NWSLI River Name Proximity Station Name State Name Latitude Longitude AAKA2 Antler River near Antler River AK 58.85 -134.72 ABLA2 Kobuk River at Ambler AK 67.09 -157.85 ACSA2 Susitna River at Alexander Creek AK 61.42 -150.59 ALKA2 Alsek River at Walker Glacier AK 59.4 -138.08 ALLA2 Koyukuk River at Allakaket AK 66.57 -152.64 APBA2 Anchor River at Anchor Point AK 59.77 -151.84 APTA2 Anchor River at New Sterling Hwy AK 59.75 -151.75 ARAA2 Anvik River near Anvik AK 62.67 -160.23 ATRA2 Atigun River near Pump Station 4 AK 68.22 -149.4 BCTA2 Birch Creek above 12 Mile Creek AK 65.38 -145.7 BETA2 Kuskokwim River at Bethel AK 60.8 -161.75 BGDA2 Tanana River at Big Delta AK 64.16 -145.84 BTTA2 Koyukuk River at Bettles AK 66.92 -151.5 BVRA2 Yukon River at Beaver AK 66.37 -147.42 CCTA2 Copper River near Chitina AK 61.5144 -144.4322 CCVA2 Colville River at Colville Village AK 70.43 -150.41 CHAA2 Chatanika River at Elliot Hwy Bridge AK 65.09 -147.72 CHFA2 Chena River at Fairbanks AK 64.85 -147.7 CHLA2 Little Chena River at Chena Hot Springs Road AK 64.89 -147.25 CHRA2 Chester Creek at Arctic Blvd AK 61.21 -149.83 CIRA2 Yukon River at Circle AK 65.83 -144.06 CJXA2 Kuskokwim River at Crooked Creek AK 61.87 -158.1 CKTA2 Chilkat River near Klukwan AK 59.42 -135.88 CLKA2 Chelatna Lake near Lake Outlet AK 62.43 -151.41 COCA2 Cooper Creek at mouth near Cooper Landing AK 60.48 -149.88 COOA2 Kenai River at Cooper Landing AK 60.49 -149.81 CRHA2 Chena River near Hunts Creek AK 64.86 -146.8 CRNA2 Chisana River at Northway Road Bridge AK 63.01 -141.8 CRSA2 Chatanika River at Steese Hwy Bridge AK 65.19 -147.25 CRUA2 Colville River at Umiat AK 69.37 -152.83 CSRA2 Campbell Creek at Canyon Mouth AK 61.15 -149.72 CTEA2 Crooked Creek at Central AK 65.57 -144.77 CTOA2 Chistochina River near Glennallen AK 62.605 -144.6333 DCKA2 Dahl Creek near Kobuk AK 66.95 -156.91 DELA2 Delta River near Paxon AK 63.2 -145.8 EKLA2 Eklutna Lake near Eklutna AK 61.4 -149.12 ENNA2 Tanana River at Nenana AK 64.57 -149.09 EOGA2 Eklutna River at old Glenn Hwy near Eklutna AK 61.45 -149.37 ERBA2 Eagle River at Glenn Hwy Bridge AK 61.31 -149.56 FCKA2 Fish Creek near Ketchikan AK 55.39 -131.19 FLSA2 Falls Creek near Petersburg AK 56.68 -132.92 FMKA2 Fortymile River at Walker Fork AK 64.08 -141.63 FMMA2 Fortymile River at Mosquito Fork AK 64.07 -142 FMRA2 Fortymile River at Taylor Hwy AK 64.27 -141.3 FMSA2 Fortymile River at South Fork AK 64.05 -141.77 FMWA2 Fortymile River at West Fork AK 63.88 -142.23 GAKA2 Gakona River at Tok Cutoff Bridge AK 62.31 -145.17 GBDA2 Goodpaster River near Big Delta AK 64.45 -144.94 GCGA2 Glacier Creek at Girdwood AK 60.96 -149.13 GCJA2 Gold Creek above Juneau AK 58.29 -134.4 GCSA2 Susitna River at Gold Creek AK 62.77 -149.69 GLCA2 Glacier Creek in Seward at Bruno Road AK 60.17 -149.33 GPOA2 Gulkana River at Paxson Lake Outlet AK 62.68 -145.62 GROA2 Grouse Lake at Grouse Creek AK 60.22 -149.35 GRSA2 Gulkana River at Sourdough AK 62.52 -145.53 GULA2 Gulkana River at Richardson Highway Bridge AK 62.27 -145.38 GYRA2 Yukon River at Galena AK 64.74 -156.93 HNRA2 Nenana River at Healy AK 63.85 -148.94 HOCA2 Hobo Creek near Petersburg AK 56.63 -132.87 HODO3 Hood River near Hood River AK 45.6547 -121.5494 HRWA2 Harding River near Wrangell AK 56.22 -131.63 HUSA2 Koyukuk River at Huslia AK 65.4192 -156.2383 IKPA2 Ikpikpuk River near Barrow AK 69.46 -154.39 ILRA2 Iliamna River near Pedro Bay AK 59.75 -153.83 JDCA2 Jordan Creek near Juneau AK 58.36 -134.58 JORA2 Johnson River near Tuxedni Bay AK 60.09 -152.91 KDKA2 Terror River near Kodiak AK 57.69 -153.16 KEYA2 Kenai River at Kenai Keys AK 60.53 -150.6 KIAA2 Kobuk River at Kiana AK 66.97 -160.13 KIGA2 Kvichak River at Igiugig AK 59.33 -155.09 KLCA2 Kuskokwim River at Liskys Crossing AK 62.05 -156.22 KLUA2 Klutina River near Glennallen AK 61.9528 -145.3064 KNKA2 Knik River at Old Glenn Hwy AK 61.5 -149.04 KOWA2 Kroto Creek at Oilwell Road AK 62.1273 -150.266 KRAA2 Kuskokwim River at Aniak AK 61.58 -159.52 KRGA2 Kahtaheena River near Gustav AK 58.42 -135.6 KRHA2 Koyukuk River at Hughes AK 66.03 -154.27 KRKA2 Kenai River below Killey River AK 60.5 -150.67 KUPA2 Kuparuk River near Deadhorse AK 70.28 -148.96 LIGA2 Lignite Creek near Healy AK 63.9 -148.98 LSHA2 Little Susitna R at Parks Hwy Bridge AK 61.63 -149.8 LSOA2 Little Susitna R at Hatcher Pass Rd Bridge AK 61.7 -149.23 LSUA2 Little Susitna R below Hatcher Pass Bridge AK 61.71 -149.23 MACA2 MacLaren River at Denali Hwy AK 63.07 -146.32 MAGA2 Matanuska River at Glacier Park Resort AK 61.78 -147.81 MATA2 Matanuska River at Old Glenn Hwy AK 61.56 -149.03 MCAA2 Montana Creek at Mendenhall Loop Bridge AK 58.4 -134.62 MCDA2 Chena River near Chena Lakes AK 64.8 -147.22 MCGA2 Kuskokwim River at McGrath AK 62.96 -155.59 MDBA2 Copper River at Million Dollar Bridge AK 60.67 -144.75 MFKA2 Koyukuk River near Wiseman AK 67.43 -150.08 MHSA2 Tanana River at Manley Hot Springs AK 65 -150.62 MNBA2 Mendenhall River at Mendenhall Loop Bridge AK 58.4 -134.58 MNDA2 Mendenhall Lake at Lake Level AK 58.56 -134.42 MONA2 Montana Creek at Parks Highway Bridge AK 62.1 -150.06 MOWA2 Moose Creek at Oilwell Road AK 62.1273 -150.266 MPTA2 Trail River at Old Seward Hwy Bridge AK 60.43 -149.37 MXYA2 Kennicott River at McCarthy AK 61.43 -142.94 NEBA2 Nabesna River at Northway Village AK 62.97 -141.95 NELA2 Little Nelchina River at Glenn Hwy AK 62.0833 -146.9833 NINA2 Ninilchik River at Ninilchik Road Bridge AK 60.04 -151.61 NRDA2 Nuyakuk River near Dillingham AK 59.94 -158.19 NSHA2 Nushagak River at Ekwok AK 59.35 -157.47 NUIA2 Fish Creek near Nuiqsut AK 70.27 -151.87 NULA2 Yukon River at Nulato AK 64.73 -158.08 OBRA2 O'Brien Creek near Chicken AK 64.32 -141.42 OBUA2 Kobuk River at Kobuk AK 66.9 -156.8667 PHLA2 Phelan Creek near base of Gulkana Glacier AK 63.23 -145.43 PRBQ9 Porcupine River near Canada Border AK 67.43 -140.88 RBYA2 Yukon River at Ruby AK 64.74 -155.48 RCBA2 Russell Creek near Cold Bay AK 55.18 -162.69 RESA2 Resurrection River at Exit Glacier Bridge AK 60.19 -149.59 RLKA2 Russell Lake near Yakutat AK 59.92 -139.37 SALA2 Salcha River at Richardson Hwy Bridge AK 64.47 -146.92 SCCA2 Sinona Creek near Chistochina AK 62.58 -144.65 SCKA2 Staney Creek near Klawock AK 55.8 -133.11 SGRA2 Sagavanirktok River at Pump Station #3 AK 69.02 -148.82 SHIA2 Ship Creek above Glenn Hwy AK 61.23 -149.63 SIXA2 Sixmile Creek near Hope AK 60.82 -149.43 SKGA2 Skagway River at Skagway River Bridge AK 59.47 -135.28 SKLA2 Kenai River below Skilak Lake AK 60.47 -150.6 SKWA2 Skwentna River at Skwentna AK 61.96 -151.17 SNKA2 Snake River at Nome AK 64.56 -165.51 SNOA2 Snow River near Seward AK 60.29 -149.34 SPRA2 Spruce Creek near Seward AK 60.07 -149.45 SRRA2 Resurrection River at Seward Hwy Bridge AK 60.14 -149.42 SRYA2 Situk River near Yakutat AK 59.58 -139.5 STJQ1 Lake Champlain/Richelieu River at St. Jean AK 45.3015 -73.25 STKA2 Stikine River near Mouth AK 56.71 -132.13 STRA2 Starrigavan Creek near Sitka AK 57.13 -135.33 SUNA2 Susitna River at Parks Hwy Bridge AK 62.17 -150.17 SXRA2 Kenai River at Soldotna AK 60.48 -151.09 TAFA2 Tanana River at Fairbanks AK 64.79 -147.84 TALA2 Yukon River at Tanana AK 65.17 -152.07 TAZA2 Tazlina River at Richardson Hwy Bridge AK 62.06 -145.43 TKTA2 Talkeetna River at Railroad Bridge AK 62.33 -150.12 TKUA2 Taku River near Canada Border AK 58.54 -133.7 TLMO3 Wilson River near Tillamook AK 45.485 -123.689 TONA2 Tonsina River at Richardson Hwy Bridge AK 61.66 -145.18 TRPA2 Twentymile River near Portage AK 60.89 -148.92 TRTA2 Talkeetna River near Talkeetna above RR Bridge AK 62.33 -150 TSGA2 Tanana River at Tanacross AK 63.38 -143.34 TYAA2 Taiya River near Skagway AK 59.52 -135.42 UCHA2 Chena River at Mile 40 Bridge AK 64.9 -146.42 UNRA2 Upper Nuka River near Park Boundary AK 59.68 -150.7 UPEA2 Upper Earl West Creek near Wrangell AK 56.28 -132.13 URUA2 Unalakleet River above Chiroskey River AK 63.93 -160.34 URWA2 Unuk River near Wrangell AK 56.22 -131.63 WILA2 Willow Creek at Parks Highway AK 61.77 -150.06 WLCA2 Wolverine Creek near Lawing AK 60.37 -148.9 WLWA2 Willow Creek near Willow AK 61.78 -149.88 WMCA2 Wiseman Creek at Wiseman AK 67.42 -150.12 WULA2 Wulik River below Tutak Creek AK 67.86 -163.67 YDAQ9 Yukon River at Dawson AK 64.05 -139.11 YEAA2 Yukon River at Eagle AK 64.79 -141.2 YFYA2 Yukon River at Fort Yukon AK 66.56 -145.28 YLKA2 Yentna River at Lake Creek AK 61.9 -150.92 YPSA2 Yukon River at Pilot Station AK 61.93 -162.88 YRBA2 Yukon River at the bridge near Stevens Village AK 65.88 -149.72 ARKA1 Black Warrior River at Smith Dam AL 33.938889 -87.107445 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 33.21 -88.2878 BCKA1 Mobile River at Barry Steam Plant AL 31.01 -88.01 BELA1 Choctawhatchee River near Bellwood AL 31.15 -85.78 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 34.67 -87.32 BSBA1 Flint River at Brownsboro AL 34.7492 -86.4467 BWMA1 Murder Creek at Brewton AL 31.11 -87.07 BWTA1 Conecuh River at Brewton AL 31.07 -87.06 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 34.82 -86.48 CKLA1 Cahaba River at Centreville AL 32.945 -87.1392 CLBA1 Alabama River near Claiborne Dam AL 31.61 -87.56 CLDA1 Tombigbee River near Coffeeville Dam AL 31.75 -88.13 CLTA1 Coosa River at Lay Dam AL 32.9627 -86.5175 COLA1 Chattahoochee River at George W. Andrews L&D AL 31.25 -85.11 CRDA1 Black Warrior River at Cordova AL 33.7575 -87.170278 CREA1 Coosa River at Weiss Dam AL 34.1333 -85.8 CRRA1 Tallapoosa River at Yates Dam AL 32.5716 -85.8895 DECA1 Tennessee River at Decatur AL 34.61 -86.97 DLDA1 Tombigbee River at Demopolis Lock and Dam AL 32.5208 -87.88 ELBA1 Pea River at Elba AL 31.41 -86.06 ENSA1 Village Creek at Avenue W in Ensley AL 33.5175 -86.8792 FLMA1 Big Escambia Creek at Flomaton AL 31.01 -87.26 FLOA1 Tennessee River at Florence AL 34.79 -87.67 FSHA1 Fish River near Silverhill AL 30.54 -87.8 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 31.04 -85.85 HBPA1 Tallapoosa River at Horseshoe Bend AL 32.9772 -85.7397 LRYA1 Tombigbee River near Leroy AL 31.49 -87.91 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 32.1 -87.4 NEWA1 Choctawhatchee River near Newton AL 31.34 -85.61 RGLA1 Coosa River at Neely Henry Dam AL 33.7842 -86.0531 RVFA1 Conecuh River at River Falls AL 31.35 -86.53 SARA1 Bayou Sara at Saraland AL 30.82 -88.07 SAYA1 Locust Fork at Sayre AL 33.7097 -86.9833 SELA1 Alabama River at Selma AL 32.41 -87.0153 SSNA1 Pea River near Samson AL 31.11 -86.09 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 -86.45 WDLA1 Tallapoosa River at Wadley AL 33.1167 -85.5608 WDVA1 Paint Rock River near Woodville AL 34.62 -86.31 WETA1 Coosa River at Wetumpka AL 32.5606 -86.1869 WHIA1 Tennessee River at Whitesburg AL 34.57 -86.56 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 34.121 -93.046 AUGA4 White River above Augusta AR 35.29 -91.388 BAGA4 White River at Batesville AR 35.76 -91.641 BHTA4 Little Missouri River near Boughton AR 33.878 -93.304 BKRA4 Black River at Black Rock AR 36.104 -91.097 BRYA4 Kings River near Berryville AR 36.427 -93.621 BTNA4 Saline River at Benton AR 34.568 -92.611 CALA4 Ouachita River at Thatcher L&D AR 33.302 -92.462 CAMA4 Ouachita River at Camden AR 33.596 -92.818 CLDA4 White River at Clarendon AR 34.686 -91.315 CLRA4 White River at Calico Rock AR 36.116 -92.143 CRGA4 Black River at Corning AR 36.402 -90.541 DANA4 Petit Jean River at Danville AR 35.059 -93.396 DARA4 Arkansas River at Dardanelle AR 35.226 -93.149 DEQA4 Cossatot River near DeQueen AR 34.05 -94.2167 DIRA4 Saline River near Dierks AR 34.0844 -94.0958 DQNA4 Rolling Fork near DeQueen AR 34.0453 -94.4139 DSCA4 White River at Des Arc AR 34.977 -91.493 FELA4 Ouachita River at Felsenthal Lock and Dam AR 33.0881 -92.0881 FLTA4 Red River at Fulton AR 33.6203 -93.821 GEOA4 White River at Georgetown AR 35.127 -91.448 GLBA4 Buffalo River at Gilbert AR 35.986 -92.715 GRVA4 Fourche LaFave River near Gravelly AR 34.873 -93.657 HEEA4 Mississippi River at Helena AR 34.52 -90.59 HRGA4 Little River at Horatio AR 33.9194 -94.3875 HUSA4 Fourche LaFave River near Houston AR 35.012 -92.723 IMBA4 Spring River at Imboden AR 36.205 -91.172 INGA4 Red River at Index AR 33.5519 -94.0411 JUDA4 Little Red River at Judsonia AR 35.267 -91.64 LCKA4 Saline River near Lockesburg AR 33.9619 -94.0611 LCRA4 St. Francis River at Lake City AR 35.83 -90.44 LITA4 Arkansas River at Little Rock AR 34.75 -92.274 MLBA4 Mulberry River near Mulberry AR 35.627 -94.016 MORA4 Arkansas River at Morrilton AR 35.128 -92.732 MSNA4 St. Francis River at Madison AR 35.0106 -90.7181 NPTA4 White River at Newport AR 35.605 -91.289 OZGA4 Arkansas River at Ozark L/D TW AR 35.483 -93.833 PBFA4 Arkansas River at Pine Bluff AR 34.291 -91.987 PFAA4 Arkansas River at Pendleton AR 33.978 -91.384 PLGA4 L'Anguille River at Palestine AR 34.97 -90.89 POCA4 Black River at Pocahontas AR 36.254 -90.97 PTTA4 Cache River at Patterson AR 35.269 -91.238 RDTA4 Ouachita River at Remmel Dam Below Jones Mill AR 34.431 -92.881 RIGA4 Right Hand Chute Little River at Rivervale AR 35.66 -90.33 RVSA4 Eleven Point River at Ravenden Springs AR 36.347 -91.113 RYEA4 Saline River at Rye AR 33.701 -92.026 SBFA4 Red River at Sprinbank Ferry AR 33.081 -93.8617 SCHA4 White River at St. Charles AR 34.3763 -91.125 SFRA4 St. Francis River at St. Francis AR 36.46 -90.14 SJOA4 Buffalo River near St Joe AR 35.984 -92.746 TODA4 Arkansas River at Toad Suck L&D AR 35.075 -92.535 VBRA4 Lee Creek near Van Buren LCR AR 35.484 -94.393 VBUA4 Arkansas River at Van Buren AR 35.431 -94.356 AFRA3 Agua Fria River near Rock Springs AZ 34.02 -112.17 ALMA3 Bill Williams River at Alamo Lake AZ 34.2167 -113.6167 BNMA3 Bonita Creek near Morenci AZ 32.96 -109.53 BRTA3 Verde River at Bartlett Lake AZ 33.8181 -111.6311 BWTA3 Brawley Wash near Three Points AZ 32.076 -111.338 CAVA3 Cave Creek near Cave Creek AZ 33.8872 -111.9533 CCCA3 Chinle Creek at Chinle AZ 36.155 -109.5381 CCMA3 Chinle Creek near Mexican Water AZ 36.95 -109.7167 CLDA3 Gila River below Coolidge Dam AZ 33.18 -110.53 CSCA3 Santa Cruz River at Cortaro AZ 32.35 -111.09 DUUA3 Gila River at Duncan AZ 32.72 -109.1 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 32.76 -114.42 GLCA3 Gila River near Calva AZ 33.186 -110.219 GLHA3 Gila River near Solomon AZ 32.87 -109.51 GLKA3 Gila River at Kelvin AZ 33.1 -110.98 GRCA3 Granite Creek near Prescott AZ 34.57 -112.45 GRMA3 Gila River near Maricopa AZ 33.17 -112.01 HAMA3 Hassayampa River near Morristown AZ 33.89 -112.66 HSTA3 Hassayampa River near Arlington AZ 33.3472 -112.725 LCCA3 Little Colorado River near Cameron AZ 35.8778 -111.4111 LCJA3 Little Colorado River near Joseph City AZ 34.9 -110.25 LCSA3 Little Colorado River near St Johns AZ 34.4506 -109.3617 LCWA3 Little Colorado River near Winslow AZ 35.01 -110.65 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 -111.6 PRKA3 Gila River at Painted Rock Lake AZ 33.0667 -113.0167 PUCA3 Rio Puerco near Chambers AZ 35.1833 -109.45 SAPA3 San Pedro River at Charleston AZ 31.63 -110.17 SCCA3 Santa Cruz River at Green Valley AZ 31.87 -110.98 SFCA3 San Francisco River at Clifton AZ 33.05 -109.3 SFFA3 Salt River at 51st Ave-Phoenix AZ 33.4 -112.17 SLCA3 Salt River near Chrysotile -Salt River Canyon AZ 33.8 -110.5 SLPA3 Salt River at Priest Road-Tempe AZ 33.43 -111.96 SLRA3 Salt River near Roosevelt AZ 33.62 -110.92 SMBA3 Santa Maria River near Bagdad AZ 34.3 -113.3333 SPPA3 San Pedro River near Palominas AZ 31.38 -110.11 SPRA3 San Pedro River near Redington AZ 32.3806 -110.4458 SPTA3 San Pedro River near Tombstone AZ 31.751 -110.201 STBA3 Santa Cruz River near Tubac AZ 31.613 -111.041 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 33.98 -111.3028 TSCA3 Santa Cruz River at Congress Street AZ 32.22 -110.98 VDCA3 Verde River near Clarkdale AZ 34.85 -112.0667 VEVA3 Verde River near Camp Verde AZ 34.4483 -111.7892 WKPA3 Big Sandy River near Wikieup AZ 34.47 -113.62 NFFQ2 North Fork Flathead River at "Flathead, British Columbia" BC 49 -114.48 APCC1 Napa River near Napa CA 38.3683 -122.3022 ARCC1 Mad River near Arcata CA 40.92 -124.07 AROC1 Pajaro River at Chittenden CA 36.9003 -121.5967 ATIC1 Sacramento-San Joaquin Delta at Antioch CA 38.018 -121.802 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 40.48 -123.89 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 41.406 -120.927 CREC1 Smith River near Crescent City CA 41.79 -124.07 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 40.62 -124.2 FSNC1 San Diego River at Fashion Valley CA 32.77 -117.17 FTDC1 Smith River near Fort Dick CA 41.88 -124.13 FTJC1 Scott River near Fort Jones CA 41.641 -123.014 FTSC1 Eel River at Fort Seward CA 40.22 -123.63 GARC1 Sisquoc River at Garey CA 34.89 -120.31 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 41.835 -123.382 HEAC1 Russian River near Healdsburg CA 38.6133 -122.8353 HOOC1 Trinity River near Hoopa CA 41.05 -123.67 HOPC1 Russian River near Hopland CA 39.03 -123.13 IRGC1 Klamath River below Iron Gate Dam CA 41.928 -122.443 KLMC1 Klamath River near Klamath CA 41.51 -124 LSBC1 Yolo Bypass at Lisbon CA 38.475 -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 38.05 -121.85 MOSC1 San Joaquin River at Mossdale Bridge CA 37.7861 -121.3058 MRNC1 South Fork Eel River near Miranda CA 40.18 -123.77 NCOC1 Feather River at Nicolaus CA 38.8911 -121.6039 NRWC1 Santa Ynez River at Narrows CA 34.64 -120.42 NVRC1 Navarro River at Navarro CA 39.17 -123.67 NWMC1 San Joaquin River at Newman CA 37.35 -120.98 OBBC1 Stanislaus River at Orange Blossom Bridge CA 37.7831 -120.75 ONSC1 Klamath River at Orleans CA 41.3 -123.53 ORFC1 Sacramento River at Ord Ferry CA 39.6278 -121.9914 ORIC1 Redwood Creek at Orick CA 41.3 -124.05 PATC1 San Joaquin River at Patterson CA 37.4939 -121.0811 PLYC1 South Fk Pit River near Likely CA 41.231 -120.436 POHC1 Merced River at Pohono Bridge CA 37.72 -119.67 PRBC1 Salinas River at Paso Robles CA 35.63 -120.69 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 38.89 -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 41.378 -123.476 SCOC1 Eel River near Scotia CA 40.49 -124.1 SEIC1 Klamath River near Seiad Valley CA 41.854 -123.231 SESC1 Sespe Creek near Fillmore CA 34.4508 -118.925 SHEC1 Napa River near St. Helena CA 38.5 -122.4333 SLOC1 San Luis Rey River at Oceanside CA 33.22 -117.36 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 37.37 -120.93 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 38.05 -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 38.727222 -121.806111 YREC1 Shasta River near Yreka CA 41.823 -122.594 YUBC1 Feather River at Yuba City CA 39.1389 -121.6047 ADLC2 Arkansas River at Avondale CO 38.2481 -104.3986 ALAC2 Rio Grande River at Alamosa CO 37.4811 -105.8794 ALEC2 East River at Almont CO 38.664 -106.847 ALTC2 Taylor River at Almont CO 38.6644 -106.8447 APNC2 Roaring Fork River near Aspen CO 39.18 -106.801 ARCC2 Arkansas River at Rocky Ford CO 38.0644 -103.69 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 39.239 -108.267 CBGC2 Colorado River near Granby CO 40.1208 -105.9 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 38.331 -107.779 CMRC2 Cimarron River near Cimarron CO 38.257 -107.546 CNCC2 Arkansas River at Canon City CO 38.4339 -105.2567 CSLC2 Colorado River near CO-UT State Line CO 39.133 -109.026 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 38.753 -108.078 DNRC2 Rio Grande River 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 37.279 -107.88 DRMC2 Dolores River below McPhee Resv. CO 37.5758 -108.5758 DRRC2 Dolores River near Rico CO 37.639 -108.06 EGLC2 Colorado River near Dotsero CO 39.644 -107.077 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 -106.673 GCOC2 Colorado River above Glenwood Springs CO 39.555 -107.337 GJNC2 Gunnison River near Grand Junction CO 38.9833 -108.45 GLDC2 Clear Creek at Golden CO 39.7531 -105.2347 GPSC2 Eagle River at Gypsum CO 39.649 -106.953 GRPC2 Cache La Poudre River near Greeley CO 40.4178 -104.6394 GUSC2 Gunnison River near Gunnison CO 38.542 -106.949 GWSC2 Roaring Fork River at Glenwood Springs CO 39.544 -107.329 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 -103.2 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 37.383 -107.577 LXHC2 Arkansas River at La Junta CO 37.9906 -103.5319 MBLC2 Yampa River near Maybell CO 40.503 -108.029 MNRC2 Mancos River near Mancos CO 37.354 -108.261 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 39.183 -108.267 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 37.266 -107.01 PTRC2 Purgatoire River at Trinidad CO 37.1722 -104.5075 RCYC2 Crystal River near Redstone CO 39.249 -107.227 RERC2 Eagle River at Redcliff CO 39.5083 -106.3661 SALC2 Arkansas River at Salida CO 38.5458 -106.01 SCCC2 Surface Creek at Cedaredge CO 38.902 -107.921 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 38.042 -108.132 SNCC2 Surface Creek near Cedaredge CO 38.985 -107.854 SPTC2 South Platte River at South Platte CO 39.4092 -105.1694 STMC2 Yampa River at Steamboat Springs CO 40.484 -106.832 UCRC2 Uncompahgre River near Ridgway CO 38.184 -107.745 UNRC2 Uncompahgre River below Ridgway Reservoir CO 38.238 -107.759 WFRC2 Williams Fork near Parshall CO 40.035 -106.2047 WNAC2 South Platte River near Weldona CO 40.3219 -103.9214 WRMC2 White River near Meeker CO 40.034 -107.862 WSVC2 Arkansas River at Wellsville CO 38.5025 -105.9392 BEAC3 Naugatuck River above Beacon Falls CT 41.442222 -73.063055 BKFC3 Still River at Route 7 at Brookfield Center CT 41.4661 -73.4036 FLVC3 Housatonic River at Falls Village CT 41.9572 -73.3697 GAYC3 Housatonic River at Gaylordsville CT 41.653 -73.4902 HFDC3 Connecticut River at Hartford CT 41.7694 -72.6678 JCYC3 Quinebaug River above Jewett City CT 41.597778 -71.984722 MDDC3 Connecticut River at Middletown CT 41.5611 -72.6119 QPCC3 Quinnipiac River above Southington CT 41.601667 -72.884167 SBYC3 Pomperaug River above Southbury CT 41.480556 -72.225 SIMC3 Farmington River at Simsbury CT 41.867 -72.8 STVC3 Housatonic River at Stevenson CT 41.38 -73.17 TARC3 Farmington River at Tariffville CT 41.92 -72.7697 TMVC3 Connecticut River at Thompsonville CT 41.9872 -72.6058 UNVC3 Farmington River at Unionville CT 41.73 -72.88 WALC3 Quinnipiac River above Wallingford CT 41.449444 -72.841389 WATC3 Naugatuck River above Waterbury CT 41.543055 -73.041666 WLMC3 Shetucket River at Willimantic CT 41.7 -72.15 YTCC3 Yantic River at Yantic CT 41.5586 -72.1219 GTND2 Potomac River at Washington-Wisconsin Ave DC 38.902 -77.063 CHBD1 Christina River at Coochs Bridge near Newark 3S DE 39.6372 -75.7283 DPKD1 White Clay Creek near Newark 4E DE 39.6992 -75.675 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 30.53 -85.15 APAF1 Apalachicola River at Apalachicola Bay (Tide Gage) FL 29.7183 -84.9692 ARCF1 Peace River at Arcadia FL 27.22 -81.88 ARHF1 Horse Creek near Arcadia FL 27.2 -81.99 BAKF1 Blackwater River near Baker FL 30.83 -86.74 BARF1 Peace River at Bartow FL 27.9 -81.82 BFDF1 Suwannee River at Branford FL 29.9556 -82.9278 BLOF1 Apalachicola River near Blountstown FL 30.423 -85.03 BLXF1 Ochlockonee River near Bloxham FL 30.38 -84.65 BRPF1 Perdido River near Barrineau Park FL 30.69 -87.44 BRUF1 Choctawhatchee River near Bruce-Ebro FL 30.45 -85.89 CARF1 Choctawhatchee River at Caryville FL 30.77 -85.82 CHAF1 Apalachicola River at Chattahoochee FL 30.7 -84.85 CONF1 Ochlockonee River near Concord FL 30.6689 -84.3053 CRMF1 Withlacoochee River at Croom FL 28.59 -82.23 CRVF1 Shoal River near Crestview FL 30.7 -86.57 CTYF1 Escambia River near Century FL 30.96 -87.23 DLAF1 St. Johns River other near Deland FL 29.0081 -81.3828 DNLF1 Withlacoochee River at Dunnellon FL 29.05 -82.47 DOUF1 Suwannee River at Dowling Park FL 30.25 -83.25 ECOF1 Econfina River near Perry FL 30.1706 -83.8239 ELFF1 Anclote River at Elfers FL 28.21 -82.67 ELLF1 Suwannee River at Ellaville FL 30.38 -83.17 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 28.05 -82.37 FTWF1 Santa Fe River near Hildreth FL 29.91 -82.86 FWBF1 Suwannee River at Fowlers Bluff FL 29.39 -83.02 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 28.99 -82.35 HVNF1 Ochlockonee River near Havana FL 30.55 -84.38 JBDF1 Ochlockonee River at Lake Talquin-Jackson Bluff Dam FL 30.3875 -84.6431 LAMF1 Aucilla River at Lamont FL 30.36 -83.8 LIKF1 Suwannee River near Suwannee Springs FL 30.39 -82.93 LITF1 Alafia River at Lithia FL 27.87 -82.21 LURF1 Suwannee River at Luraville FL 30.09 -83.17 MACF1 St. Marys River near Macclenny FL 30.36 -82.08 MALF1 Chipola River at Marianna FL 30.77 -85.21 MDLF1 Black Creek near Middleburg FL 30.08 -81.86 MHDF1 Shoal River near Mossy Head FL 30.7958 -86.3069 MKCF1 Myakka River at Myakka River State Park FL 27.24 -82.31 MKHF1 Manatee River at Myakka Head FL 27.47 -82.21 MLGF1 Yellow River at Milligan FL 30.75 -86.63 MLNF1 Big Coldwater Creek near Milton FL 30.71 -86.97 MORF1 Hillsborough River at Morris Bridge FL 28.1 -82.31 MTDF1 Manatee River at Manatee Dam FL 27.48 -82.35 MTSF1 Suwannee River at Manatee Springs FL 29.48 -82.97 NEPF1 St. Marks River near Newport FL 30.26 -84.15 NUTF1 Aucilla River near Mouth near Nutall Rise FL 30.1122 -83.98 PINF1 Withlacoochee River near Pinetta FL 30.59 -83.25 PITF1 Choctawhatchee River near Pittman FL 30.94 -85.84 PLMF1 Palmdale FishEating Creek at PalmDale FL 26.933 -81.317 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 27.51 -82.37 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 30.12 -84.49 STEF1 Steinhatchee River near Cross City FL 29.7863 -83.32166 TRBF1 Withlacoochee River at Trilby FL 28.48 -82.18 TREF1 Santa Fe River at Three Rivers Estates FL 29.95 -82.8 VRNF1 Holmes Creek at Vernon FL 30.62658 -85.71243 WAHF1 Apalachicola River at Wewahitchak at Mile 44 (USACE) FL 30.1339 -85.1442 WCXF1 Suwannee River near Wilcox FL 29.58 -82.93 WDRF1 Apalachicola River at Lake Seminole (USACE) FL 30.71 -84.86 WIMF1 Little Manatee River at Wimauma FL 27.67 -82.35 WRGF1 Cypress Creek at Worthington Gardens FL 28.18 -82.4 WSPF1 Suwannee River at White Springs FL 30.33 -82.74 WWAF1 Apalachicola River at Mile 35 FL 30.0861 -85.1353 ZFSF1 Peace River at Zolfo Springs FL 27.5 -81.8 ZPHF1 Hillsborough River near Zephyrhills FL 28.15 -82.23 AANG1 Peachtree Creek at Atlanta GA 33.82 -84.41 ABBG1 Ocmulgee River at Abbeville GA 31.9381 -83.3078 ABNG1 Flint River at Albany GA 31.59 -84.14 ACDG1 Middle Oconee River near Arcade GA 34.03 -83.56 ADLG1 Little River near Adel GA 31.15 -83.54 AGSG1 Savannah River at Augusta 5th St GA 33.48 -81.95 APHG1 Big Creek near Alpharetta GA 34.05 -84.27 ATKG1 Satilla River at Atkinson GA 31.22 -81.87 AUGG1 Savannah River at Augusta GA 33.37 -81.94 AUSG1 Sweetwater Creek near Austell GA 33.76 -84.61 AYSG1 Satilla River near Waycross GA 31.24 -82.32 BAXG1 Altamaha River near Baxley GA 31.94 -82.35 BFYG1 Savannah River at Burton's Ferry GA 32.94 -81.5 BGEG1 Flint River at Bainbridge GA 30.91 -84.58 BVLG1 Turkey Creek near Byromville GA 32.1956 -83.9008 BWKG1 Apalachee River near Bostwick GA 33.78 -83.47 CARG1 Broad River near Carlton GA 34.0733 -83.0033 CHRG1 Altamaha River at Charlotte GA 31.95 -82.53 CLUG1 Flint River near Culloden GA 32.72 -84.23 CLYG1 Savannah River at Clyo GA 32.53 -81.26 CMUG1 Chattahoochee River at Columbus GA 32.44 -84.98 CNNG1 Etowah River at Canton GA 34.24 -84.5 CTVG1 Etowah River near Cartersville GA 34.14 -84.84 CTWG1 Big Cedar Creek at Cedartown GA 33.99 -85.26 DBNG1 Oconee River at Dublin GA 32.55 -82.9 DCTG1 Altamaha River at Doctortown GA 31.65 -81.83 DSNG1 Kinchafoonee Creek near Dawson GA 31.76 -84.25 DWSG1 Etowah River near Dawsonville GA 34.35 -84.11 EDEG1 Ogeechee River at Eden GA 32.19 -81.42 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 31.62 -85.06 FRNG1 Chattahoochee River at Franklin GA 33.2792 -85.1 GRFG1 Flint River near Griffin GA 33.2442 -84.4292 HAWG1 Ocmulgee River at Hawkinsville GA 32.27 -83.47 HDCG1 Chattahoochee River at Helen GA 34.7 -83.73 IRCG1 Spring Creek near Iron City GA 31.03 -84.73 JACG1 Ocmulgee River near Jackson GA 33.3075 -83.8383 LBRG1 Ocmulgee River at Lumber City GA 31.92 -82.68 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 32.83 -83.63 MARG1 Sope Creek near Marietta GA 33.95 -84.44 MCKG1 Muckalee Creek near Leesburg GA 31.77 -84.13 MDVG1 Ogeechee River at Midville GA 32.81 -82.24 MLGG1 Oconee River at Milledgeville GA 33.09 -83.22 MNTG1 Flint River at Montezuma GA 32.3 -84.04 MOCG1 Middle Oconee River near Athens GA 33.95 -83.4 MTVG1 Oconee River near Mount Vernon GA 32.17 -82.63 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 33.87 -84.38 NCRG1 Chattahoochee River near Norcross GA 33.98 -84.2 NEWG1 Flint River at Newton GA 31.3 -84.33 NOCG1 North Oconee River at Athens GA 33.97 -83.38 OCNG1 Oconee River below Oconee GA 32.7872 -82.9572 OKFG1 Flint River near Oakfield GA 31.72 -84.101 PCTG1 Proctor Creek at Atlanta GA 33.77 -84.44 PNFG1 Oconee River near Penfield GA 33.72 -83.28 PRSG1 Kinchafoonee Creek at Preston GA 32.05 -84.54 RDBG1 Coosawattee River near Redbud GA 34.5642 -84.8331 REDG1 Ohoopee River near Reidsville GA 32.08 -82.18 REYG1 Spring Creek near Reynoldsville GA 30.87 -84.76 RFDG1 Ogeechee River at Rocky Ford GA 32.6488 -81.8408 ROEG1 Etowah River near Rome GA 1 Loop GA 34.2322 -85.1169 RSCG1 Oostanaula River at Resaca GA 34.57 -84.94 RTMG1 Oostanaula River at Rome GA 34.25 -85.17 RWLG1 Chattahoochee River near Roswell GA 33.98 -84.3 STNG1 Alapaha River at Statenville GA 30.7 -83.03 SWEG1 Suwanee Creek near Suwanee GA 34.03 -84.09 TLNG1 Conasauga River near Tilton GA 34.6667 -84.9283 TMLG1 Ochlockonee River near Thomasville GA 30.88 -84.05 UPAG1 Upatoi Creek at Fort Benning GA 32.4133 -84.82 VDSG1 Withlacoochee River near Valdosta GA 30.95 -83.2667 VING1 Chattahoochee River at Vining/Atlanta GA 33.85 -84.45 WHTG1 Chattahoochee River at Whitesburg GA 33.46 -84.89 WTPG1 Chattahoochee River at West Point GA 32.88 -85.18 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 21.4 -157.75 KNAH1 Kahana Stream near Kahana HI 21.5436 -157.8853 KNIH1 Kawainui Marsh near Levee - 64 HI 21.408 -157.755 KSFH1 Kaukonahua Stream at East pump HI 21.49 -157.99 KWGH1 Kawela Gulch near Moku HI 21.073 -156.95 NLIH1 Honolii Stream near Papaikou HI 19.7667 -155.1544 OHGH1 Oheo Gulch at Dam HI 20.68 -156.052 WEBH1 NF Wailua River near Lihue HI 22.0719 -159.4181 WHRH1 Waihee River at Dam HI 20.933 -156.55 WIEH1 Waialae Stream near Waimea HI 22.0889 -159.5717 WNIH1 Wainiha River near Hanalei HI 22.1389 -159.56 WRSH1 Wahiawa Reservoir at Spillway HI 21.5 -158.05 WSFH1 Wailua River near Lihue HI 22.04 -159.3828 WWKH1 West Wailuaiki Stream near Hana HI 20.81 -156.13 AESI4 South Skunk River near Ames IA 42.007 -93.595 AGNI4 East Fk. Des Moines River near Algona IA 43.079 -94.236 AGSI4 Skunk River at Augusta IA 40.754 -91.278 AKRI4 Big Sioux River at Akron IA 42.837 -96.563 AKWI4 South River near Ackworth IA 41.337 -93.486 ALOI4 Cedar River at Cedar River in Waterloo IA 42.496 -92.334 ALTI4 Floyd River at Alton IA 42.998 -96.017 AMEI4 South Skunk River near Ames IA 42.068 -93.619 AMWI4 Squaw Creek at Ames IA 42.023 -93.629 ANSI4 Wapsipinicon River at Anamosa Shaw Rd IA 42.0833 -91.2672 ATCI4 East Fk. Nishnabotna River near Atlantic IA 41.346 -95.077 BDFI4 102 River near Bedford IA 40.661 -94.716 BLVI4 Mississippi River at Bellevue LD12 IA 42.261 -90.422 BRII4 Skunk River at Brighton IA 41.194 -91.809 BRLI4 Mississippi River at Burlington IA 40.798 -91.094 BSSI4 Cedar Creek near Bussey IA 41.219 -92.911 CCYI4 Cedar River at Charles City IA 43.063 -92.673 CEDI4 Cedar River at Cedar Falls IA 42.539 -92.449 CFXI4 South Skunk River at Colfax IA 41.682 -93.246 CHKI4 Little Sioux River at Cherokee IA 42.746 -95.552 CHTI4 Chariton River near Chariton IA 40.953 -93.26 CIDI4 Cedar River at Cedar Rapids IA 41.971 -91.667 CJTI4 Iowa River at Columbus Jct IA 41.2783 -91.3467 CMMI4 Mississippi River at Camanche IA 41.781 -90.252 CNEI4 Cedar River near Conesville IA 41.41 -91.285 CRRI4 Little Sioux River at Correctionville IA 42.469 -95.795 DAKI4 East Fk. Des Moines River at Dakota City IA 42.724 -94.192 DBQI4 Mississippi River at Dubuque IA 42.5 -90.653 DCHI4 Upper Iowa River at Dorchester IA 43.421 -91.509 DEHI4 Upper Iowa River at Decorah IA 43.305 -91.797 DEMI4 Raccoon River at Des Moines Fleur Drive IA 41.582 -93.643 DESI4 Des Moines River at Southeast 6th IA 41.578 -93.605 DEWI4 Wapsipinicon River near DeWitt IA 41.767 -90.535 DLDI4 Mississippi River at Dubuque LD11 IA 42.541 -90.646 DMOI4 Des Moines River at 2nd Ave IA 41.612 -93.621 DMWI4 Raccoon River at Des Moines Highway 28 IA 41.5636 -93.7036 DRNI4 Little Maquoketa River near Durango IA 42.555 -90.746 DVSI4 Thompson River at Davis City IA 40.64 -93.808 EFWI4 North Fork Raccoon River near Jefferson IA 41.988 -94.377 EKDI4 Turkey River at Elkader IA 42.8433 -91.4011 EMTI4 West Fk. Des Moines River near Emmetsburg IA 43.126 -94.707 EOKI4 Mississippi River at Keokuk LD19 IA 40.398 -91.374 ESVI4 West Fk. Des Moines River at Estherville IA 43.398 -94.844 EWOI4 Little Sioux River at East/West Okoboji Lake Channel IA 43.3772 -95.1281 FNHI4 West Fk. Cedar River at Finchford IA 42.631 -92.54 FODI4 Des Moines River at Fort Dodge IA 42.506 -94.201 GRBI4 Turkey River at Garber IA 42.74 -91.262 GRMI4 Beaver Creek near Grimes IA 41.688 -93.735 GTTI4 Mississippi River at Guttenberg IA 42.785 -91.095 HAWI4 Big Sioux River at Hawarden IA 42.998 -96.498 HBTI4 West Fk. Des Moines River at Humboldt IA 42.72 -94.218 HMBI4 Nishnabotna River near Hamburg IA 40.633 -95.626 HNKI4 West Fork Nishnabotna River near Hancock IA 41.39 -95.371 HOKI4 Little Sioux River near Hornick IA 42.227 -96.078 ICLI4 Nodaway River near Clarinda IA 40.739 -95.013 