 42.8150 -87.9970 REAW3 Kickapoo River at Readstown WI 43.4494 -90.7647 ROMW3 Bark River at Rome WI 42.9600 -88.6710 ROTW3 Wisconsin River at Rothschild WI 44.8860 -89.6350 ROYW3 Little Wolf River at Royalton WI 44.4130 -88.8650 RRLW3 Wisconsin River at Merrill WI 45.1780 -89.6810 RSPW3 Baraboo River at Rock Springs WI 43.4780 -89.9160 RVLW3 Platte River at Rockville WI 42.7310 -90.6400 SEBW3 Sheboygan River at Sheboygan WI 43.7420 -87.7540 SHAW3 Wolf River near Shawano WI 44.8300 -88.6300 SHIW3 Wolf River at Shiocton WI 44.4400 -88.5800 SOGW3 Kickapoo River at Soldiers Grove WI 43.3950 -90.7740 STEW3 Kickapoo River at Steuben WI 43.1830 -90.8580 STRW3 Big Eau Pleine River near Stratford WI 44.8200 -90.0900 TRIW3 Spirit River near Spirit Falls WI 45.4500 -89.9900 VIOW3 Kickapoo River at Viola WI 43.5060 -90.6750 WATW3 Rock River at Watertown WI 43.1880 -88.7260 WAUW3 Milwaukee River at Waubeka WI 43.4730 -87.9900 WDEW3 Wisconsin River at Wisconsin Dells WI 43.6060 -89.7570 WIRW3 Wisconsin River at Wisconsin Rapids WI 44.3950 -89.8250 WITW3 Embarrass River near Wittenberg WI 44.8200 -89.1200 WKEW3 Fox River at Waukesha WI 43.0050 -88.2440 WPCW3 Waupaca River near Waupaca WI 44.3290 -88.9960 WPNW3 Rock River at Waupun WI 43.6420 -88.7210 WWTW3 Menomonee River at Wauwatosa WI 43.0460 -88.0000 ALDW2 Greenbrier River at Alderson WV 37.7100 -80.6500 BELW2 Tygart Valley River at Belington WV 39.0231 -79.9331 BEMW2 Shavers Fork Cheat River at Bemis WV 38.8073 -79.7375 BEVW2 Ohio River at Belleville Lock WV 39.1186 -81.7422 BKNW2 Buckhannon River at Buckhannon WV 39.0057 -80.2106 BLMW2 North Branch Potomac River at Jennings Randolph Dam WV 39.4400 -79.1100 BOWW2 Shavers Fork Cheat River at Bowden WV 38.9132 -79.7703 BRAW2 Guyandotte River at Branchland WV 38.2100 -82.2000 BRSW2 Dry Fork River at Bradshaw WV 37.3955 -81.8023 BUCW2 Greenbrier River at Buckeye WV 38.1800 -80.1300 BVAW2 Gauley River at Belva WV 38.2333 -81.1792 CFXW2 Tygart Valley River at Colfax WV 39.4350 -80.1327 CHBW2 Cheat River at Cheat Bridge WV 38.6100 -79.8800 CLKW2 West Fork River near Clarksburg WV 39.2386 -80.3594 CLYW2 Elk River at Clay WV 38.4604 -81.0874 COGW2 Gauley River at Camden-on-Gauley WV 38.3653 -80.6014 CRSW2 Kanawha River at Charleston South Side Bridge WV 38.3500 -81.6300 DLYW2 Tygart Valley River at Dailey WV 38.8097 -79.8819 DRBW2 Greenbrier River at Durbin WV 38.5436 -79.8344 ELKW2 Tygart Valley River at Elkins WV 38.9253 -79.8794 ELZW2 Little Kanawha River at Elizabeth WV 39.0647 -81.3908 ENTW2 West Fork River at Enterprise WV 39.5633 -82.4741 FKLW2 South Branch Potomac River at Franklin WV 38.6357 -79.3378 GALW2 Ohio River at R C Byrd Lock WV 38.6831 -82.1861 GLEW2 Little Kanawha River at Glenville WV 38.9328 -80.8386 GRTW2 Little Kanawha River at Grantsville WV 38.9100 -81.1000 HFEW2 Potomac River at Harpers Ferry WV 39.3239 -77.7278 HINW2 New River at Hinton WV 37.6700 -80.8800 HNTW2 Ohio River at Huntington WV 38.4167 -82.5000 KANW2 Kanawha River at Kanawha Falls WV 38.1389 -81.2125 KRMW2 Tug Fork River at Kermit WV 37.8167 -82.3833 LITW2 Tug Fork River at Litwar WV 37.4800 -81.8500 LOGW2 Guyandotte River at Logan WV 37.8500 -82.0167 MBGW2 Opequon Creek near Martinsburg WV 39.4236 -77.9389 MILW2 Shenandoah River at Millville WV 39.2819 -77.7894 MNAW2 Guyandotte River near Man WV 37.7400 -81.8800 MOFW2 South Fork South Branch Potomac River near Moorefield WV 39.0122 -78.9564 MORW2 Monongahela River at Morgantown L&D WV 39.6200 -79.9700 MOUW2 Ohio River at Moundsville WV 39.9216 -80.7438 MRLW2 Greenbrier River at Marlinton WV 38.2167 -80.0833 NCUW2 Ohio River at New Cumberland Lock & Dam WV 40.5261 -80.6275 OKKW2 Monongahela River at Opekiska L & D WV 39.5638 -80.0494 PARW2 Ohio River at Parkersburg WV 39.2681 -81.5639 PETW2 South Branch Potomac River near Petersburg WV 38.9911 -79.1761 PHIW2 Tygart Valley River at Philippi