IDNI4 Middle River near Indianola IA 41.424 -93.586 IDPI4 Wapsipinicon River at Independence IA 42.464 -91.895 IOWI4 Iowa River at Iowa City IA 41.657 -91.541 JANI4 Cedar River at Cedar River in Janesville IA 42.648 -92.465 JMEI4 Floyd River at James IA 42.576 -96.304 KALI4 English River near Kalona IA 41.47 -91.714 KEQI4 Des Moines River at Keosaqua IA 40.728 -91.96 LECI4 Mississippi River at LeClaire LD14 IA 41.57 -90.396 LGNI4 Boyer River at Logan IA 41.642 -95.782 LMRI4 Floyd River at Le Mars IA 42.8 -96.174 LNNI4 Little Sioux River at Linn Grove IA 42.896 -95.243 LNSI4 Mississippi River at Lansing IA 43.36 -91.213 LNTI4 Iowa River near Lone Tree IA 41.421 -91.474 MAPI4 Maple River at Mapleton IA 42.157 -95.81 MAQI4 Maquoketa River near Maquoketa IA 42.085 -90.634 MCGI4 Mississippi River at McGregor IA 43.025 -91.172 MCHI4 Maquoketa River at Manchester Hwy 20 IA 42.47 -91.448 MCWI4 Winnebago River at Winnebago River in Mason City IA 43.165 -93.192 MIFI4 Little Sioux River near Milford IA 43.3278 -95.2017 MIWI4 Iowa River at Marshalltown IA 42.066 -92.907 MOLI4 Chariton River near Moulton IA 40.692 -92.771 MRLI4 Floyd River at Merrill IA 42.718 -96.249 MROI4 Iowa River at Marengo IA 41.813 -92.064 MUSI4 Mississippi River at Muscatine IA 41.392 -91.053 NHRI4 Beaver Creek at New Hartford IA 42.573 -92.618 NRWI4 North River near Norwalk IA 41.457 -93.653 OBJI4 Milford Creek near Milford IA 43.3786 -95.1811 OOAI4 South Skunk River near Oskaloosa IA 41.356 -92.657 OTMI4 Des Moines River at Des Moines River in Ottumwa IA 41.011 -92.411 PCHI4 Perry Creek near Hinton IA 42.6344 -96.3964 PCMI4 Perry Creek near Millnerville IA 42.6936 -96.37 PRMI4 Chariton River near Promise City IA 40.801 -93.192 PROI4 North Fork Raccoon River near Perry IA 41.835 -94.132 PSGI4 Soldier River at Pisgah IA 41.831 -95.931 RAPI4 Rock River at Rock Rapids IA 43.423 -96.165 RDOI4 East Fk. Nishnabotna River at Red Oak IA 41.009 -95.241 RDPI4 West Fork Nishnabotna River near Randolph IA 40.873 -95.58 REDI4 South Fork Raccoon River near Redfield IA 41.589 -94.151 RKVI4 Rock River at Rock Valley IA 43.214 -96.294 SHLI4 Floyd River at Sheldon IA 43.196 -95.848 SHRI4 Shell Rock River near Shell Rock IA 42.712 -92.583 SIGI4 Skunk River near Sigourney IA 41.301 -92.204 SIOI4 Perry Creek at Sioux City IA 42.527 -96.403 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 43.137 -95.144 STRI4 Des Moines River near Stratford IA 42.251 -93.998 STUI4 Floyd River near Struble IA 42.924 -96.178 SXCI4 Big Sioux River at Sioux City IA 42.524 -96.481 TRCI4 Des Moines River at Tracy IA 41.281 -92.859 TURI4 Little Sioux River near Turin IA 41.964 -95.972 VINI4 Cedar River at Vinton IA 42.170556 -92.023333 VNMI4 Raccoon River at Raccoon River in Van Meter IA 41.534 -93.95 WAPI4 Iowa River at Wapello IA 41.178 -91.182 WBCI4 Boone River near Webster City IA 42.434 -93.803 AFRI1 Snake River at American Falls ID 42.7792 -112.8792 AMFI1 Snake River near Neeley ID 42.768 -112.878 ANTI1 Henrys Fork River at St Anthony ID 43.967 -111.667 BBYI1 Blackfoot River near Blackfoot ID 43.171 -112.387 BCYI1 Falls River near Ashton ID 44.186 -111.005 BFEI1 Kootenai River at Bonners Ferry ID 48.7 -116.3125 BFTI1 Snake River near Blackfoot ID 43.142 -112.518 BIGI1 Boise River at Boise ID 43.6603 -116.2781 BLFI1 Blackfoot River near Blackfoot ID 43.131 -112.476 BRFI1 South Fork Boise River at Pine ID 43.4944 -115.3056 BTSI1 South Fork Boise River at Twin Springs ID 43.6667 -115.7333 CAMI1 Weiser River at Cambridge ID 44.5797 -116.6389 CCCI1 Little Lost River at Camas ID 44.003 -112.22 CHEI1 Henrys Fork River near Chester ID 44.017 -111.567 CLDI1 St Joe River at Calder ID 47.2747 -116.188 COEI1 Coeur d'Alene River at Coeur d'Alene ID 47.6652 -116.7702 CTLI1 Coeur d'Alene River at Cataldo ID 47.5547 -116.323 DGGI1 Teton River near Driggs ID 43.783 -111.217 DRBI1 Deadwood River at Deadwood Reservoir ID 44.2917 -115.6425 DWRI1 Clearwater River at Dworshak Reservoir ID 46.515 -116.2958 EASI1 Moyie River at Eastport ID 48.9994 -116.1786 EMMI1 Payette River at Emmett ID 43.9306 -116.4417 ENVI1 Coeur d'Alene River at Enaville ID 47.5689 -116.2517 FRAI1 Falls River at Ashton ID 44.057 -111.358 GOSI1 Goose Creek near Oakley ID 42.125 -113.939 HALI1 Big Wood River at Hailey ID 43.518 -114.322 HCDI1 Snake River at Hells Canyon ID 45.2514 -116.6972 HEII1 Snake River at Heise ID 43.629 -111.676 HENI1 Henrys Fork River near Macks Inn ID 44.595 -111.349 HFAI1 Henrys Fork River near Ashton ID 44.067 -111.517 HOPI1 Pend Oreille River at Hope ID 48.2763 -116.3463 HOPW1 Palouse River at Hooper ID 46.7586 -118.1477 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 43.998 -114.02 INEI1 Big Lost River near Arco ID 43.514 -113.083 ISLI1 Henrys Fork River near Island Park ID 44.4 -111.383 KRSI1 South Fork Salmon River at Krassel Ranger Station ID 44.9872 -115.7242 LERI1 Lemhi River near Lemhi ID 44.94 -113.64 LINI1 Big Lost River near Atomic City ID 43.574 -112.94 LORI1 Snake River at Lorenzo ID 43.733 -111.883 LWOI1 Little Wood River above High 5 Creek ID 43.492 -114.058 LWRI1 Little Wood River below Reservoir ID 43.245 -114.025 MAGI1 Big Wood River near Richfield ID 43.25 -114.358 MAKI1 Big Lost River below Mackay Reservoir ID 43.939 -113.647 MCCI1 Portneuf River at McCammon ID 42.63 -112.225 MFPI1 Middle Fork Payette River at Crouch ID 44.1139 -115.9722 MIDI1 Middle Fork Salmon River at Middle Fork Lodge ID 44.7183 -115.0147 MILI1 Snake River near Milner ID 42.525 -114.018 MINI1 Snake River near Minidoka ID 42.673 -113.499 MORI1 Boise River at Mores Creek ID 43.65 -115 NPLI1 East Fork Pine Creek above Nabob Creek near Pinehurst ID 47.4766 -116.2205 ORFI1 Clearwater River at Orofino ID 46.48 -116.26 PALI1 Snake River near Irwin ID 43.351 -111.218 PEKI1 Clearwater River near Peck ID 46.5002 -116.3925 PIHI1 Portneuf River at Pocatello ID 42.874 -112.469 PINI1 Pine Creek below Amy Gulch near Pinehurst ID 47.5158 -116.24 PLDI1 Snake River at Palisades Res ID 43.364 -111.222 PLEI1 Payette River at Letha ID 43.8964 -116.6258 PLOI1 Palouse River near Potlatch ID 46.9152 -116.95 PRCI1 North Fork Coeur d'Alene River near Prichard ID 47.7072 -115.9766 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 48.2086 -116.9163 PSTI1 South Fork Coeur d'Alene River near Pinehurst ID 47.5516 -116.2369 PTYI1 Portneuf River at Tyee Lateral ID 42.944 -112.544 REXI1 Henrys Fork River near Rexburg ID 43.843 -111.904 RIGI1 Little Salmon River at Riggins ID 45.41 -116.32 RIRI1 Willow Creek near Ririe ID 43.584 -111.746 SELI1 Selway River near Lowell ID 46.09 -115.51 SHYI1 Snake River at Shelley ID 43.413 -112.134 SIFI1 Snake River near Idaho Falls ID 43.606 -112.058 SJMI1 St Joe River at St Maries ID 47.3166 -116.55 SMNI1 Salmon River at Salmon ID 45.183333 -113.89444 SNAI1 Snake River at Blackfoot ID 43.197 -112.368 SPDI1 Clearwater River at Spalding ID 46.6686 -116.8258 SPSI1 Snake River near Spring Creek near Fort Hall ID 43.05 -112.55 STII1 South Fork Clearwater River at Stites ID 46.09 -115.98 SWAI1 Snake River at Swan Falls Reservoir ID 43.2919 -116.42 TCOI1 Trapper Creek near Oakley ID 42.169 -113.972 TEAI1 Teton River near St. Anthony ID 43.927 -111.615 TOPI1 Portneuf River near Lava Hot Springs ID 42.625 -112.089 TTNI1 Teton River near Teton ID 43.9 -111.683 TTXI1 Teton River at Rexburg ID 43.833 -111.783 WEII1 Snake River at Weiser ID 44.2456 -116.98 WHBI1 Salmon River at White Bird ID 45.75 -116.32 WODI1 Little Wood River near Carey ID 43.339 -114 WSRI1 Weiser River at Weiser ID 44.2675 -116.7711 WTXI1 Willow Creek near Ririe ID 43.443 -111.727 ALGI2 Fox River at Algonquin IL 42.166 -88.29 ALNI2 Mississippi River at Alton IL 38.866 -90.181 BEAI2 Illinois River at Beardstown IL 40.017 -90.433 BRKI2 Ohio River at Brookport Lock and Dam IL 37.133 -88.65 BVDI2 Kishwaukee River at Belvidere IL 42.256 -88.864 BYRI2 Rock River at Byron IL 42.123 -89.256 CARI2 Little Wabash River at Carmi IL 38.092 -88.156 CDLI2 Sangamon River near Chandlerville IL 40.0643 -90.1512 CHBI2 Iroquois River near Chebanse IL 41.009 -87.824 CIRI2 Ohio River at Cairo IL 37 -89.162 CLAI2 Little Wabash River near Clay City IL 38.635 -88.297 CLMI2 La Moine River near Colmar IL 40.329 -90.899 CMOI2 Rock River near Como IL 41.7828 -89.7497 CNGI2 Mackinaw River at Congerville IL 40.624 -89.242 CRLI2 Kaskaskia River at Carlyle Lake IL 38.612 -89.356 DAYI2 Fox River at Dayton IL 41.384 -88.79 DEKI2 Kishwaukee River at De Kalb IL 41.931 -88.76 DNVI2 Vermilion River near Danville IL 40.101 -87.598 DSPI2 Des Plaines River near Des Plaines IL 42.082 -87.89 FEEI2 Pecatonica River at Freeport IL 42.304 -89.616 FLTI2 Mississippi River at Fulton LD13 IL 41.894 -90.157 GCTI2 Ohio River at Grand Chain Lock and Dam IL 37.204 -89.042 GENI2 Green River near Geneseo IL 41.489 -90.158 GLDI2 Mississippi River at Gladstone LD18 IL 40.885 -91.022 GOLI2 Ohio River at Golconda IL 37.358 -88.483 GREI2 Salt Creek near Greenview IL 40.134 -89.736 GRFI2 Mississippi River at Grafton IL 38.968 -90.428 GUNI2 Des Plaines River near Gurnee IL 42.344 -87.938 HARI2 Illinois River at Hardin IL 39.151 -90.571 HAVI2 Illinois River at Havana IL 40.279 -90.091 HNYI2 Illinois River at Henry IL 41.11 -89.35 HUTI2 Wabash River at Hutsonville IL 39.1342 -87.6581 ILNI2 Mississippi River at Illinois City LD16 IL 41.432 -91.015 IRQI2 Iroquois River at Iroquois IL 40.824 -87.582 JOSI2 Rock River near Joslin IL 41.559 -90.186 KHBI2 Mississippi River at Keithsburg IL 41.106 -90.959 LATI2 Rock River at Latham Park IL 42.369 -89.058 LAWI2 Embarras River at Lawrenceville IL 38.7236 -87.6644 LNMI2 Spoon River at London Mills IL 40.709 -90.281 LNRI2 Vermilion River near Leonore IL 41.208 -88.931 LSLI2 Illinois River at La Salle IL 41.317 -89.1 MCRI2 Wabash River at Mount Carmel IL 38.402 -87.7528 MLII2 Rock River at Moline IL 41.462 -90.5 MNTI2 Sangamon River at Monticello IL 40.031 -88.589 MOMI2 Kankakee River at Momence IL 41.16 -87.669 MORI2 Illinois River at Morris IL 41.354 -88.429 MROI2 Illinois River at Meredosia IL 39.823 -90.568 MURI2 Big Muddy River at Murphysboro IL 37.733 -89.367 NBOI2 Mississippi River at New Boston LD17 IL 41.192 -91.058 NLGI2 Illinois River at Lagrange IL 39.94 -90.534 OKFI2 Sangamon River near Oakford IL 40.124 -89.985 PETI2 Sangamon River at Petersburg IL 39.987 -89.864 PIAI2 Illinois River at Peoria IL 40.704 -89.566 PLMI2 Big Muddy River at Plumfield IL 37.901 -89.014 PNTI2 Vermilion River at Pontiac IL 40.878 -88.636 PRAI2 Illinois River at Peoria L&D IL 40.633 -89.625 PRYI2 Kishwaukee River near Perryville IL 42.196 -88.999 QLDI2 Mississippi River at Quincy Lock IL 39.88 -91.448 RABI2 Rock River at Rockford IL 42.289 -89.065 RCKI2 Mississippi River at Rock Island LD15 IL 41.518 -90.566 ROKI2 Rock River at Rockton IL 42.449 -89.07 RUSI2 Des Plaines River at Russell IL 42.489 -87.926 RVRI2 Des Plaines River at Riverside IL 41.822 -87.821 RVTI2 Sangamon River at Riverton IL 39.843 -89.548 SEVI2 Spoon River at Seville IL 40.486 -90.343 SHLI2 Little Calumet River at South Holland IL 41.607 -87.598 SHNI2 Ohio River at Shawneetown IL 37.7 -88.133 SIRI2 Pecatonica River near Shirland IL 42.436 -89.197 SLVI2 Kaskaskia River at Shelbyville IL 39.407 -88.781 SMLI2 Ohio River at Smithland Lock and Dam IL 37.167 -88.433 STMI2 Embarras River at Ste Marie IL 38.934 -88.024 THBI2 Mississippi River at Thebes IL 37.217 -89.464 THNI2 Thorn Creek at Thornton IL 41.568 -87.608 UINI2 Mississippi River at Quincy IL 39.943 -91.431 VALI2 Illinois River at Valley City IL 39.703 -90.645 VNDI2 Kaskaskia River at Vandalia IL 38.969 -89.089 WLMI2 Kankakee River near Wilmington IL 41.347 -88.186 WYNI2 Skillet Fork River at Wayne City IL 38.357 -88.583 ABTI3 East Fork Whitewater River at Abington IN 39.7325 -84.9597 ACTI3 Buck Creek at Acton IN 39.656944 -85.9575 ADNI3 White River at Raible Avenue in Anderson IN 40.110556 -85.710833 ALPI3 Whitewater River near Alpine IN 39.5736 -85.1583 AMTI3 Youngs Creek at Amity IN 39.418889 -86.005 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 39.871389 -86.137778 BRKI3 Whitewater River at Brookville IN 39.41 -85 CAGI3 Mill Creek at Cagles Mill Lake IN 39.487222 -86.917222 CARI3 Big Blue River at Carthage IN 39.743889 -85.575833 CATI3 Mill Creek near Cataract IN 39.433333 -86.763333 CCAI3 Cicero Creek at Arcadia IN 40.174444 -86.000556 CCHI3 Clifty Creek at Hartsville IN 39.273611 -85.702778 CCII3 Crooked Creek at Indianapolis IN 39.829722 -86.206111 CENI3 White River at Eagle Valley Power Plant IN 39.4861 -86.4183 CHLI3 Big Raccoon Creek at Cecil M. Harden Lake IN 39.717222 -87.072222 CLFI3 Ohio River at Clifty Creek IN 38.737 -85.418 CLNI3 Wabash River at Clinton IN 39.656389 -87.39611 CNNI3 Ohio River at Cannelton Lock and Dam IN 37.899 -86.707 CNTI3 White River near Centerton IN 39.4975 -86.4005 COXI3 Big Raccoon Creek at Coxville IN 39.6525 -87.293611 CRWI3 Sugar Creek at Crawfordsville IN 40.0489 -86.8995 CVGI3 Wabash River at Covington IN 40.14 -87.4067 DAVI3 Kankakee River at Davis Route 30 Bridge IN 41.4 -86.7011 DBRI3 Kankakee River at Dunns Bridge IN 41.221 -86.964 DCDI3 Deer Creek near Delphi IN 40.590278 -86.620833 DCRI3 St. Marys at Decatur IN 40.8486 -84.9378 DEPI3 Muscatatuck River at Deputy IN 38.804 -85.673 DLPI3 Tippecanoe River near Delphi IN 40.593889 -86.77 ECRI3 Eagle Creek at Eagle Creek Reservoir IN 39.822222 -86.303056 EDNI3 Sugar Creek (central) near Edniburgh IN 39.360556 -85.998611 EKMI3 St. Joseph River MI/IN at Elkhart IN 41.6917 -85.975 ELLI3 White River at Elliston IN 39.0278 -86.9669 EVVI3 Ohio River at Evansville IN 37.971 -87.578 FCFI3 Fall Creek near Fortville IN 39.954167 -85.868056 FINI3 Big Raccoon Creek near Fincastle IN 39.8125 -86.953889 FLCI3 Flatrock River at North Columbus IN 39.235 -85.926667 FRDI3 Blue River at Fredericksburg IN 38.434 -86.192 FREI3 White River at Edwardsport IN 38.807 -87.246 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 38.49 -87.5456 HDBI3 Salt Creek near Harrodsburg IN 39.004444 -86.508611 HUFI3 Wabash River at Terre Haute IN 39.4759 -87.4189 INDI3 White River at Raymond Street in Indianapolis IN 39.737222 -86.168889 INSI3 Eagle Creek at Speedway IN 39.775833 -86.250278 IUPI3 White River at Michigan Street in Indianapolis IN 39.774722 -86.189722 JRMI3 Wildcat Creek near Jerome IN 40.441389 -85.918889 KCKI3 Kokomo Creek near Kokomo IN 40.441111 -86.088889 KNXI3 Yellow River at Knox IN 41.3028 -86.6206 KTSI3 Kankakee River near Kouts IN 41.254 -87.034 LAFI3 Wabash River at Lafayette IN 40.422 -86.897 LBCI3 Little Buck Creek near Indianapolis IN 39.666667 -86.196667 LCII3 Lick Creek near Beech Grove IN 39.705833 -86.103611 LCMI3 Little Calumet River at Munster IN 41.569 -87.522 LGNI3 Wabash River at Logansport IN 40.7464 -86.3775 LYNI3 Wabash River at Linn Grove IN 40.65611 -85.03277 LYTI3 Wildcat Creek near Lafayette IN 40.440556 -86.829167 MANI3 Mill Creek at Cagle Mill IN 39.487778 -86.925 MCXI3 Tippecanoe River at Oakdale Dam IN 40.656667 -86.754444 MIEI3 White River at Muncie IN 40.2042 -85.3872 MLRI3 Fall Creek at Millersville IN 39.851944 -86.0875 MOHI3 Leary-Weber Ditch at Mohawk IN 39.8425 -85.825 MONI3 Salt Creek at Monroe Lake IN 39.006389 -86.513611 MOOI3 White Lick Creek at Mooresville IN 39.607778 -86.382222 MROI3 Mississinewa River at Marion IN 40.5761 -85.6594 MTVI3 Ohio River at Mount Vernon IN 37.928 -87.896 MTZI3 Wabash River at Montezuma IN 39.7925 -87.3739 NBGI3 Ohio River at Newburgh Lock and Dam IN 37.926 -87.375 NBLI3 White River at Noblesville IN 40.047 -86.0172 NEBI3 Brush Creek near Nebraska IN 39.070278 -85.486111 NHRI3 Wabash River at New Harmony IN 38.132 -87.94 NMSI3 Cicero Creek at Morse Reservoir IN 40.073019 -86.046675 NORI3 White River at 82nd Street Bridge near Nora IN 39.9106 -86.1055 NPLI3 Sugar Creek (central) at New Palestine IN 39.714167 -85.885556 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 -86.76 OKKI3 Wildcat Creek at Kokomo IN 40.470833 -86.153056 ORAI3 Tippecanoe River near Ora IN 41.1572 -86.5636 OWCI3 Wildcat Creek at Owasco IN 40.463889 -86.6375 PCBI3 Plum Creek at Groveland IN 39.761667 -86.729444 PCLI3 Prairie Creek near Lebanon IN 40.104444 -86.525556 PETI3 White River above Petersburg IN 38.528333 -87.253333 PNTI3 Patoka River at Princeton IN 38.39 -87.549 PRII3 Pleasant Run at Arlington Avenue in Indianapolis IN 39.775833 -86.063889 PRLI3 Patoka River at Patoka Lake IN 38.441666 -86.716944 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 39.816111 -86.753333 RGVI3 Mississinewa River near Ridgeville IN 40.28 -84.9925 RLVI3 Big Walnut Creek near Reelsville IN 39.536389 -86.976389 ROOI3 St. Joseph River OH/IN near St. Joe (Ft. Wayne) IN 41.1781 -85.0552 RRPI3 White River at Rocky Ripple IN 39.850833 -86.177222 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 39.529167 -85.781944 SCNI3 Stony Creek near Noblesville IN 40.028889 -85.995556 SERI3 East Fork White River near Seymour IN 38.9826 -85.8991 SFWI3 South Fork Wildcat Creek near Lafayette IN 40.417778 -86.768056 SHLI3 East Fork White River at Shoals IN 38.667 -86.7919 SLBI3 Kankakee River at Shelby IN 41.183 -87.343 SPEI3 Little Eagle Creek at Speedway IN 39.7875 -86.228056 SPNI3 White River at Spencer IN 39.2812 -86.7622 STPI3 Flatrock River at St. Paul IN 39.4175 -85.634167 STTI3 White River at Stout Power Plant IN 39.714444 -86.200556 TELI3 Ohio River at Tell City IN 37.953 -86.775 UNWK2 Ohio River at J.T. Meyers Lock and Dam IN 37.792 -87.965 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 38.976111 -85.620278 WABI3 Wabash River at Wabash IN 40.7902 -85.8202 WHLI3 Muscatatuck River at Wheeler Hollow IN 38.768056 -86.152222 WLLI3 East Fork White River at Williams IN 38.8022 -86.6456 WNMI3 Tippecanoe River at Winamac IN 41.0572 -86.5931 ZONI3 Eagle Creek at Zionsville IN 39.946389 -86.260278 ABIK1 Smoky Hill River near Abilene KS 38.906 -97.286 ADAK1 Salt Creek (ADAK1) near Ada KS 39.142 -97.836 AERK1 Walnut Creek near Alexander KS 38.465 -99.622 AGAK1 Walnut River at Augusta KS 37.6706 -96.95 AGSK1 Whitewater River at Augusta KS 37.68 -96.9961 ALBK1 Walnut Creek at Albert KS 38.461 -99.014 ALEK1 Mud Creek at Abilene KS 38.93 -97.228 ALMK1 Little Arkansas River at Alta Mills KS 38.112 -97.592 AMCK1 Neosho River near Americus KS 38.467 -96.25 ARCK1 Arkansas River at Arkansas City KS 37.0563 -97.0589 ARKK1 Walnut River at Arkansas City KS 37.0583 -97.01 ARNK1 Smoky Hill River near Arnold KS 38.809 -100.02 ATCK1 Missouri River at Atchison KS 39.56 -95.114 ATOK1 Verdigris River at Altoona KS 37.49 -95.68 BARK1 Little Blue River near Barnes KS 39.776 -96.858 BBCK1 Bluff Creek near Protection KS 37.03 -99.4694 BETK1 Buckner Creek near Burdett KS 38.163 -99.642 BLPK1 Ninnescah River near Belle Plaine KS 37.374 -97.339 BLRK1 Big Blue River at Blue Rapids KS 39.689 -96.668 BLTK1 Solomon River at Beloit KS 39.453 -98.114 BRLK1 Neosho River at Burlington KS 38.194 -95.736 BRNK1 Salt Creek at Barnard KS 39.19 -98.151 BTTK1 Pawnee River near Burdett KS 38.207 -99.643 BUNK1 Smoky Hill River near Bunker Hill KS 38.793 -98.781 BURK1 White Rock Creek near Burr Oak KS 39.899 -98.251 BVUK1 Kansas River near Belvue KS 39.188 -96.147 CBNK1 Chikaskia River near Corbin KS 37.129 -97.601 CDBK1 Beaver Creek at Cedar Bluffs KS 39.9863 -100.56 CFVK1 Verdigris River at Coffeyville KS 37.061 -95.636 CHPK1 Chapman Creek near Chapman KS 39.031 -97.04 CLDK1 Elk creek at Clyde KS 39.591 -97.391 CNKK1 Republican River at Concordia KS 39.59 -97.659 CNUK1 Neosho River near Chanute KS 37.73 -95.441 COOK1 Arkansas River at Coolidge KS 38.028 -102.011 COWK1 Cowskin Creek at Wichita 119th St KS 37.7014 -97.4802 CTWK1 Cottonwood River at Cottonwood Falls KS 38.365 -96.546 CYCK1 Republican River at Clay Center KS 39.392 -97.125 DDCK1 Arkansas River at Dodge City KS 37.745 -100.032 DELK1 Soldier Creek near Delia KS 39.2383 -95.888 DMRK1 S F Solomon River near Damar KS 39.374 -99.582 DRBK1 Arkansas River at Derby KS 37.5427 -97.2753 DSOK1 Kansas River at De Soto KS 38.983 -94.964 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 38.937 -99.564 ELWK1 Smoky Hill River at Ellsworth KS 38.73 -98.224 EMPK1 Cottonwood River at Emporia KS 38.382 -96.181 ENTK1 Smoky Hill River at Enterprise KS 38.907 -97.12 ENWK1 Crooked Creek near Englewood KS 37.032 -100.208 EPRK1 Neosho River at Emporia KS 38.431 -96.209 EREK1 Neosho River near Erie KS 37.549 -95.263 ESTK1 Stranger Creek at Easton KS 39.362 -95.108 FKFK1 Black Vermillion River at Frankfort KS 39.684 -96.438 FLRK1 Cottonwood River near Florence KS 38.236 -96.877 FRGO2 Cimarron River near Forgan KS 37.011 -100.491 FRNK1 Fall River at Fredonia KS 37.519 -95.825 FSKK1 Marmaton River at Fort Scott KS 37.863 -94.677 FTNK1 Little Osage River at Fulton KS 38.019 -94.713 FTRK1 Kansas River at Ft. Riley KS 39.053 -96.776 GCKK1 Arkansas River at Garden City KS 37.956 -100.877 GDEK1 N F Solomon River at Glade KS 39.678 -99.308 GLAK1 Solomon River near Glasco KS 39.374 -97.836 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 38.353 -98.764 GYSK1 Gypsum Creek near Gypsum KS 38.653 -97.419 HAVK1 Arkansas River near Haven KS 37.946 -97.775 HBGK1 Little Blue River near Hollenberg KS 39.98 -97.004 HCHK1 Arkansas River at Hutchinson KS 38.039 -97.933 HTDK1 Little Arkansas River near Halstead KS 38.029 -97.54 HYSK1 Big Creek near Hays KS 38.852 -99.318 IDPK1 Verdigris River at Independence KS 37.223 -95.677 IOLK1 Neosho River at Iola KS 37.891 -95.431 JMSK1 Buffalo Creek at Jamestown KS 39.617 -97.856 JUCK1 Smoky Hill River near Junction City KS 38.98 -96.858 KCKK1 Kansas River at "23rd Street, Kansas City, KS" KS 39.09 -94.609 KIOK1 Medicine Lodge River near Kiowa KS 37.038 -98.468 KNSK1 Arkansas River at Kinsley KS 37.926 -99.375 KRWK1 N F Solomon River at Kirwin Reservoir KS 39.6636 -99.1247 LAWK1 Wakarusa River near Lawrence KS 38.911111 -95.260278 LCGK1 Marais Des Cygnes River at La Cygne KS 38.345 -94.772 LCPK1 Kansas River at Lecompton KS 39.052 -95.388 LDLK1 Beaver Creek at Ludell KS 39.8486 -100.9583 LEVK1 Missouri River at Leavenworth KS 39.327 -94.909 LINK1 Saline River at Lincoln KS 39.029 -98.124 LISK1 Rock Creek at Louisville KS 39.2492 -96.315 LNDK1 Salt Creek (LNDK1) at Lyndon KS 38.609 -95.638 LNEK1 Pottawatomie Creek at Lane KS 38.444 -95.084 LNRK1 Solomon River at Lenora KS 39.6152 -100.0016 LNSK1 Smoky Hill River at Lindsborg KS 38.566 -97.673 LOUK1 Vermillion Creek near Louisville KS 39.291 -96.231 LOVK1 White Rock Creek at Lovewell Reservoir KS KS 39.8844 -98.028 LRYK1 Neosho River at Le Roy KS 38.08 -95.636 LWRK1 Kansas River at Lawrence KS 38.974 -95.235 LYNK1 Cow Creek at Lyons KS 38.308 -98.192 MACK1 Rattlesnake Creek near Macksville KS 37.872 -98.875 MDKK1 Ninnescah River near Murdock KS 37.564 -97.853 MHKK1 Kansas River at Manhattan KS 39.181 -96.553 MPSK1 Solomon River at Minneapolis KS 39.122 -97.711 MRYK1 Big Blue River at Marysville KS 39.842 -96.661 MSCK1 Delaware River near Muscotah KS 39.521 -95.533 MTRK1 Smoky Hill River near Mentor KS 38.711 -97.571 MULK1 Arkansas River near Mulvane KS 37.476 -97.261 NCMK1 Smoky Hill River near New Cambria KS 38.864 -97.483 NCRK1 Sappa Creek near Norcatur KS 40.0013 -99.9916 NEOK1 Neosho River at Neosho Rapids KS 38.368 -95.995 NLSK1 Solomon River at Niles KS 38.969 -97.476 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 38.941 -94.671 OSBK1 S F Solomon River near Osborne KS 39.45 -98.7 OSMK1 Marais Des Cygnes River at Osawatomie KS 38.504 -94.96 OSWK1 Neosho River at Oswego KS 37.177 -95.105 OTWK1 Marais Des Cygnes River at Ottawa KS 38.618 -95.268 OXFK1 Arkansas River at Oxford KS 37.278 -97.162 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 38.397 -96.356 PPFK1 Neosho River near Parsons KS 37.34 -95.109 PTIK1 N F Solomon River at Portis KS 39.554 -98.692 PXCK1 Mill Creek (PXCK1) at Paxico KS 39.063 -96.15 QNMK1 Marais Des Cygnes River near Quenemo KS 38.547 -95.527 RCNK1 Walnut Creek at Nekoma KS 38.477 -99.437 RDNK1 Marais Des Cygnes River near Reading KS 38.567 -95.964 RDPK1 Fancy Creek at Randolph KS 39.472 -96.832 RSSK1 Cross Creek at Rossville KS 39.135 -95.959 RUSK1 Saline River near Russell KS 38.966 -98.853 SANK1 Pawnee River near Sanford KS 38.189 -99.331 SCNK1 Smoky Hill River above Schoenchen KS 38.711 -99.381 SCSK1 Smoky Hill River below Schoenchen KS 38.7128 -99.2925 SEDK1 Little Arkansas River near Sedgwick KS 37.883 -97.424 SIPK1 Pottawatomie Creek near Scipio KS 38.3492 -95.203 SKTK1 Bow Creek near Stockton KS 39.563 -99.284 SLNK1 Mulberry Creek near Salina KS 38.844 -97.668 SNCK1 Turkey Creek near Seneca KS 39.948 -96.108 SNDK1 Republican River at Scandia KS 39.797 -97.794 STAK1 Blue River near Stanley KS 38.813 -94.675 STCK1 S F Solomon River near Webster KS 39.3941 -99.4258 SYRK1 Arkansas River at Syracuse KS 37.966 -101.756 TNGK1 Stranger Creek near Tonganoxie KS 39.116 -95.011 TNRK1 Kansas River at Turner Bridge KS 39.093 -94.71 TOPK1 Soldier Creek near Topeka KS 39.1 -95.724 TOWK1 Whitewater River near Towanda KS 37.796 -97.013 TPAK1 Kansas River at Topeka KS 39.067 -95.616 TPOK1 Marais Des Cygnes River near Trading Post KS 38.222 -94.668 TSCK1 Saline River at Tescott KS 39.004 -97.874 TSHK1 Shunganunga Creek at Topeka KS 39.03 -95.685 TURK1 Turkey Creek at Southwest Boulevard KS 39.059 -94.626 WAAK1 Saline River near Wakeeney KS 39.108 -99.869 WDBK1 Lyon Creek near Woodbine KS 38.885 -96.91 WDRK1 Prairie Dog Creek near Woodruff KS 39.986 -99.478 WFDK1 Walnut River at Winfield KS 37.2242 -96.9944 WMGK1 Kansas River at Wamego KS 39.198 -96.304 WODK1 S F Solomon River near Woodston KS 39.44 -99.101 WSHK1 Mill Creek (WSHK1) at Washington KS 39.814 -97.039 ZENK1 Rattlesnake Creek near Zenith KS 38.094 -98.546 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 38.422 -83.999 BOOK2 South Fork at Booneville KY 37.48 -83.6753 BRNK2 Green River at Brownsville KY 37.206 -86.262 BRRK2 Barren River at Barren River Lake KY 36.895 -86.133888 BSNK2 Rolling Fork near Boston KY 37.767 -85.704 BWGK2 Barren River at Bowling Green KY 36.998 -86.428 BXTK2 Cumberland River at Baxter KY 36.8606 -83.3269 CALK2 Green River at Calhoun Lock and Dam KY 37.534 -87.264 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 38.377 -84.303 DIXK2 Dix River at Lake Herrington KY 37.8 -84.716666 DUNK2 Rough River at Dundee KY 37.55 -86.717 ELKK2 Big Sandy River at Elkhorn City KY 37.3039 -82.343 FFTK2 Kentucky River at Frankfort Lock KY 38.233 -84.867 FLMK2 Licking River (KY) at Falmouth KY 38.68 -84.32 FLRK2 Big Sandy River at Fullers Station KY 38.1722 -82.6389 FODK2 Kentucky River at Ford Lock KY 37.895 -84.262 GNUK2 Ohio River at Lloyd Greenup Lock KY 38.6467 -82.8606 GRLK2 Green River at Green River Lake KY 37.240277 -85.347222 GYNK2 Little Sandy River at Grayson KY 38.3333 -82.9333 HAZK2 North Fork at Hazard KY 37.247 -83.182 HIBK2 Kentucky River at High Bridge Lock KY 37.829 -84.724 HLDK2 Kentucky River at Heidelberg KY 37.55 -83.767 JKNK2 North Fork at Jackson KY 37.5456 -83.37 MFVK2 Green River at Munfordville KY 37.268 -85.886 MKBK2 Licking River (KY) at McKinneysburg KY 38.6 -84.2697 MKLK2 Ohio River at Markland Tailwater KY 38.7667 -84.9667 MLPK2 Ohio River at McAlpine Lock and Dam KY 38.278 -85.794 MLUK2 Ohio River at McAlpine Upper KY 38.283 -85.8 MRHK2 Triplett Creek at Licking River in Morehead KY 38.1844 -83.43 MYSK2 Ohio River at Maysville KY 38.6347 -83.7031 NOLK2 Nolin River at Nolin River Lake KY 37.279166 -86.249166 ODAK2 South Fork at Oneida KY 37.2683 -83.6514 OWBK2 Ohio River at Owensboro KY 37.8 -87.067 PAHK2 Ohio River at Paducah KY 37.089 -88.594 PKYK2 Big Sandy River at Pikeville KY 37.4642 -82.5264 PRDK2 Green River at Paradise KY 37.265 -86.979 PRSK2 Stoner Creek at Paris KY 38.205 -84.239 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 37.216 -86.894 RRLK2 Rough River at Rough River Lake KY 37.617777 -86.504444 SAYK2 Licking River near Salyersville KY 37.7305 -83.058 SHPK2 Salt River at Shepherdsville KY 38.054 -85.625 TVLK2 Salt River at Taylorsville Lake KY 38.01444 -85.37138 WDBK2 Green River at Woodbury KY 37.184 -86.635 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 32.374 -91.881 AMIL1 Tangipahoa River near Amite LA 30.729 -90.484 BLRL1 Atchafalaya River above Butte LaRose LA 30.281 -91.687 BNTL1 Cypress Bayou Lake near Benton LA 32.6519 -93.6697 BSHL1 Bogue Chitto River near Bush LA 30.629 -89.897 BSLL1 Bayou Nezpique at Basile LA 30.4806 -92.6319 BSRL1 Atchafalaya River at Bayou Sorrel Lock LA 30.13 -91.323 BTRL1 Mississippi River at Baton Rouge LA 30.429 -91.207 BXAL1 Pearl River near Bogalusa LA 30.798 -89.821 BYML1 Amite River at Bayou Manchac LA 30.347 -90.895 CGSL1 Bogue Falaya River near Camp Covington LA 30.557 -90.146 CLRL1 Bogue Falaya River at Lee Road LA 30.499 -90.084 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 30.494 -90.169 CVEL1 Bogue Falaya River at Boston Street LA 30.476 -90.089 DARL1 Amite River near Darlington LA 30.889 -90.844 DENL1 Amite River at Denham Springs LA 30.464 -90.99 DONL1 Mississippi River at Donaldsonville LA 30.103 -90.959 FLSL1 Tchefuncte River near Folsom LA 30.616 -90.249 FRNL1 Bogue Chitto River at Franklinton LA 30.843 -90.162 GLML1 Calcasieu River near Glenmora LA 30.9958 -92.6736 GNDL1 Atchafalaya River at Myette Point/Grand Lake LA 29.893 -91.446 GREL1 Red River at Grand Ecore LA 31.8183 -93.0842 HOLL1 Tickfaw River at Holden LA 30.504 -90.677 KDRL1 Calcasieu River near Kinder LA 30.5025 -92.9154 KENL1 Tangipahoa River near Kentwood LA 30.938 -90.49 KRZL1 Atchafalaya River at Krotz Springs LA 30.535 -91.747 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 32.705 -93.9608 LCRL1 Calcasieu River at Sam Houston Jones State Park LA 30.2894 -93.2708 LPOL1 Tickfaw River at Liverpool LA 30.931 -90.673 LPTL1 Sabine River at Logansport LA 31.9722 -94.0061 MCGL1 Atchafalaya River at Morgan City LA 29.694 -91.211 MLUL1 Ouachita River at Monroe LA 32.5053 -92.1256 MLVL1 Atchafalaya River at Melville LA 30.691 -91.736 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 29.935 -90.136 OBCL1 Calcasieu River near Oberlin LA 30.6403 -92.8139 OKDL1 Calcasieu River near Oakdale LA 30.822 -92.685 OLVL1 Comite River near Olive Branch LA 30.756 -91.044 OTBL1 Calcasieu River near Old Town Bay LA 30.2922 -93.1422 PERL1 Pearl River near Pearl River LA 30.385 -89.737 PVLL1 Amite River at Port Vincent LA 30.333 -90.852 RHLL1 Little River near Rochelle LA 31.7542 -92.3444 ROBL1 Tangipahoa River at Robert LA 30.506 -90.362 RPIL1 Bayou Anacoco near Rosepine LA 30.9528 -93.3528 RRLL1 Mississippi River at Red River Landing LA 30.961 -91.664 RRVL1 Mississippi River at Reserve LA 30.083 -90.583 SLGL1 Red Chute Bayou at Sligo LA 32.4472 -93.5944 SMML1 Atchafalaya River at Simmesport LA 30.983 -91.798 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 42.355 -71.05 BZBM3 Buzzards Bay at Woods Hole MA 41.5178 -70.6675 CTVM3 Housatonic River at E Br at Coltsville MA 42.47 -73.18 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 42.17 -72.5197 LCNM3 Concord River at Lowell MA 42.646 -71.299 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 42.65 -72.62 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 42.3 -72.6167 NORM3 Wading River at Norton MA 41.9475 -71.1772 NRWM3 Neponset River at Norwood MA 42.14 -71.12 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 42.7 -73.1594 WLMM3 Shawsheen River at Wilmington MA 42.568 -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 -78.788 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 39.58 -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 47.070556 -69.080833 AUBM1 Androscoggin River at Auburn ME 44.07 -70.22 AUGM1 Kennebec River at Augusta ME 44.3186 -69.7717 BBRM1 Big Black River near Depot Mountain ME 46.893889 -69.752222 BLAM1 Piscataquis River at Blanchard ME 45.267222 -69.583611 BNGM1 Kennebec River at Bingham ME 45.07 -69.907 DICM1 St. John River at Dickey ME 47.112222 -69.090278 DOVM1 Piscataquis River at Dover-Foxcroft ME 45.1752 -69.3153 EDDM1 Penobscot River at Eddington ME 44.825 -68.697 FIHM1 Fish River at Fort Kent ME 47.237222 -68.59 FTKM1 St. John River at Fort Kent ME 47.259722 -68.6 GRNM1 East Branch of the Penobscot River at Grindstone ME 45.7303 -68.5894 MASM1 Aroostook River at Masardis ME 46.5225 -68.373056 MATM1 Mattawamkeag River at Mattawamkeag ME 45.5 -68.3 MERM1 Sandy River at Mercer ME 44.7081 -69.9375 NANM1 Carrabassett River at North Anson ME 44.8692 -69.955 NINM1 St. John River at Nine Mile Bridge ME 46.7 -69.7164 PITM1 Sebasticook River at Pittsfield ME 44.7167 -69.4139 RMFM1 Androscoggin River at Rumford ME 44.55 -70.55 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 45.23 -68.65 WSHM1 Aroostook River at Washburn ME 46.77 -68.17 ADAM4 Grand River at Ada MI 42.9553 -85.4764 ADRM4 River Raisin near Adrian MI 41.904 -83.981 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 46.726 -88.662 ANNM4 Huron River at Ann Arbor MI 42.286 -83.733 AUTM4 Au Train River near Au Train MI 46.4125 -86.841666 BCRM4 Battle Creek River at Battle Creek MI 42.332 -85.1542 BESM4 Black River at Bessemer MI 46.511 -90.074 BEVM4 South Branch Tobacco River near Beaverton MI 43.867 -84.546 BLIM4 River Raisin at Blissfield MI 41.833 -83.867 BOLM4 Thunder Bay River near Bolton MI 45.124 -83.6355 BTCM4 Kalamazoo River at Battle Creek MI 42.3239 -85.1975 BURM4 St. Joseph River MI/IN at Burlington MI 42.1031 -85.08 BVTM4 Tobacco River at Beaverton MI 43.879 -84.475 CHPM4 Peshekee River near Champion MI 46.557 -88.003 CHSM4 Shiawassee River at Chesaning MI 43.184 -84.12 CLDM4 Thornapple River at Caledonia MI 42.8111 -85.4833 CLLM4 Sturgeon River - Houghton Co near Chassell MI 46.977222 -88.509722 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 45.909 -87.214 CROM4 Muskegon River near Croton Dam MI 43.4347 -85.6653 CRYM4 Paint River near Crystal Falls MI 46.096 -88.371 CSSM4 Cass River near Cass City MI 43.586 -83.181 CYFM4 Michigamme River at Inflow to Michigamme Reservoir MI 46.159 -88.242 DAVM4 Kearsley Creek near Davison MI 43.034 -83.581 DETM4 Rouge River at Detroit MI 42.372 -83.256 DEXM4 Mill Creek near Dexter MI 42.2893 -83.8896 DMDM4 Grand River at Dimondale MI 42.645 -84.6503 DNDM4 River Raisin at Dundee MI 41.955 -83.648 EAGM4 Looking Glass River near Eagle MI 42.8281 -84.7594 EJJM4 Jordan River at East Jordan MI 45.1025 -85.098 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 42.988 -83.733 FLTM4 Flint River at Flint MI 43.038 -83.769 FOSM4 Flint River at Fosters MI 43.308 -83.953 FRDM4 Ford River near Hyde MI 45.756 -87.201 FRGM4 Shiawassee River near Fergus MI 43.255 -84.106 FRNM4 Cass River at Frankenmuth MI 43.342 -83.744 FSRM4 Clinton River near Clinton Township MI 42.577 -82.951 FTCM4 Thread Creek near Flint MI 42.975 -83.636 GACM4 Middle Rouge near Garden City MI 42.349 -83.313 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 46.278 -87.436 HHTM4 Sycamore Creek at Holt MI 42.6403 -84.4828 HMGM4 Huron River at Hamburg MI 42.465 -83.8 HONM4 Platte River at Honor MI 44.668 -86.035 HOXM4 Pine River Nrn Lower at Hoxeyville MI 44.193 -85.77 HRVM4 Chocolay River near Harvey MI 46.489 -87.329 HSTM4 Thornapple River at Hastings MI 42.6159 -85.2364 HUMM4 Escanaba River at Humboldt MI 46.499 -87.886 INKM4 Lower Rouge at Inkster MI 42.3 -83.3 IONM4 Grand River at Ionia MI 42.972 -85.0692 JACM4 Grand River at Jackson MI 42.2836 -84.4088 KOSM4 Menominee River at Koss MI 45.39 -87.7 LNSM4 Grand River at Lansing MI 42.7506 -84.5553 LUZM4 South Branch Ausable River at Luzerne MI 44.615 -84.456 LWLM4 Grand River at Lowell MI 42.925 -85.3428 MARM4 Kalamazoo River at Marshall MI 42.2648 -84.9639 MCHM4 River Raisin near Manchester MI 42.168 -84.0761 MCLM4 N. Br. Clinton River near Mount Clemens MI 42.629 -82.89 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 44.66 -84.131 MONM4 River Raisin at Monroe City MI 41.914 -83.388 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 43.564 -84.37 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 44.363 -85.821 MSQM4 Manistique River at Manistique MI 46.030555 -86.161111 MTCM4 Clinton River at Mount Clemens MI 42.596 -82.91 MYFM4 Boardman River near Mayfield MI 44.658 -85.433 NBRM4 Salt River near North Bradley MI 43.706111 -84.471944 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 45.943 -86.706 OTSM4 Flint River near Otisville MI 43.111111 -83.519444 OWOM4 Shiawassee River at Owosso MI 43.015 -84.181 PAUM4 Ontonagon River at Paulding MI 46.357 -89.073 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 43.04 -86.0811 RCLM4 Ontonagon River at Rockland MI 46.699 -89.16 RCMM4 Kalamazoo River near New Richmond MI 42.6447 -86.1161 RDOM4 Ausable River at Red Oak MI 44.677 -84.293 RIVM4 Paw Paw River at Riverside MI 42.1861 -86.3684 RKLM4 Ontonagon River at Rockland MI 46.721 -89.207 ROCM4 Rogue River at Rockford MI 43.0822 -85.5909 RUDM4 Pine River near Rudyard MI 46.183 -84.6 SAGM4 Saginaw River at Saginaw MI 43.413 -83.956 SALM4 Saline River near Saline MI 42.169 -83.787 SCTM4 Pere Marquette River near Scottville MI 43.945 -86.2787 SFRM4 Rouge River at Southfield MI 42.4477 -83.2977 SHRM4 Manistee River near Sherman MI 44.436 -85.699 SMYM4 Flat River at Smyrna MI 43.0528 -85.2647 SNWM4 Sturgeon River at Sidnaw MI 46.584 -88.593 STRM4 Rifle River near Sterling MI 44.06 -84.01 SVRM4 Pigeon River at Vanderbilt MI 45.1567 -84.4667 SZCM4 Schweitzer Creek near Palmer MI 46.411 -87.624 TAPM4 Tahquamenon River at Paradise MI 46.575 -85.269 TECM4 River Raisin near Tecumseh MI 42.003 -83.934 TRRM4 Trap Rock River near Lake Linden MI 47.229 -88.385 TRVM4 St. Joseph River MI/IN at Three Rivers MI 41.9403 -85.6328 URDM4 Upper Rouge at Detroit MI 42.394167 -83.278333 VCKM4 Portage River at Vicksburg MI 42.1147 -85.4856 VGCM4 Clam River at Vogel Center MI 44.2 -85.053 VSSM4 Cass River at Vassar MI 43.365 -83.583 WAHM4 Cass River at Wahjamega MI 43.450556 -83.441389 WHTM4 White River above Whitehall MI 43.4642 -86.2326 WLKM4 Michigamme River at Witch Lake MI 46.247 -88.013 WLSM4 Manistee River near Wellston (Tippy Dam) MI 44.258 -85.94 WMSM4 Red Cedar River at Williamston MI 42.6831 -84.2191 WOLM4 Sturgeon River at Wolverine MI 45.275 -84.6 ADSM5 Wild Rice River (MN) near Ada MN 47.2655 -96.5008 AKAM5 Mississippi River at Anoka MN 45.183 -93.383 ALVM5 Snake River at Alvarado MN 48.195 -97.022 ASTM5 Cedar River at Austin MN 43.654 -92.955 ATKM5 Mississippi River near Aitkin MN 46.5411 -93.7075 BENM5 Chippewa River MN at Benson MN 44.3111 -95.625 BLTM5 Sandhill River at Beltrami MN 47.535 -96.531 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 -94.675 CRKM5 Red Lake River at Crookston MN 47.776 -96.61 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 45.042 -93.79 DILM5 Buffalo River near Dilworth MN 46.963 -96.662 DOBM5 Dobbins Creek near Austin MN 43.688 -92.91 EGFM5 Red River of the North at East Grand Forks MN 47.927 -97.028 FOXM5 Ottertail River near Foxhome MN 46.2136 -96.3069 FTRM5 Mississippi River at Fort Ripley MN 46.181 -94.366 GENW3 Mississippi River at Genoa MN 43.572 -91.229 GLNM5 Buffalo Creek below Glencoe MN 44.7639 -94.0908 GTEM5 Minnesota River at Granite Falls MN 44.8 -95.533 HENM5 Minnesota River at Henderson MN 44.517 -93.883 HIGM5 Red Lake River at High Landing MN 48.049 -95.809 HILN8 Red River of the North at Halstad MN 47.353 -96.845 HLLM5 Two Rivers River at Hallock MN 48.776 -96.938 HNDM5 Wild Rice River (MN) at Hendrum MN 47.267 -96.797 HOUM5 Root River at Houston MN 43.769 -91.57 HRDM5 Rock River near Hardwick MN 43.7178 -96.1642 HSTM5 Mississippi River at Hastings MN 44.767 -92.867 HWYM5 Buffalo River at Hawley MN 46.852 -96.329 JCKM5 Des Moines River at Jackson MN 43.619 -94.986 JDNM5 Minnesota River at Jordan MN 44.65 -93.617 LANM5 Cedar River at Lansing MN 43.738 -92.955 LCRM5 Mississippi River at La Crescent MN 43.87 -91.305 LGPM5 Long Prairie River at Long Prairie MN 45.975 -94.866 LKBM5 Two Rivers River at Lake Bronson MN 48.73 -96.6638 LKCM5 Mississippi River at Lake City MN 44.467 -92.264 LMBM5 Cottonwood River near Lamberton MN 44.2386 -95.245 LNSM5 Root River at Lanesboro MN 43.722 -91.979 LUVM5 Rock River at Luverne MN 43.6542 -96.2008 LYNW3 Mississippi River at Lynxville MN 43.207 -91.087 MMLM5 Redwood River at Marshall MN 44.469 -95.789 MNKM5 Minnesota River at Mankato MN 44.15 -94.017 MSCM5 Mississippi River at Minnesota City MN 44.157 -91.807 MSPM5 Mississippi River at Minneapolis MN 45.05 -93.267 MVOM5 Minnesota River at Montevideo MN 44.933 -95.75 NULM5 Minnesota River at New Ulm MN 44.317 -94.425 NWUM5 Cottonwood River at New Ulm MN 44.275 -94.44 OSLM5 Red River of the North at Oslo MN 48.194 -97.141 OTRM5 Ottertail River near Foxhome MN 46.2113 -96.3069 PILM5 North Branch Middle Fork Zumbro River at Pine Island MN 44.1833 -92.65 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 44.008 -92.446 RCCM5 Cascade Creek at Rochester MN 44.03 -92.472 RCHM5 Zumbro River at Rochester MN 44.062 -92.466 RCSM5 Zumbro River at Rochester Beltline MN 44.007 -92.473 RDWM5 Mississippi River at Red Wing Lock & Dam #3 MN 44.6089 -92.61 REDM5 Mississippi River at Red Wing MN 44.567 -92.517 RKFM5 Crow River at Rockford MN 45.083 -93.733 RLFM5 Red Lake River near Red Lake Falls MN 47.8969 -96.2755 ROCM5 Silver Creek near Rochester MN 44.029 -92.421 ROSM5 Roseau River at Roseau MN 48.846 -95.76 RUSM5 Redwood River at Russell MN 44.3194 -95.9547 RWDM5 Redwood River at Redwood Falls MN 44.517 -95.167 SABM5 South Buffalo River at Sabin MN 46.776 -96.627 SAVM5 Minnesota River at Savage MN 44.783 -93.333 SCNM5 St. Louis River at Scanlon MN 46.7033 -92.4186 SCOM5 Mississippi River at St. Cloud MN 45.547 -94.146 SHYM5 Marsh River at Shelly MN 47.412 -96.763 SKPM5 Minnesota River at Shakopee MN 44.8 -93.533 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 45.56 -94.23 STLM5 St. Croix River at Stillwater MN 45.033 -92.783 STPM5 Mississippi River at St. Paul MN 44.95 -93.083 TACM5 Prairie River above Taconite MN 47.3889 -93.3806 TRCM5 Turtle Creek near Austin MN 43.65 -93.034 TREW3 Mississippi River at Trempealeau MN 43.989 -91.433 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 47.266 -96.248 WABM5 Mississippi River at Wabasha MN 44.387 -92.054 WARM5 Snake River at Warren MN 48.195 -96.779 WDOM5 Des Moines River at Windom MN 43.874 -95.119 WGOM5 North Fork Zumbro River near Wanamingo MN 44.3136 -92.8103 WIDM5 Mississippi River at Winona Dam 5a MN 44.093 -91.68 WNAM5 Mississippi River at Winona MN 44.04 -91.6 WSDM5 West Branch Lac Qui Parle River near Madison MN 44.9358 -96.1925 WSPM5 Middle Fork Whitewater River near Whitewater State Park MN 44.05 -92.05 ZUMM5 Zumbro River at Zumbro Falls MN 44.287 -92.424 AGYM7 Platte River near Agency MO 39.689 -94.704 ANNM7 Black River near Annapolis MO 37.336 -90.789 ARNM7 Meramec River near Arnold MO 38.457 -90.361 BLRM7 Big Creek near Blairstown MO 38.555 -93.966 BLVM7 Blackwater River near Blue Lick MO 38.992 -93.197 BONM7 Petite Saline Creek near Boonville MO 38.917 -92.704 BOZM7 Missouri River at Boonville MO 38.978 -92.754 BRLM7 Nodaway River near Burlington Junction MO 40.445 -95.088 BRNM7 Grand River near Brunswick MO 39.431 -93.16 BYRM7 Big River at Byrnesville MO 38.382 -90.63 CAGM7 Mississippi River at Winfield Lock MO 39.001 -90.687 CANM7 Mississippi River at Canton MO 40.142 -91.519 CAXM7 Wakenda Creek at Carrollton MO 39.347 -93.496 CHSI2 Mississippi River at Chester MO 37.909 -89.82 CHTM7 Spring River at Carthage MO 37.186 -94.316 CHZM7 Grand River near Chillicothe MO 39.754 -93.556 CLKM7 Mississippi River at Clarksville MO 39.373 -90.905 CMSM7 Missouri River near Chamois MO 38.6828 -91.7622 CMZM7 Sac River near Caplinger Mills MO 37.87 -93.803 CPGM7 Mississippi River at Cape Girardeau MO 37.302 -89.518 CRTM7 Mississippi River at Caruthersville MO 36.19 -89.65 DNZM7 Current River at Doniphan MO 36.622 -90.847 EADM7 Mississippi River at St. Louis MO 38.629 -90.18 EMCM7 Jacks Fork at Eminence MO 37.155 -91.359 ERKM7 Meramec River near Eureka MO 38.516 -90.592 EWNM7 North Fabius River near Ewing 5E MO 40.0189 -91.6219 FFXM7 Tarkio River near Fairfax MO 40.339 -95.407 FSKM7 St. Francis River at Fisk MO 36.78 -90.201 FYTM7 Moniteau Creek near Fayette MO 39.121 -92.561 GAZM7 Grand River near Gallatin MO 39.927 -93.942 GGYM7 Mississippi River at Gregory Landing MO 40.279 -91.496 GLNM7 James River at Galena MO 36.805 -93.478 GLZM7 Missouri River at Glasgow MO 39.222 -92.849 GSCM7 Missouri River at Gasconade MO 38.675 -91.556 HNNM7 Mississippi River at Hannibal MO 39.723 -91.374 HRNM7 Missouri River at Hermann MO 38.71 -91.439 HTNM7 Little Osage River at Horton MO 37.994 -94.369 HZLM7 Gasconade River near Hazelgreen MO 37.76 -92.452 JCMM7 Moreau River near Jefferson City MO 38.529 -92.192 JFFM7 Missouri River at Jefferson City MO 38.587 -92.18 JOPM7 Shoal Creek near Joplin MO 37.023 -94.516 JRMM7 Gasconade River at Jerome MO 37.93 -91.977 KAYM7 Blue River at 63rd Street MO 39.014 -94.526 KBNM7 Little Blue River at Knobtown MO 38.964 -94.427 KBPM7 Blue River at Blue Parkway MO 39.034 -94.527 KCCM7 Blue River at "Bannister Road, Kansas City" MO 38.957 -94.559 KCDM7 Missouri River at Kansas City MO 39.112 -94.588 KCTM7 Blue River at 12th Street MO 39.097 -94.491 KNYM7 Blue River at 71 Highway MO 38.973 -94.545 KSDM7 Blue River at Stadium Drive MO 39.059 -94.513 KSVM7 Blue River at 17th Street MO 39.09 -94.494 KSYM7 Blue River at 40 Highway MO 39.07 -94.507 KWPM7 Brush Creek at "Ward Parkway, Kansas City" MO 39.033 -94.607 LKCM7 Little Blue River near Lake City MO 39.101 -94.3 LUSM7 Mississippi River at Louisiana MO 39.453 -91.047 MBYM7 Fishing River near Mosby MO 39.319 -94.313 MIAM7 Missouri River at Miami MO 39.328 -93.225 MYVM7 102 River at Maryville MO 40.345 -94.832 NAPM7 Missouri River at Napoleon MO 39.133 -94.064 NLDM7 Salt River at New London MO 39.612 -91.408 NMDM7 Mississippi River at New Madrid MO 36.584 -89.525 NVDM7 Marmaton River near Nevada MO 37.92 -94.36 NVZM7 Chariton River near Novinger MO 40.235 -92.687 OMNM7 Cuivre River at Old Monroe MO 38.929 -90.746 OTTM7 Lamine River near Otterville MO 38.703 -92.978 PALM7 North River at Palmyra MO 39.818 -91.52 PATM7 Grand River near Pattonsburg MO 40.025 -94.127 PAZM7 St. Francis River at Patterson MO 37.194 -90.503 PCFM7 Meramec River near Pacific MO 38.437 -90.795 PLCM7 Platte River near Platte City MO 39.369 -94.787 PPBM7 Black River at Poplar Bluff MO 36.758 -90.407 PRIM7 Chariton River near Prairie Hill MO 39.54 -92.79 RICM7 Crooked Creek near Richmond MO 39.333 -93.98 RIFM7 Gasconade River near Rich Fountain MO 38.389 -91.821 RIPI2 La Moine River at Ripley MO 40.025 -90.631 RSDM7 102 River at Rosendale MO 40.046 -94.829 SBEM7 Missouri River at Sibley MO 39.179 -94.18 SCLM7 Missouri River at St. Charles MO 38.786 -90.472 SCZM7 Osage River near Schell City MO 38.056 -94.122 SEEM7 Meramec River near Steelville MO 37.9994 -91.3608 SFLM7 Des Moines River at St. Francisville MO 40.462 -91.567 SJSM7 Missouri River at St. Joseph MO 39.753 -94.858 SLLM7 Meramec River near Sullivan MO 38.158 -91.108 SMHM7 Little Platte River at Smithville MO 39.388 -94.579 SNZM7 Grand River near Sumner MO 39.64 -93.274 SSTM7 Platte River at Sharps Station MO 39.401 -94.727 STTM7 Osage River near St. Thomas MO 38.422 -92.209 SVRM7 Mississippi River at Saverton Lock MO 39.639 -91.25 TAYM7 South Fabius River near Taylor MO 39.897 -91.58 TBNM7 Big Piney at Fort Leonard Wood MO 37.737 -92.081 TIFM7 Elk River near Tiff City MO 36.631 -94.587 TNZM7 North Fork River near Tecumseh MO 36.623 -92.248 TRYM7 Cuivre River at Troy MO 39 -91.002 TTZM7 Thompson River near Trenton MO 40.069 -93.638 UNNM7 Bourbeuse River at Union MO 38.444 -90.995 URHM7 South Grand River at Urich MO 38.453 -94.004 VLLM7 Meramec River at Valley Park MO 38.546 -90.495 VLYM7 Blackwater River near Valley City MO 38.87 -93.623 VNBM7 Current River at Van Buren MO 36.991 -91.015 WCOM7 Spring River near Waco MO 37.246 -94.566 WHGM7 Missouri River at Washington MO 38.611 -91.014 WPHM7 Maries River at Westphalia MO 38.432 -91.99 WVYM7 Missouri River near Waverly MO 39.214 -93.515 WYLM7 Fox River near Wayland MO 40.392 -91.597 ABDM6 Buttahatchie River near Aberdeen MS 33.79 -88.32 ABEM6 Tombigbee River at Aberdeen Lock and Dam MS 33.8297 -88.52 ACML1 Black River at Acme MS 31.267 -91.832 AMYM6 Tombigbee River near Amory MS 33.99 -88.55 ANGM6 Big Sunflower River at Anguilla MS 32.972 -90.778 ARKM6 Coldwater River at Arkabutla Dam MS 34.7497 -90.1336 ARSA4 Mississippi River at Arkansas City MS 33.565 -91.243 BELM6 Yazoo River at Belzoni MS 33.167 -90.493 BGBM6 Tombigbee River at Bigbee MS 34.01 -88.51 BKNM6 Black Creek at Brooklyn MS 31.052 -89.204 BLWM6 Biloxi River near Wortham MS 30.558 -89.119 BOVM6 Big Black River at Bovina MS 32.347 -90.697 BRCM6 Skuna River at Bruce MS 33.97 -89.35 BTAM6 Big Black River at Bentonia MS 32.603 -90.362 CARM6 Pearl River at Carthage MS 32.707 -89.526 CBUM6 Tombigbee River at Stennis Lock and Dam MS 33.52 -88.49 CCTM6 Yalobusha River at Calhoun City MS 33.84 -89.31 CKYM6 Chunky River at Chunky MS 32.326 -88.91 CLMM6 Pearl River at Columbia MS 31.237 -89.848 CLSM6 Leaf River at Collins MS 31.707 -89.407 CLUM6 Luxapallila Creek near Columbus MS 33.51 -88.4 COGL1 Bayou Macon at Como MS 32.092 -91.593 CREM6 East Hobolochitto Creek near Caesar MS 30.571 -89.595 CYNL1 Tensas River at Clayton MS 31.724 -91.544 DIBM6 Tchoutacabouffa River near D'Iberville MS 30.476 -88.893 DLAM6 Strong River at D'lo MS 31.978 -89.898 ENBM6 Pearl River at Edinburg MS 32.799 -89.336 ENDM6 Yocona River at Enid Dam MS 34.1581 -89.9039 ENSM6 Chickasawhay River at Enterprise MS 32.176 -88.819 ETAM6 Little Talahatchie River at Etta MS 34.48 -89.23 FULM6 Tombigbee River near Fulton MS 34.26 -88.45 GDHM6 Pearl River at Lena MS 32.667 -89.646 GEEM6 Mississippi River at Greenville MS 33.292 -91.161 GLFM6 Wolf River above Gulfport MS 30.393 -89.206 GREM6 Yazoo River at Greenwood MS 33.521 -90.184 GRNM6 Yalobusha River at Grenada Dam MS 33.806 -89.771 HATM6 Leaf River at Hattiesburg MS 31.343 -89.279 HBGM6 Bouie Creek at Hattiesburg MS 31.426 -89.415 JACM6 Pearl River at Jackson MS 32.2817 -90.179 JNEL1 Black River at Jonesville L&D MS 31.483 -91.863 JSNM6 Pearl River at Ross Barnett Reservoir MS 32.396 -90.064 KLNM6 Jourdan River at Kiln MS 30.387 -89.441 KSCM6 Yockanookany River at Kosciusko MS 33.032 -89.578 LEGM6 Coldwater River near Lewisburg MS 34.8408 -89.8256 LEKM6 Chickasawhay River at Leaksville