WV 39.1500 -80.0403 PINW2 Guyandotte River at Pineville WV 37.5819 -81.5369 POMO1 Ohio River at Pomeroy WV 39.0259 -82.0355 POPW2 Ohio River at Point Pleasant WV 38.8403 -82.1417 PSNW2 Cheat River at Parsons WV 39.1030 -79.6658 QUSW2 Elk River at Queen Shoals WV 38.4722 -81.2861 RACW2 Ohio River at Racine Lock WV 38.9200 -81.9200 RNKW2 Greenbrier River at Renick WV 37.9800 -80.3600 ROWW2 Cheat River at Rowlesburg WV 39.3422 -79.6705 SPRW2 South Branch Potomac River near Springfield WV 39.4469 -78.6544 TORW2 Coal River at Tornado WV 38.3389 -81.8417 WELW2 Ohio River at Wellsburg WV 40.2753 -80.6119 WHLW2 Ohio River at Pike Island L&D WV 40.1477 -80.7016 WILW2 Tug Fork River at Williamson WV 37.6731 -82.2803 WLCW2 Tug Fork River at Welch WV 37.4412 -81.5994 WLGW2 Ohio River at Wheeling WV 40.0561 -80.7288 WTNW2 West Fork River at Weston WV 39.0300 -80.4700 ARVW4 Powder River near Arvada WY 44.6500 -106.1260 BBRW4 South Fork Shoshone River above Buffalo Bill Reservoir WY 44.4190 -109.2570 BCCW4 Clear Creek at Buffalo WY 44.3472 -106.6989 BCNW4 Stockade Beaver Creek near Newcastle WY 43.8588 -104.1066 BFRW4 Belle Fourche River below Moorcroft WY 44.2955 -104.9763 BHBW4 Big Horn River at Basin WY 44.3833 -108.0356 BORW4 Smiths Fork near Border WY 42.2933 -110.8717 BOSW4 Laramie River near Bosler WY 41.5550 -105.6830 BPNW4 New Fork River near Big Piney WY 42.5672 -109.9250 BSRW4 Big Sandy River above Big Sandy Reservoir WY 42.3170 -109.4850 CDYW4 Shoshone River at Buffalo BIll Reservoir WY 44.5014 -109.1833 CMPW4 Beaver Creek (WY) near Four Corners WY 44.0850 -104.0600 CPRW4 North Platte River at Casper WY 42.8570 -106.3190 DONW4 Donkey Creek near Gillette WY 44.2666 -105.4380 DUBW4 Wind River near Dubois WY 43.7590 -109.7590 EVAW4 Bear River near Evanston WY 41.2703 -110.9631 FLAW4 Laramie River near Fort Laramie WY 42.2010 -104.5380 FRAW4 Pine Creek above Fremont Lake WY 43.0306 -109.7694 GBFW4 Green River below Fontenelle Dam WY 42.1000 -110.0490 GLNW4 North Platte River near Glenrock WY 42.8360 -105.7690 GRRW4 Green River at Green River WY 41.5160 -109.4480 GYBW4 Big Horn River at Greybull WY 44.4830 -108.0490 HANW4 Medicine Bow River near Hanna WY 42.0100 -106.5130 HMFW4 Hams Fork above Viva Naughton Reservoir WY 42.1110 -110.7090 HRNW4 Cold Springs Creek at Buckhorn WY 44.1538 -104.0775 JKSW4 Snake River near Jackson WY 43.3720 -110.7380 KEYW4 Belle Fourche River near Moorcroft WY 44.3819 -104.7791 KINW4 Wind River near Kinnear WY 43.1278 -108.7236 LABW4 Green River near La Barge WY 42.1930 -110.1620 LANW4 Middle Fork Popo Agie River near Lander WY 42.7572 -108.7978 LLRW4 Laramie River at Laramie WY 41.3280 -105.6070 LPTW4 Little Powder River near Weston WY 44.9269 -105.3527 LTAW4 Blacks Fork near Little America WY 41.5460 -109.6930 LVEW4 Big Horn River at Kane WY 44.7667 -108.1833 MEEW4 Greybull River at Meeteetse WY 44.1556 -108.8764 MFBW4 Powder River near Barnum WY 43.5778 -107.1378 NFSW4 North Fork Shoshone River at Wapiti WY 44.4792 -109.4911 ORIW4 North Platte River at Orin WY 42.6530 -105.1590 PACW4 Pacific Creek near Moran WY 43.8503 -110.5178 ROKW4 Rock Creek near Buffalo WY 44.4561 -106.8783 RVTW4 Little Wind River near Riverton WY 42.9400 -108.3500 SALW4 Salt River near Etna WY 43.0800 -111.0370 SBDW4 Wind River at Boysen Reservoir WY 43.4153 -108.1833 SLOW4 Shoshone River near Lovell WY 44.8386 -108.4344 SRAW4 North Platte River at Saratoga WY 41.4550 -106.8040 STNW4 Stonepile Creek near Gillette WY 44.2677 -105.4380 SXXW4 Powder River at Sussex WY 43.6956 -106.3067 TFLW4 Lamar River at Tower Falls WY 44.9278 -110.3931 WBRW4 Green River at Warren Bridge WY 43.0189 -110.1175 WDRW4 Wind River at Riverton WY 43.0200 -108.3761 WODW4 Laramie River at Woods Landing WY 41.1380 -105.9800 WRCW4 Wind River above Red Creek WY 43.4400 -109.4580 YLOW4 Yellowstone River at Fishing Bridge WY 44.5675 -110.3800