MS 31.15 -88.57 LMGM6 Talahatchie River near Lambert MS 34.18 -90.22 LNDM6 Wolf River near Landon MS 30.483 -89.274 LOGM6 Talahatchie River at Locopolis MS 33.97 -90.23 LURM6 Tallahala Creek at Laurel MS 31.681 -89.115 LYMM6 Biloxi River near Lyman MS 30.488 -89.036 MCLM6 Leaf River near McLain MS 31.1 -88.81 MCNM6 Noxubee River at Macon MS 33.1 -88.56 MKSM6 Coldwater River at Marks MS 34.25 -90.27 MNLM6 West Hobolochitto Creek near McNeil MS 30.662 -89.686 MRRM6 Pascagoula River at Merril MS 30.97 -88.73 MTCM6 Pearl River at Monticello MS 31.553 -90.088 NECL1 Boeuf River at Fort Necessity MS 32.072 -91.927 NLGL1 Tensas River at Newlight MS 32.089 -91.49 NTZM6 Mississippi River at Natchez MS 31.538 -91.442 OFAM6 Yockanookany River at Ofahoma MS 32.75 -89.672 OLVM6 Coldwater River near Olive Branch MS 34.9 -89.75 ORAM6 Escatawpa River above Orange Grove MS 30.459 -88.452 OXDM6 Yocona River near Oxford MS 34.26 -89.52 PGFM6 Pascagoula River at Graham Ferry MS 30.611 -88.641 PLAM6 Pearl River at Philadelphia MS 32.841 -89.097 RATM6 Pearl River at Ratliff's Ferry MS 32.594 -89.84 RNTM6 Tallahala Creek near Runnelstown MS 31.33 -89.12 ROCM6 Pearl River at Rockport MS 31.79 -90.143 ROST1 Wolf River at Rossville MS 35.0542 -89.5417 RSAM6 Homochitto River at Rosetta MS 31.325 -91.107 SARM6 Coldwater River near Sarah MS 34.57 -90.23 SHBM6 Chickasawhay River at Shubuta MS 31.857 -88.686 SRDM6 Talahatchie River at Sardis Dam MS 34.3961 -89.7903 SUNM6 Big Sunflower River at Sunflower MS 33.547 -90.543 SWNM6 Talahatchie River near Swan Lake MS 33.86 -90.28 TBBM6 Tibbee Creek near Tibbee MS 33.54 -88.63 TDGL1 Tensas River at Tendal MS 32.432 -91.367 TPOM6 Town Creek at Tupelo MS 34.24 -88.7 TYTM6 Bogue Chitto River near Tylertown MS 31.177 -90.28 VCKM6 Mississippi River at Vicksburg MS 32.312 -90.907 WOOM6 Buffalo River at Woodville MS 31.226 -91.296 WSTM6 Big Black River at West MS 33.194 -89.771 WTGM6 Tuscolameta Creek at Walnut Grove MS 32.588 -89.465 WYNM6 Chickasawhay River near Waynesboro MS 31.68 -88.68 YWGM6 Yalobusha River at Whaley MS 33.626 -90.108 YZOM6 Yazoo River at Yazoo City MS 32.837 -90.442 ABOM8 Clark Fork River above Missoula MT 46.87 -113.93 ACKM8 Armells Creek near Landusky MT 47.6106 -108.6947 ADDM8 Sun River below Diversion Dam near Augusta MT 47.619 -112.692 AGSM8 Sun River at Gibson Dam near Augusta MT 47.6017 -112.7536 ASLM8 Tongue River near Ashland MT 45.872 -106.187 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 48.65 -109.2333 BDCM8 Badger Creek below Four Horns Canal near Browning MT 48.37 -112.8019 BELM8 Clark Fork River below Missoula MT 46.87 -114.13 BFYM8 Clarks Fork of the Yellowstone near Belfry MT 45.01 -109.065 BGCM8 Big Muddy River near Antelope MT 48.68 -104.51 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 45.75 -108.466 BITM8 Bitterroot River near Missoula MT 46.83 -114.06 BLDM8 Boulder River near Boulder MT 46.2111 -112.0908 BONM8 Blackfoot River near Bonner MT 46.9 -113.76 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 45.833 -109.938 CBCM8 Cut Bank Creek near Browning MT 48.6167 -113.035 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 48.36 -114.18 CLBM8 Missouri River near Culbertson MT 48.12 -104.47 CLKM8 Beaverhead River at Clark Canyon Dam near Dillon MT 45.0017 -112.8575 CMRM8 Madison River at Kirby Ranch near Cameron MT 44.889 -111.58 CORM8 Yellowstone River at Corwin Springs MT 45.112 -110.794 DARM8 Bitterroot River near Darby MT 45.97 -114.14 DAYW4 Tongue River at Dayton MT 44.85 -107.3 DBRM8 Dearborn River near Craig MT 47.1992 -112.0956 DILM8 Beaverhead River near Dillon MT 45.305 -112.5625 DKRM8 Tongue River at Tongue River Reservoir MT 45.0829 -106.4615 DLGM8 Clark Fork River at Deer Lodge MT 46.4 -112.74 DMRM8 Milk River near Dodson MT 48.41 -108.29 DRUM8 Clark Fork River near Drummond MT 46.66 -113.16 DSLM8 Tongue River near Decker MT 45.009 -106.835 DTTM8 Teton River near Dutton MT 47.9303 -111.5519 EGRM8 East Gallatin River below Bridger Creek MT 45.725 -111.07 ELCM8 Sun River below Elk Creek near Augusta MT 47.5067 -112.2819 EPRM8 Poplar River near Intl Boundary MT 49 -105.41 ERNM8 Milk River at Rudyard MT 48.975 -110.422 ESSM8 Middle Fork Flathead River near Essex MT 48.26 -113.6 FBNM8 Missouri River at Fort Benton MT 47.8176 -110.6664 FCFM8 North Fork Flathead River near Columbia Falls MT 48.5 -114.13 FISM8 Fisher River near Libby MT 48.36 -115.31 FREM8 Frenchman Creek near Intl Boundary MT 49 -107.3 FRYM8 Yellowstone River at Forsyth MT 46.267 -106.69 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 47.11 -104.72 GLWM8 Milk River near Glasgow MT 48.16 -106.6 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 47.57 -106.92 HLWM8 Musselshell River near Harlowton MT 46.43 -109.84 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 46.638 -111.883 HVRM8 Milk River at Havre MT 48.5639 -109.695 JDRM8 Judith River near Winifred near mouth MT 47.6653 -109.6528 KERM8 Flathead Lake at Polson MT 47.697222 -114.16028 LCPM8 Lake Creek near Power MT 47.7081 -111.4083 LDKM8 Missouri River near Landusky MT 47.63 -108.69 LIVM8 Yellowstone River near Livingston MT 45.597 -110.565 LOCM8 Powder River at Locate MT 46.43 -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 46.293 -108.892 LYDM8 Lake Koocanusa near Libby MT 48.411944 -115.30917 MADM8 Madison River below Ennis Lake near McAllister MT 45.4903 -111.6333 MALM8 Milk River at Malta MT 48.36 -107.88 MDNM8 Muddy Creek near Vaughn MT 47.625 -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 45.07 -105.87 MICM8 Tongue River at Miles City MT 46.385 -105.845 MILM8 Yellowstone River at Miles City MT 46.422 -105.862 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 -111.633 MSBM8 Musselshell River near Mosby MT 46.99 -107.87 MUSM8 Musselshell River at Musselshell MT 46.523 -108.108 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 48.13 -106.36 ORHM8 Rock Creek near Opheim MT 48.97 -106.84 OROI1 Orofino Creek above Whiskey Creek near Orofino MT 46.47 -116.17 PDBM8 Milk River near Cut Bank MT 49.0075 -112.545 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 47.46 -114.92 PLRM8 Poplar River near Poplar MT 48.1 -105.1 POBM8 North Fork Flathead River near Polebridge MT 48.78 -114.28 PPRM8 Poplar River near Intl Boundary MT 48.99 -105.7 PRCM8 Prospect Creek at Thompson Falls MT 47.59 -115.36 RCCM8 Rock Creek near Clinton MT 46.72 -113.68 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 -112.11 RRCM8 Redwater River near Circle MT 47.41 -105.57 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 46.43 -108.572 SACM8 Milk River near Saco MT 48.51 -107.22 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 46.318 -109.46 SHLM8 Marias River near Shelby MT 48.4247 -111.8917 SIDM8 Yellowstone River near Sidney MT 47.67 -104.15 SLDM8 Shields River near Livingston (7NE) MT 45.738 -110.479 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 47.33 -115.04 SSRM8 Sun River near Simms MT 47.5 -111.93 STRM8 St. Regis River near St. Regis MT 47.3 -115.12 STWM8 Stillwater River near Whitefish MT 48.31 -114.38 SWRM8 Swan River near Bigfork MT 48.02 -113.98 TBRM8 Marias River at Tiber Reservoir / Lake Elwell MT 48.318 -111.091 TFKM8 Jefferson River near Three Forks MT 45.9 -111.6 THRM8 Thompson River near Thompson Falls MT 47.6 -115.22 TMPM8 Milk River near Tampico MT 48.31 -106.82 TMRM8 Two Medicine River below South Fork near Browning MT 48.4267 -112.9889 TOSM8 Missouri River near Toston MT 46.15 -111.42 TRYM8 Yaak River near Troy MT 48.56 -115.97 TSFM8 Teton River below South Fork near Choteau MT 47.795 -112.189 TWIM8 Jefferson River near Twin Bridges MT 45.6125 -112.3297 TWNM8 Beaverhead River near Twin Bridges MT 45.384 -112.453 ULMM8 Missouri River near Ulm MT 47.43 -111.39 VAUM8 Sun River near Vaughn MT 47.53 -111.49 VICM8 Bitterroot River near Victor MT 46.43 -114.14 VNRM8 Big Dry Creek near Van Norman MT 47.35 -106.36 VRGM8 Missouri River at Virgelle MT 48 -110.26 WCHM8 Willow Creek near Harrison MT 45.723 -111.741 WGCM8 Middle Fork Flathead River near West Glacier MT 48.5 -114.01 WHRM8 Whitefish River near Whitefish MT 48.34 -114.28 WLLM8 Willow Creek at Willow Creek Reservoir MT 47.547 -112.43 WPTM8 Missouri River near Wolf Point MT 48.07 -105.53 AVLN7 French Broad River at Asheville NC 35.61 -82.58 BGWN7 N.E. Cape Fear River near Burgaw NC 34.6 -77.88 BIRN7 Oconaluftee River at Birdtown NC 35.46 -83.35 BLAN7 French Broad River at Blantyre NC 35.3 -82.63 BLTN7 Swannanoa River at Biltmore NC 35.57 -82.55 BSPN7 Broad River near Boiling Springs NC 35.2108 -81.6978 BYNN7 Haw River near Bynum NC 35.763 -79.133 CHIN7 N.E. Cape Fear River near Chinquapin NC 34.83 -77.83 CLYN7 Neuse River near Clayton NC 35.647 -78.406 CPFN7 Cape Fear River at Lock 1 NC 34.4 -78.29 CTPN7 Pigeon River at Canton NC 35.5219 -82.8481 EFDN7 Fishing Creek near Enfield NC 36.151 -77.693 ELKN7 Yadkin River at Elkin NC 36.24 -80.85 ELZN7 Cape Fear River at Elizabethtown NC 34.63 -78.58 FAYN7 Cape Fear River at Fayetteville NC 35.0504 -78.8583 GLDN7 Neuse River near Goldsboro NC 35.337 -77.998 HAWN7 Haw River at Haw River NC 36.087 -79.367 HOKN7 Contentnea Creek at Hookerton NC 35.4289 -77.5831 HTSN7 French Broad River at Hot Springs NC 35.89 -82.82 KINN7 Neuse River at Kinston NC 35.26 -77.59 LBRN7 Lumber River at Lumberton NC 34.63 -79.02 LOUN7 Tar River at Louisburg NC 36.103 -78.304 LOWN7 South Fork Catawba River at Lowell NC 35.29 -81.1 MANN7 Lower Little River at Manchester NC 35.19347 -78.98542 MARN7 French Broad River near Marshall NC 35.78 -82.66 MCKN7 South Fork Yadkin River near Mocksville NC 35.84 -80.66 MOHN7 Cape Fear River near Moncure NC 35.589 -79.052 NHPN7 Haw River at Jordan Lake NC 35.66 -79.07 NRWN7 Rocky River near Norwood NC 35.148 -80.176 NUDN7 Neuse River at Falls Lake NC 35.92 -78.58 PGVN7 Tar River at Greenville NC 35.62 -77.37 POBN7 Lower Little River near Fort Bragg NC 35.177 -79.025 RKYN7 Tar River at Rocky Mount NC 35.899 -77.866 RRDN7 Roanoke River at Roanoke Rapids NC 36.46 -77.634 SCON7 Roanoke River near Scotland Neck NC 36.209 -77.384 SMFN7 Neuse River at Smithfield NC 35.513 -78.35 STPN7 Cape Fear River at W.O. Huske Lock NC 34.83 -78.83 TARN7 Tar River at Tarboro NC 35.894 -77.533 TKSN7 Tuckasegee River at Bryson City NC 35.43 -83.45 TMVN7 Valley River at Tomotla NC 35.138 -83.98 WKSN7 Yadkin River at Wilkesboro NC 36.15 -81.15 WLLN7 Roanoke River at Williamston NC 35.86 -77.04 WNDN7 Cashie River near Windsor NC 36.0475 -76.9853 YADN7 Yadkin River at Yadkin College NC 35.856 -80.387 ABRN8 Wild Rice River (MN) at Abercrombie ND 46.47 -96.782 BANN8 Souris River near Bantry ND 48.506 -100.434 BIWN8 Missouri River at Bismarck ND 46.7475 -100.82 BREN8 Cannonball River at Breien ND 46.376 -100.934 BVRN8 Beaver Creek at Linton ND 46.2686 -100.2514 DARN8 Souris River at Lake Darling ND 48.45 -101.583 DCBN8 Devils Lake at Creel Bay ND 48.0925 -98.9275 DESN8 Des Lacs River at Foxholm ND 48.371 -101.57 DNDN8 Heart River at Dickinson Dam ND 46.8697 -102.8269 DRTN8 Red River of the North at Drayton ND 48.572 -97.147 ENDN8 Maple River at Enderlin ND 46.622 -97.574 FGON8 Red River of the North at Fargo ND 46.861 -96.783 FOXN8 Souris River near Foxholm ND 48.372 -101.505 GARN8 Missouri River at the Garrison Dam ND 47.5028 -101.4306 GCEN8 James River near Grace City ND 47.558 -98.862 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 48.425 -97.412 HGRN8 Goose River at Hillsboro ND 47.408 -97.06 HWDN8 Sheyenne River at Harwood ND 46.977 -96.893 HZNN8 Knife River near Hazen ND 47.285 -101.622 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 46.889 -98.682 KLSN8 Wintering River below Karlsruhe ND 48.138 -100.539 KNDN8 Sheyenne River at Kindred ND 46.631 -97.001 KSLN8 James River near Kensal ND 47.399 -98.797 LAMN8 James River at LaMoure ND 46.356 -98.306 LBNN8 Sheyenne River at Lisbon ND 46.447 -97.679 LGNN8 Souris River at Logan ND 48.15 -101.15 LMCN8 Little Muddy River near Williston ND 48.283 -103.567 LUDN8 James River near Ludden ND 45.948 -98.175 MDAN8 Little Missouri River at Medora ND 46.917 -103.517 MDNN8 Heart River near Mandan ND 46.834 -100.974 MENN8 Apple Creek near Menoken ND 46.794 -100.657 MINN8 Souris River near Minot ND 48.246 -101.371 MION8 Souris River at Minot-Broadway Bridge ND 48.233 -101.3 MNGN8 Knife River at Manning ND 47.236 -102.769 MPLN8 Maple River near Mapleton ND 46.867 -97.106 MTHN8 Little Missouri River at Marmarth ND 46.296 -103.918 MTON8 Forest River at Minto ND 48.286 -97.37 NCEN8 Pembina River at Neche ND 48.989 -97.557 OKEN8 James River near Oakes ND 46.138 -98.115 PBNN8 Red River of the North at Pembina ND 48.974 -97.238 PGEN8 Pipestem Creek near Pingree ND 47.167 -98.969 REGN8 Cannonball River at Regent ND 46.426 -102.551 RLGN8 Cedar Creek near Raleigh ND 46.084 -101.333 SHWN8 Souris River near Sherwood ND 48.99 -101.958 SWRN8 Souris River at Sawyer ND 48.1 -101.05 TOWN8 Souris River near Towner ND 48.35 -100.417 TRTN8 Beaver Creek near Trotters ND 47.1631 -103.9922 VCRN8 Sheyenne River at Valley City ND 46.916 -98.01 VLVN8 Souris River at Velva ND 48.067 -100.933 WFON8 Sheyenne River at West Fargo Diversion ND 46.891 -96.918 WHNN8 Red River of the North at Wahpeton ND 46.266 -96.599 WLCN8 Willow Creek near Willow City ND 48.584 -100.435 WLHN8 Pembina River at Walhalla ND 48.914 -97.917 WLTN8 Missouri River near Williston ND 48.108 -103.714 WSTN8 Souris River near Westhope ND 48.996 -100.958 WTFN8 Little Missouri River near Watford City ND 47.596 -103.263 ZAPN8 Spring Creek at Zap ND 47.283 -101.917 ABRN1 Little Nemaha River near Auburn NE 40.392 -95.813 ALDN1 Wood River near Alda NE 40.853 -98.472 ASDN1 Salt Creek (ADAK1) at Ashland NE 41.041 -96.371 ASLN1 Platte River near Ashland NE 41.062 -96.324 BARN1 Big Blue River near Barneston NE 40.044 -96.587 BDYN1 North Platte River at Brady NE 41.019 -100.371 BEAN1 Big Blue River at Beatrice NE 40.256 -96.746 BEKN1 Republican River near Benkelman NE 40.0094 -101.5422 BENN1 Republican River near Benkelman NE 40.035 -101.543 BEVN1 Beaver Creek near Beaver City NE 40.12 -99.893 BGPN1 North Platte River at Bridgeport NE 41.667 -103.104 BLAN1 Missouri River near Blair NE 41.534 -96.096 BRON1 Missouri River at Brownville NE 40.399 -95.653 BVSN1 Sappa Creek near Beaver City NE 40.047 -99.89 CABN1 Harry Strunk Reservoir at Harry Strunk Reservoir NE 40.35 -100.22 CAMN1 Republican River at Cambridge NE 40.285 -100.146 CLBN1 Shell Creek at Columbus NE 41.526 -97.282 COZN1 Platte River near Cozad NE 40.859 -99.978 CRTN1 Big Blue River near Crete NE 40.596 -96.959 CULN1 Republican River at Culbertson NE 40.2347 -100.8777 DCTN1 Missouri River at Decatur NE 42.007 -96.241 DNCN1 Platte River near Duncan NE 41.368 -97.494 DRGN1 West Fork Big Blue River near Dorchester NE 40.731 -97.177 DWEN1 Little Blue River near Deweese NE 40.35 -98.059 EWIN1 Elkhorn River at Ewing NE 42.2712 -98.3337 FLLN1 Big Nemaha River near Falls City NE 40.036 -95.596 FRBN1 Little Blue River near Fairbury NE 40.14 -97.189 FULN1 Cedar River near Fullerton NE 41.395 -98.003 GBBN1 Wood River near Gibbon NE 40.771 -98.797 GELN1 Loup River near Genoa NE 41.418 -97.724 GEON1 Genoa-Beaver Creek at Genoa NE 41.472 -97.736 GRIN1 Platte River near Grand Island NE 40.867 -98.283 GRNN1 Salt Creek (ADAK1) near Greenwood NE 40.966 -96.45 GUIN1 Republican River at Guide Rock NE 40.064 -98.331 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 40.157 -95.944 HDYN1 Republican River near Hardy NE 39.992 -97.931 HENN1 North Platte River at Henry NE 41.99 -104.049 HMRN1 Omaha Creek at Homer NE 42.321 -96.488 HOON1 Elkhorn River at Hooper NE 41.625 -96.55 ITHN1 Wahoo Creek at Ithaca NE 41.144 -96.536 KEAN1 Platte River near Kearney NE 40.659 -99.086 LCNN1 Salt Creek (ADAK1) at Lincoln NE 40.847 -96.682 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 41.015 -96.158 LSON1 North Platte River at Lisco NE 41.484 -102.6207 MCKN1 Republican River at McCook NE 40.1461 -100.673 MICN1 North Platte River near Mitchell NE 41.927 -103.813 MKLN1 Missouri River near Maskell NE 42.7172 -96.9556 MKRN1 Republican River at McCook NE 40.188 -100.618 MNTN1 North Platte River near Minatare NE 41.79 -103.519 MRNN1 Missouri River at Niobrara NE 42.7617 -98.0278 MRPN1 Missouri River near Ponca NE 42.575 -96.6833 MRVN1 Missouri River near Verdel NE 42.7889 -98.0803 NBDN1 Platte River near North Bend NE 41.453 -96.764 NEBN1 Missouri River at Nebraska City NE 40.682 -95.847 NFKN1 Elkhorn River near Norfolk NE 42.004 -97.425 NLIN1 Elkhorn River at Neligh NE 42.13 -98.027 NPSN1 South Platte River at North Platte NE 41.1 -100.7737 NPTN1 North Platte River at North Platte NE 41.175 -100.7527 OMHN1 Missouri River at Omaha NE 41.259 -95.922 ORNN1 Republican River near Orleans NE 40.131 -99.502 OVTN1 Platte River near Overton NE 40.683 -99.541 PALN1 Frenchman Creek at Palisade NE 40.332 -101.1258 PASN1 Stinking Water Creek at Palisade NE 40.402 -101.1258 PLGN1 Elkhorn River at Pilger NE 41.996 -97.058 PRCN1 North Fk Elkhorn River near Pierce NE 42.149 -97.478 REPN1 Republican River at Harlan Reservoir NE 40.079 -99.168 RIVN1 Wood River near Riverdale NE 40.799 -99.197 ROCN1 Salt Creek (ADAK1) at Roca NE 40.658 -96.665 RSON1 South Platte River at Roscoe NE 41.126 -101.576 RULN1 Missouri River at Rulo NE 40.054 -95.422 RVNN1 South Loup River at Ravenna NE 41.012 -98.912 RVRN1 Republican River near Riverton NE 40.05 -98.765 RVTN1 Thompson Creek at Riverton NE 40.1 -98.761 SMIN1 South Loup River at St. Michael NE 41.031 -98.74 SPKN1 Niobrara River near Sparks NE 42.902778 -100.361111 SPLN1 Middle Loup River near St. Paul NE 41.2 -98.45 SPUN1 North Loup River near St. Paul NE 41.267 -98.45 SRPN1 Big Blue River at Surprise NE 41.101 -97.31 SSCN1 Missouri River at Sioux City NE 42.486 -96.414 STMN1 Sappa Creek at Stamford NE 40.131 -99.554 STTN1 Republican River at Stratton NE 40.1411 -101.2291 SWDN1 Lincoln Creek at Seward NE 40.916 -97.145 SWRN1 Big Blue River near Seward NE 40.903 -97.111 SWTN1 Mud Creek at Sweetwater NE 41.038 -98.993 TYLN1 North Loup River at Taylor NE 41.776944 -99.379167 UEHN1 Logan Creek at Uehling NE 41.713 -96.522 UION1 Weeping Water Creek near Union NE 40.793 -95.911 VERN1 Ponca Creek at Verdel - Ponca Crk NE 42.811 -98.176 VRDN1 Niobrara River near Verdel NE 42.74 -98.224 WLBN1 Turkey Creek near Wilber NE 40.48 -97.012 WPNN1 Elkhorn River near West Point NE 41.839 -96.727 WTRN1 Elkhorn River at Waterloo NE 41.294 -96.283 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 44.42 -71.72 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 43.02 -71.53 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 43.77 -71.68 PTRN3 Contoocook River at Peterborough NH 42.8666 -71.9667 RUMN3 Baker River at Rumney NH 43.8 -71.85 SOHN3 Souhegan River at Merrimack NH 42.85 -71.5 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 43.65 -72.32 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 40.475 -74.5761 BNTN4 Rockaway River at Boonton above reservoir NJ 40.9028 -74.41 BONN4 Rockaway River at Boonton below reservoir NJ 40.8969 -74.395 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 -74.95 HOHN4 Hohokus Brook at Ho-Ho-Kus NJ 40.997778 -74.113333 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 40.68 -74.5289 MNVN4 Raritan River at Manville NJ 40.555 -74.5839 MOLN4 Molly Ann Brook at N. Haledon NJ 40.95305 -74.185 MTGN4 Delaware River at Montague NJ 41.3092 -74.7953 NMLN4 Hackensack River at New Milford NJ 40.948333 -74.026944 PEBN4 North Branch Rancocas Creek at Pemberton NJ 39.97 -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 -75.19 RIVN4 Hackensack River at Rivervale NJ 40.999167 -73.989722 RRTN4 North Branch Raritan River near Raritan NJ 40.5706 -74.6792 RWDN4 Saddle River at Ridgewood NJ 40.984722 -74.091667 RWYN4 Rahway River at Rahway NJ 40.618889 -74.283333 SADN4 Upper Saddle at Saddle NJ 41.058889 -74.095278 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 40.8 -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 40.845 -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 40.99277 -74.02111 ABQN5 Rio Grande at Albuquerque NM 35.0892 -106.68 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 36.72139 -108.20139 ATCN5 Pecos River below Anton Chico NM 35.1789 -105.1083 ATSN5 Pecos River near Pecos River 4E Artesia NM 32.84 -104.32 BNDN5 Rio Puerco near Bernardo NM 34.4092 -106.8525 CAAN5 Rio Grande near Caballo NM 32.885 -107.292 CDRC2 Animas River above Cedar Hill NM 37.0381 -107.8736 CERN5 Rio Grande near Cerro NM 36.74 -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 32.41 -104.22 CRBN5 Rocky Arroyo at NW Carlsbad NM 32.51 -104.37 CSBN5 Pecos River near Pecos River 8NW Carlsbad NM 32.51 -104.33 CTDN5 Rio Grande above Cochiti Pueblo NM 35.6181 -106.3233 DACN5 Dark Canyon Draw at Carlsbad NM 32.41 -104.23 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 32.74 -104.41 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 -108.225 GILN5 Gila River near Gila NM 33.061 -108.537 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 32.648 -108.845 JEZN5 Jemez River above Jemez Pueblo NM 35.6617 -106.7428 LBDN5 Rio Grande at Leasburg Dam NM 32.479 -106.919 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 32.855 -107.973 MLAN5 Black River near Black River 5W Malaga NM 32.23 -104.15 MLGN5 Pecos River near Pecos River 3SE Malaga NM 32.21 -104.02 MSLN5 Rio Grande near Mesilla NM 32.164 -106.731 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 34.73 -104.5244 RBFN5 Pecos River above Red Bluff Lake NM 32.08 -104.04 RCAN5 Rio Chama above Abiquiu NM 36.3183 -106.5972 RCEN5 Rio Chama below El Vado Dam NM 36.58 -106.7233 RDBN5 Delaware River near Red Bluff Lake NM 32.02 -104.05 RGCN5 Galisteo Creek near Rosario NM 35.4647 -106.2136 RGRN5 Gila River near Redrock NM 32.727 -108.675 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 36.32 -105.7539 TLCN5 Tularosa Creek near Bent NM 33.145 -105.897 TYLN5 Canadian River at Taylor Springs NM 36.2958 -104.4933 AMRN2 Amargosa River at Beatty NV 36.91 -116.76 CMSN2 Humboldt River at Comus NV 40.992 -117.316 GRDN2 East Fork Carson River near Gardnerville NV 38.845 -119.7036 HBMN2 Humboldt River at Battle Mountain NV 40.667 -116.93027 HREN2 Humboldt River near Elko NV 40.9361 -115.62361 KIDN2 Las Vegas Wash below Henderson NV 36.1003 -114.9433 MBON2 Marys River near Charleston NV 41.55 -115.30583 MOAN2 Muddy River near Moapa NV 36.71 -114.69 MTBN2 Marys River near Deeth NV 41.154 -115.27027 MUDN2 Muddy River near Glendale NV 36.64 -114.54 MVEN2 Meadow Valley Wash near Ursine NV 38 -114.21 MVYN2 Meadow Valley Wash near Caliente NV 37.56 -114.56 PALN2 Humboldt River at Palisade NV 40.60694 -116.20138 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 -119.7 VRON2 Virgin River near Overton NV 36.58 -114.32 ALBN6 Hudson River at Albany NY 42.6461 -73.7472 ARTN6 Black River at Watertown NY 43.98 -75.92 ASEN6 Esopus Creek at Ashokan Reservoir East NY 41.97 -74.16 ASFN6 East Branch of the Ausable River at Au Sable Forks NY 44.4333 -73.7 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 42.8 -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 42.07 -75.37 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 -75.9 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 -76.635 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 42.07 -75.37 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 -73.5014 DDMN6 Mohawk River at Delta Dam NY 43.27 -75.43 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 42.08 -74.97 EAGN6 Hoosic River at Eagle Bridge NY 42.93 -73.37 EBZN6 Cazenovia Creek at Ebenezer NY 42.83 -78.78 ESDN6 Ouleout Creek at East Sidney Dam NY 42.33 -75.23 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 42.85 -78.75 GILN6 Schoharie Creek at Gilboa Dam NY 42.4 -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 42.47 -78.93 GRBN6 Oatka Creek at Garbutt NY 43.01 -77.7917 GRDN6 Wallkill at Gardiner NY 41.68 -74.15 GVVN6 Mettawee River at Middle Granville NY 43.47 -73.28 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 43.32 -75.12 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 43.75 -74.28 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 42.88 -78.65 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 42.733 -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 -75.639 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 42.12 -78.42 ONDN6 Onondaga Creek at Syracuse NY 42.983 -76.151 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 44.67 -73.47 PEPN6 East Branch Delaware River at Pepacton Dam NY 42.08 -74.97 PIEN6 Raquette River at Piercefield NY 44.2347 -74.5722 POUN6 Hudson River below Poughkeepsie NY 41.6333 -73.92 PRTN6 Genesee River at Portageville NY 42.5702 -78.0425 PTVN6 Schoharie Creek at Prattsville NY 42.328 -74.4422 RAMN6 Ramapo River at Ramapo NY 41.140278 -74.168889 RAPN6 Tonawanda Creek at Rapids NY 43.093 -78.6364 RCKN6 Unadilla River at Rockdale NY 42.3778 -75.4064 RHRN6 Genesee River at Rochester NY 43.18 -77.63 RONN6 Rondout Creek at Rondout Rsvr NY 41.7992 -74.43 ROSN6 Rondout Creek at Rosendale NY 41.85 -74.08 ROUN6 Lake Champlain/Richelieu River at Rouses Point NY 44.98 -73.37 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 42.825 -73.92 SFFN6 Ramapo River at Suffern NY 41.118333 -74.160556 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 41.140833 -74.116944 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 41.65 -73.88 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 43.55 -73.4 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 -84.51 CDIO1 Wills Creek at Cambridge OH 40.0144 -81.5872 CHCO1 Scioto River at Chillicothe OH 39.33 -82.96 CIRO1 Scioto River at Circleville OH 39.6014 -82.9553 COLO1 Scioto River at Columbus (Frank Rd) OH 39.9 -83 CPBO1 Maumee River at Napoleon OH 41.3875 -84.1225 CSHO1 Muskingum River below Coshocton OH 40.2483 -81.873 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 39.765278 -84.1975 ELRO1 Black River at Elyria OH 41.380278 -82.104722 ENTO1 Hocking River at Enterprise OH 39.565 -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 41.42 -83.87 HAMO1 Great Miami River at Hamilton OH 39.3911 -84.5722 HANO1 Ohio River at Hannibal L&D OH 39.6669 -80.87 INDO1 Cuyahoga River at Independence OH 41.3953 -81.63 KILO1 Killbuck Creek at Killbuck OH 40.4811 -81.9864 KIMO1 Little Miami River at Kings Mills OH 39.35 -84.25 KIRO1 West Branch Mahoning River at Kirwan Reservoir OH 41.15 -81.0833 KITO1 West Branch Mahoning River below M J Kirwan Dam OH 41.15 -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 39.64 -84.2897 MCCO1 Muskingum River at McConnelsville Old Lock 7 OH 39.6539 -81.8569 MELO1 Ohio River at Meldahl Dam OH 38.795 -84.1517 MFLO1 Sunday Creek at Milfield OH 39.4298 -82.1008 MIAO1 Great Miami River at Miamitown OH 39.2 -84.6997 MILO1 Huron River at Milan OH 41.3011 -82.61 MISO1 Mosquito Creek at Mosquito Creek Lake OH 41.3833 -80.75 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 41.3 -80.7667 MTAO1 Ohio River at Marietta Pumphouse OH 39.4104 -81.4579 MVEO1 Kokosing River at Mt Vernon OH 40.4056 -82.3 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 -84.05 PERO1 East Fork Little Miami River at Perintown OH 39.13 -84.23 PKTO1 Scioto River at Piketon OH 39.0706 -83.0197 PNVO1 Grand River at Painesville OH 41.718889 -81.228056 PORO1 Ohio River at Portsmouth OH 38.75 -83 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 40.694722 -84.646667 RNOO1 Ohio River at Willow Island Lock OH 39.3617 -81.285 SBVO1 Ohio River at Steubenville OH 40.3583 -80.6111 SIDO1 Great Miami River at Sidney OH 40.2869 -84.15 SPRO1 Mad River at Springfield OH 39.92 -83.87 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 41.5 -83.7128 WUNO1 Ohio Brush Creek at West Union OH 38.8036 -83.4211 YGWO1 Mahoning River at Youngstown OH 41.105 -80.6628 ZANO1 Muskingum River at Zanesville OH 39.9333 -82.0167 ALXO2 Washita River at Alex OK 34.926 -97.774 ANDO2 Washita River at Anadarko OK 35.084 -98.243 ANTO2 Kiamichi River near Antlers OK 34.243 -95.605 ARCT2 Red River at Arthur City OK 33.876 -95.502 AVAO2 Salt Fork River near Alva OK 36.815 -98.648 AVTO2 Bird Creek at Avant OK 36.485 -96.06 BFFO2 Cimarron River near Buffalo OK 36.852 -99.315 BGSO2 Deep Fork River near Beggs OK 35.639 -96.068 BLKO2 Chikaskia River near Blackwell OK 36.811 -97.277 BLUO2 Blue River near Blue OK 33.997 -96.241 BMSO2 Chikaskia River near Braman OK 35.9506 -97.3939 BRIO2 Canadian River near Bridgeport OK 35.544 -98.318 BVLO2 Caney River at Bartlesville OK 36.755 -95.972 BVRO2 Beaver River at Beaver OK 36.82 -100.52 CAGO2 Washita River near Carnegie OK 35.117 -98.564 CARO2 North Fork Red River near Carter OK 35.168 -99.507 CCKO2 Washita River near Chickasha OK 35.086 -97.96 CHYO2 Washita River near Cheyenne OK 35.626 -99.668 CLIO2 Washita River near Clinton OK 35.531 -98.967 CLRO2 Verdigris River near Claremore OK 36.307 -95.698 CLVO2 Canadian River near Calvin OK 34.978 -96.243 CNEO2 Clear Boggy Creek near Caney OK 34.253 -96.205 COMO2 Neosho River near Commerce OK 36.929 -94.957 CVLO2 Caney River near Collinsville OK 36.395 -95.811 DOVO2 Cimarron River near Dover OK 35.952 -97.914 DURO2 Washita River near Dickson OK 34.233 -96.976 EAGO2 Mountain Fork near Eagletown OK 34.0417 -94.6197 ELDO2 Baron Fork at Eldon OK 35.921 -94.833 ELNO2 North Canadian River near El Reno OK 35.563 -97.957 FRSO2 Muddy Boggy Creek near Farris OK 34.271 -95.912 GBRO2 Beaver River at Goodwell OK 36.69 -101.69 GCCO2 Coldwater Creek at Guymon OK 36.57 -101.38 GLOO2 Glover River at Glover OK 34.0975 -94.9019 GSVT2 Red River near Gainesville OK 33.728 -97.16 GTRO2 Cimarron River near Guthrie OK 35.921 -97.426 GUCO2 Cottonwood Creek at Guthrie OK 35.879 -97.431 HEAO2 North Fork Red River near Headrick OK 34.638 -99.103 HRHO2 North Canadian River near Harrah OK 35.5 -97.194 HSKO2 Arkansas River near Haskell OK 35.821 -95.639 HVRO2 Wildhorse Creek near Hoover OK 34.541 -97.247 IDBO2 Little River near Idabel OK 33.9411 -94.7583 INOO2 Verdigris River near Inola OK 36.165 -95.619 JNKO2 Polecat Creek near Jenks OK 36.01 -95.993 KENO2 Cimarron River at Kenton OK 36.93 -102.98 KNGO2 Kingfisher Creek at Kingfisher OK 35.883 -97.945 KNRO2 Uncle John Creek at Kingfisher OK 35.86 -97.922 KNSO2 Flint Creek near Kansas OK 36.186 -94.707 LEPO2 Verdigris River near Lenapah OK 36.851 -95.585 LNDO2 Washita River at Lindsay OK 34.818 -97.598 MGMO2 Salt Fork Red River at Mangum OK 34.858 -99.508 MKGO2 Arkansas River at Muskogee OK 35.769 -95.299 NKHO2 Little Washita River near Ninnekah OK 34.963 -97.896 OKBO2 North Canadian River at Oklahoma City OK 35.566 -97.367 ONEO2 Cimarron River near Okeene OK 36.12 -98.168 OWSO2 Bird Creek near Owasso OK 36.248 -95.867 PANO2 Poteau River near Panama OK 35.163 -94.647 PAWO2 Black Bear Creek at Pawnee OK 36.344 -96.799 PCYO2 Arkansas River near Ponca City OK 36.699 -96.922 PLVO2 Washita River near Pauls Valley OK 34.755 -97.251 PRCO2 Canadian River at Purcell OK 35.014 -97.347 PRKO2 Cimarron River near Perkins OK 35.959 -97.033 PTAO2 Poteau River at Poteau OK 35.06 -94.603 QUAO2 Spring River near Quapaw OK 36.934 -94.746 RAMO2 Caney River near Ramona OK 36.509 -95.842 RLSO2 Arkansas River at Ralston OK 36.504 -96.728 RNDO2 Deep Red Creek near Randlett OK 34.221 -98.453 RPDO2 Palo Duro Creek at Hardesty OK 36.54 -101.08 SASO2 Little River near Sasakwa OK 34.965 -96.512 SEIO2 North Canadian River near Seiling OK 36.183 -98.921 SPCO2 Polecat Creek near Sapulpa OK 35.988 -96.082 SPEO2 Bird Creek near Sperry OK 36.278 -95.954 SWDO2 Cottonwood Creek near Seward OK 35.814 -97.478 SWNO2 North Canadian River near Shawnee OK 35.333 -96.959 TALO2 Illinois River near Tahlequah OK 35.923 -94.912 TCMO2 Little River near Tecumseh OK 35.173 -96.932 TGAO2 Canadian River near Taloga OK 36.052 -98.967 TLSO2 Arkansas River near Tulsa OK 36.141 -96.006 TONO2 Salt Fork River at Tonkawa OK 36.672 -97.309 TRLO2 Red River near Terral OK 33.879 -97.934 UNIO2 Canadian River near Union City OK 35.364 -97.931 WAKO2 Beaver Creek near Waurika OK 34.163 -98.003 WANO2 Cimarron River near Waynoka OK 36.517 -98.879 WATO2 North Canadian River near Watonga OK 35.812 -98.421 WDWO2 North Canadian River at Woodward OK 36.449 -99.399 WETO2 North Canadian River near Wetumka OK 35.266 -96.206 WLTO2 East Cache Creek other Walters (USGS) OK 34.362 -98.282 WTTO2 Illinois River near Watts OK 36.13 -94.572 YUKO2 North Canadian River near Yukon OK 35.54 -97.742 AGNO3 Rogue River near Agness OR 42.581 -124.058 ALBO3 Willamette River at Albany OR 44.639 -123.106 APRO3 Applegate River near Applegate OR 42.25 -123.133 ARWO3 Applegate River near Wilderville OR 42.35 -123.4 ASTO3 Columbia River at Astoria OR 46.208 -123.767 AURO3 Pudding River at Aurora OR 45.233 -122.749 AZAO3 Cow Creek near Azalea OR 42.825 -123.178 BEAO3 Nestucca River near Beaver OR 45.267 -123.846 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 42.447 -121.238 CANO3 Molalla River near Canby OR 45.244 -122.686 CHTO3 Chetco River near Brookings OR 42.124 -124.186 CKKO3 Crooked River near Terrebone OR 44.3583 -121.1178 COCO3 Clackamas River near Oregon City OR 45.379 -122.576 COGO3 Cow Creek above Azalea OR 42.823 -123.125 COQO3 Coquille River at Coquille OR 43.171 -124.188 CORO3 Willamette River at Corvallis OR 44.566 -123.257 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 -116.05 CWMO3 Cow Creek at Glendale OR 42.743 -123.44 DEBO3 Deschutes River below Bend OR 44.0831 -121.3067 DEEO3 Deer Creek at Roseburg OR 43.22 -123.27 DETO3 N Santiam River at Detroit Lake OR 44.7222 -122.2486 DLLO3 Tualatin River near Dilley OR 45.475 -123.123 DONO3 Donner und Blitzen River near French Glen OR 42.79111 -118.8667 ECDO3 Elk creek near Drain OR 43.64 -123.299 EGLO3 Rogue River near Eagle Point OR 42.526 -122.861 EKTO3 Umpqua River near Elkton OR 43.586 -123.554 ELKO3 Elk Creek near Trail OR 42.675 -122.744 ESTO3 Clackamas River near Estacada OR 45.301 -122.354 EUGO3 Willamette River at Eugene OR 44.05 -123.083 FRMO3 Tualatin River at Farmington OR 45.449 -122.949 FSSO3 Nehalem River near Foss OR 45.704 -123.754 GIBO3 Umatilla River near Gibbon OR 45.7197 -118.3222 GLIO3 North Umpqua River near Glide OR 43.317 -122.817 GLNO3 West Fork Cow Creek near Glendale OR 42.8 -123.617 GRAO3 Rogue River at Grants Pass OR 42.431 -123.317 HARO3 Willamette River at Harrisburg OR 44.271 -123.172 IMNO3 Imnaha River at Imnaha OR 45.5622 -116.8331 JFFO3 Santiam River at Jefferson OR 44.715 -123.011 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 42.232 -123.664 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 45.206 -123.181 MEHO3 N Santiam River at Mehama OR 44.789 -122.617 MFDO3 Bear Creek at Medford OR 42.333 -122.867 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 -120.9 MONO3 North Fork John Day River near Monument OR 44.815 -119.4306 MPLO3 Siuslaw River near Mapleton OR 44.063 -123.882 MYKO3 McKay Creek above Reservoir OR 45.5492 -118.7733 MYNO3 North Fk Coquille River near Myrtle Point OR 43.071 -124.106 MYPO3 South Fk Coquille River at Myrtle Point OR 43.071 -124.148 OCHO3 Ochoco Creek below Ochoco Reservoir OR 44.2994 -120.7264 OCUO3 Willamette River above Falls at Oregon City OR 45.348 -122.621 OKPO3 Oak Grove Fork above Powerplant Intake nr Estacada 24SE OR 45.0714 -121.9394 ORCO3 Willamette River below Falls at Oregon City OR 45.358 -122.611 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 44.526 -123.333 PICO3 Butter Creek near Pine City OR 45.5444 -119.3111 POWO3 South Fk Coquille River at Powers OR 42.892 -124.069 PRTO3 Willamette River at Portland OR 45.519 -122.667 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 42.924 -123.429 REEO3 Umpqua River at Reedsport OR 43.704 -124.094 ROMO3 Owyhee River at Rome OR 42.8672 -117.6644 RSBO3 South Umpqua River at Roseburg OR 43.209 -123.347 RUNO3 Bull Run River near Bull Run OR 45.4706 -121.8653 RYGO3 Rogue River below Gold Ray Dam OR 42.438 -122.986 SCRO3 Steamboat Creek near Glide OR 43.35 -122.73 SERO3 John Day River at Service Creek OR 44.7939 -120.0056 SHNO3 Columbia River at St. Helens OR 45.864 -122.796 SILO3 Siletz River at Siletz OR 44.715 -123.886 SLMO3 Willamette River at Salem OR 44.944 -123.042 SNDO3 Sandy River near Bull Run OR 45.449 -122.244 SPRO3 Mohawk River near Springfield OR 44.093 -122.956 SURO3 South Umpqua River near Riddle OR 42.952 -123.333 SUVO3 Luckiamute River near Suver OR 44.783 -123.233 SYCO3 Johnson Creek near Sycamore OR 45.478 -122.507 TIDO3 Alsea River near Tidewater OR 44.386 -123.8306 TILO3 South Umpqua River near Tiller OR 42.93 -122.947 TLFO3 Tualatin River below Lee Falls nr Gaston 6WNW OR 45.5058 -123.2183 TLYO3 Clackamas River above Three Lynx Creek OR 45.125 -122.0722 TRAO3 Trask River near Tillamook OR 45.446 -123.709 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 44.125 -122.469 WINO3 North Umpqua River at Winchester Dam OR 43.283 -123.354 WMSO3 Williamson River below Chiloquin OR 42.565 -121.878 WNRO3 North Umpqua River near Winchester OR 43.268 -123.409 WSLO3 Tualatin River at West Linn OR 45.351 -122.675 WSNO3 South Umpqua River near Winston OR 43.134 -123.398 WTLO3 S. Santiam River at Waterloo OR 44.499 -122.822 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 41.081 -77.55 BETP1 Lehigh River at Bethlehem PA 40.6153 -75.3792 BMBP1 Susquehanna River at Bloomsburg PA 40.996 -76.421 BREP1 Schuylkill River at Berne PA 40.5225 -75.9986 BUSP1 Kettle Creek at Bush Dam PA 41.37 -77.93 CDFP1 Brandywine Creek at Chadds Ford PA 39.8697 -75.5936 CEDP1 Pine Creek at Cedar Run PA 41.552 -77.448 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 41.98 -77.15 CPHP1 Yellow Breeches Creek near Camp Hill PA 40.225 -76.898 CRWP1 West Branch Susquehanna River at Curwensville Dam PA 40.95 -78.53 DANP1 Susquehanna River at Danville PA 40.958 -76.619 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 -79.668 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 40.255 -76.886 HERP1 Swatara Creek near Hershey PA 40.298 -76.668 HGSP1 Conodoguinet Creek near Hogestown PA 40.252 -77.021 HTVP1 Swatara Creek at Harper Tavern PA 40.403 -76.578 HUJP1 Juniata River at Huntingdon PA 40.485 -78.019 HWYP1 Lackawaxen River at Hawley PA 41.4761 -75.1725 ILTP1 West Branch Susquehanna River at Milton PA 41.019 -76.865 JHNP1 Clarion River at Johnsonburg PA 41.486 -78.679 JHSP1 Conemaugh River at Johnstown PA 40.3414 -78.9261 JRSP1 West Branch Susquehanna River at Jersey Shore PA 41.203 -77.253 KARP1 West Branch Susquehanna River at Karthaus PA 41.118 -78.109 KTTP1 Allegheny River at Kittanning L&D PA 40.8183 -79.53 LHTP1 Lehigh River at Lehighton PA 40.8292 -75.7056 LHVP1 West Branch Susquehanna River at Lock Haven PA 41.138 -77.442 LNCP1 Conestoga River at Lancaster PA 40.05 -76.278 LNGP1 Neshaminy Creek at Langhorne PA 40.1739 -74.9572 LOYP1 Loyalsock Creek at Loyalsockville PA 41.325 -76.913 LWBP1 West Branch Susquehanna River at Lewisburg PA 40.968 -76.874 LWSP1 Juniata River at Lewistown PA 40.594 -77.583 LWVP1 Cowanesque River near Lawrenceville PA 42 -77.14 MAXP1 Monongahela River at Maxwell L&D PA 40.0008 -79.9605 MCYP1 West Branch Susquehanna River near Muncy PA 41.206 -76.801 MEDP1 French Creek at Meadville PA 41.6325 -80.1597 MFDP1 Tioga River at Mansfield PA 41.75 -77.08 MGYP1 Ohio River at Montgomery L&D PA 40.6483 -80.385 MHPP1 Susquehanna River at Meshoppen PA 41.6072 -76.0506 MIDP1 Swatara Creek at Middletown PA 40.2 -76.717 MNSP1 Brodhead Creek at Minisink Hills PA 40.9986 -75.1431 MONP1 Towanda Creek at Monroeton PA 41.7069 -76.485 MOSP1 Allegheny River at Mosgrove L&D PA 40.8944 -79.4769 MPLP1 Juniata River at Mapleton Depot PA 40.392 -77.935 MRTP1 Susquehanna River at Marietta PA 40.054 -76.531 MTGP1 West Branch Susquehanna River at Montgomery PA 41.169 -76.875 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 40.478 -77.129 NRSP1 Schuylkill River at Norristown PA 40.1167 -75.35 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 40.37 -76.02 PMRP1 Monongahela River at Point Marion L&D PA 39.728 -79.9122 PNCP1 Penns Creek at Penns Creek PA 40.867 -77.049 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 41.324 -77.751 RSSP1 Conewango Creek at Russell PA 41.9381 -79.1333 RTDP1 Raystown Branch Juniata River at Raystown Dam PA 40.43 -78 SBYP1 Susquehanna River at Sunbury PA 40.835 -76.826 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 40.28 -77.89 SMDP1 Sherman Creek at Shermans Dale PA 40.323 -77.169 SNCP1 Red Bank Creek at St Charles PA 40.9944 -79.3944 SNNP1 Sinnemahoning Creek at Sinnemahoning PA 41.317 -78.103 SPKP1 Little Juniata River at Spruce Creek PA 40.613 -78.141 STSP1 Youghiogheny River at Sutersville PA 40.24 -79.8066 STVP1 First Fork Sinnemahoning Creek at Stevenson Dam PA 41.4 -78.02 SWDP1 Conemaugh River at Seward PA 40.4191 -79.0263 SXTP1 Raystown Branch Juniata River at Saxton PA 40.216 -78.266 SYDP1 Bald Eagle Creek at Sayers Dam PA 41.05 -77.63 TGAP1 Tioga River at Tioga-Hammond Dam PA 41.9 -77.15 TGJP1 Tioga River at Tioga Junction PA 41.95 -77.12 TNKP1 Tunkhannock Creek at Tunkhannock PA 41.5583 -75.895 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 41.082 -76.864 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 41.12 -75.73 WIBP1 Frankstown Branch Juniata River at Williamsburg PA 40.463 -78.2 WILP1 West Branch Susquehanna River at Williamsport PA 41.236 -76.997 WNTP1 Lehigh River at Walnutport PA 40.7569 -75.6033 WRRP1 Allegheny River at Warren PA 41.85 -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 -66.46 COAP4 Rio Coamo at Coamo PR 18.0833 -66.3544 COMP4 Rio De La Plata at Comerio PR 18.2231 -66.225 CORP4 Rio Cibuco below Corozal PR 18.3536 -66.3333 GSGP4 Rio Guanajibo at San German PR 18.085 -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 -66.07 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 41.09 -71.5664 WOOR1 Blackstone River at Woonsocket RI 42.0061 -71.50361 BBGS1 Broad River near Blacksburg SC 35.12 -81.59 BCRS1 Black Creek (SC) near Quinby SC 34.24 -79.75 BLRS1 Broad River at Blair SC 34.416 -81.4 CEAS1 Congaree River at Carolina Eastman SC 33.876 -81.016 CHAS1 Saluda River at Chappells SC 34.178 -81.861 CHDS1 Savannah River at Thurmond Reservior SC 33.65 -82.2 CHES1 Pee Dee River at Cheraw SC 34.708 -79.875 CMDS1 Wateree River near Camden SC 34.244 -80.655 CNWS1 Waccamaw River near Conway SC 33.83 -79.06 COLS1 Congaree River at Columbia SC 33.993 -81.051 EFFS1 Lynches River at Effingham SC 34.06 -79.76 GALS1 Little Pee Dee River near Galivants Ferry SC 34.06 -79.25 GIVS1 Edisto River near Givhans Ferry SC 33.03 -80.39 GSLS1 Saluda River near Greenville SC 34.84 -82.48 HRTG1 Savannah River at Hartwell SC 34.34 -82.83 JAMS1 Santee River near Jamestown SC 33.3 -79.68 JCSS1 Savannah River at Jocassee Dam SC 34.96 -82.91 KEOS1 Savannah River at Keowee Dam SC 34.71 -82.92 KINS1 Black River at Kingstree SC 33.65 -79.82 MODS1 Stevens Creek near Modoc SC 33.73 -82.18 ORBS1 N. Fork Edisto River at Orangeburg SC 33.489 -80.873 PASS1 Broad River at Parr Shoals SC 34.23 -81.33 PDES1 Pee Dee River at Pee Dee SC 34.2 -79.55 PNVS1 Santee River at Lake Marion SC 33.45 -80.15 RBRS1 Savannah River at R. B. Russell Lake SC 34.03 -82.6 SANS1 Congaree River at Sandy Run SC 33.809 -80.902 WATS1 Wateree River at Wateree Dam SC 34.33 -80.69 WEPS1 Saluda River at West Pelzer SC 34.64 -82.45 WHMS1 Enoree River at Whitmire SC 34.509 -81.598 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 43.475 -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 -103.823 BIGS2 Rapid Creek at Big Bend SD 44.055 -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 44.18 -96.749 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 43.45 -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 43.673 -102.8933 CLGS2 Rapid Creek at Cleghorn Springs SD 44.0588 -103.2969 CMBS2 James River near Columbia SD 45.6036 -98.31 COSS2 Split Rock Creek at Corson SD 43.616 -96.565 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 -103.83 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 43.79 -96.745 DRFS2 Castle Creek at Deerfield Reservoir SD 44.028 -103.7858 DVSS2 Vermillion River near Davis SD 43.237 -96.983 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 43.974 -98.071 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 -103.635 GNKS2 Grizzly Bear Creek near Keystone SD 43.878 -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 -97.22 HATS2 Hat Creek near Edgemont SD 43.24 -103.5877 HAWS2 Rapid Creek below Hawthorn Ditch at Rapid City SD 44.0675 -103.1805 HERS2 Battle Creek at Hermosa SD 43.828 -103.1955 HHDS2 Horsehead Creek at Oelrichs SD 43.188 -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 -96.9 HURS2 James River at Huron SD 44.364 -98.199 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 -103.365 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 43.659 -97.919 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 -101.16 MTVS2 Firesteel Creek near Mt. Vernon SD 43.775 -98.243 NEBS2 White River near Nebraska-South Dakota State Line SD 43.013 -102.8352 OACS2 White River near Oacoma SD 43.7483 -99.5561 OSAS2 Battle Creek below Hermosa SD 43.725 -102.9041 PACS2 Rapid Creek at Pactola Reservoir SD 44.0722 -103.488 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 43.415 -97.205 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 -103.58 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 44.513 -103.1363 SCCS2 Skunk Creek near Chester SD 43.8342 -96.8322 SCOS2 James River near Scotland SD 43.186 -97.635 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 43.601 -96.74 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 43.534 -96.791 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 -97.885 SUNS2 Sunday Gulch near Hill City SD 43.8694 -103.5819 SXFS2 Big Sioux River at Sioux Falls N. Cliff Avenue SD 43.567 -96.711 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 -103.435 VBVS2 Victoria Creek below Victoria Dam nr Rapid City SD 44.018 -103.3838 VERS2 Vermillion River at Vermillion SD 42.817 -96.924 VRPS2 Vermillion River near Parker SD 43.445 -97.109 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 42.991 -96.964 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 42.866 -97.394 ARLT1 Loosahatchie River at Arlington TN 35.31 -89.64 ARTT1 Powell River near Arthur TN 36.55 -83.633 BOGT1 Obion River near Bogota TN 36.14 -89.43 BVRT1 Hatchie River near Bolivar TN 35.27 -88.99 CHAT1 Tennessee River at Chattanooga TN 35.0564 -85.3067 CHKT1 S. Chickamauga Creek near Chickamauga TN 35.014 -85.209 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 -87.46 COLT1 Duck River at Columbia TN 35.6181 -87.0325 CTHT1 Cumberland River at Carthage TN 36.248 -85.9552 DOET1 Doe River at Elizabethton TN 36.344 -82.21 DYET1 North Fork Forked Deer River at Dyersburg TN 36.03 -89.39 EMBT1 Nolichucky River at Embreeville TN 36.176 -82.457 FRAT1 Harpeth River at Franklin TN 35.92 -86.8655 FYTT1 Elk River near Fayetteville TN 35.13 -86.53 GERT1 Wolf River at Germantown TN 35.12 -89.8 HLST1 South Fork Forked Deer River near Halls TN 35.93 -89.39 HMLT1 Duck River near Hurricane Mills TN 35.93 -87.743 IRCT1 Shoal Creek near Iron City TN 35.0241 -87.5788 JKNT1 South Fork Forked Deer River at Jackson TN 35.62 -88.85 JOHT1 Tennessee River near New Johnsonville TN 36.0178 -88.003 KINT1 Harpeth River near Kingston Springs TN 36.1219 -87.0988 KNOT1 Tennessee River at Knoxville TN 35.95 -83.9 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 35.13 -90.07 MUGT1 W. Fk. Stones River above Murfreesboro TN 35.8667 -86.4333 MYVT1 Little River at Maryville TN 35.783 -83.883 NAST1 Cumberland River at Nashville TN 36.1672 -86.7763 NEPT1 Pigeon River at Newport TN 35.93 -83.174 NOMT1 Obion River near Martin TN 36.41 -88.86 NWPT1 French Broad River near Newport TN 35.983 -83.166 OAKT1 Emory River at Oakdale TN 35.983 -84.558 OBNT1 Obion River near Obion TN 36.24 -89.22 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 35.64 -89.6 RVLT1 Big Creek near Rogersville TN 36.433 -82.95 SAVT1 Tennessee River at Savannah TN 35.2247 -88.26 SEVT1 Little Pigeon River above Sevierville TN 35.878 -83.577 SHVT1 Duck River near Shelbyville TN 35.4803 -86.4991 TAZT1 Clinch River above Tazewell TN 36.433 -83.4 TPTT1 Mississippi River at Tiptonville TN 36.34 -89.52 WHTT1 Sequatchie River near Whitwell TN 35.206 -85.496 ABAT2 Hubbard Creek below Albany TX 32.733 -99.14 ABTT2 Barton Creek at Loop 360 TX 30.2444 -97.8019 ABUT2 Bull Creek at Loop 360 near Austin TX 30.3719 -97.785 ABYT2 Clear Fork Brazos River near Fort Griffin TX 32.934 -99.224 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 -97.785 ALOT2 Angelina River near Alto TX 31.6694 -94.9567 AMAT2 Canadian River at Amarillo TX 35.48 -101.87 AMIT2 Rio Grande at Lake Amistad TX 29.47 -101.03 AMTT2 Brazos River at Aspermont 10S TX 33.008 -100.18 ANBT2 Alpine Creek at Alpine TX 30.36 -103.66 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 33.333 -100.238 ASRT2 Nueces River near Asherton TX 28.5 -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 31.749 -99.948 BBST2 Buffalo Bayou at Houston TX 29.76 -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 32.25 -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 -96.205 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 34.628 -100.94 BKBT2 Red River near Burkburnett TX 34.11 -98.531 BKCT2 Devils River at Bakers Crossing near Juno TX 29.9639 -101.144 BKLT2 Sabine River at Toledo Bend Reservoir TX 31.1736 -93.5648 BLET2 Leon River near Belton TX 31.07 -97.4411 BLIT2 Colorado River near Ballinger TX 31.715 -100.026 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 29.19 -102.96 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 33.622 -100.209 BRAT2 Brady Creek at Brady TX 31.138 -99.335 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 32.25 -101.49 BSNT2 Big Sandy Creek near Big Sandy TX 32.6039 -95.0914 BSST2 San Saba River near Brady TX 31.004 -99.269 BTVT2 Nueces River at Bracketville TX 29.4725 -100.236 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 31.732 -98.974 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 -96.95 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 32.4 -100.84 CCVT2 Coleto Creek at Highway 59 TX 28.7308 -97.1383 CDCT2 Colorado River at Colorado City TX 32.39 -100.89 CDET2 Rio Grande at Candelaria TX 30.18 -104.69 CDNT2 Canadian River at Canadian TX 35.93 -100.37 CDPT2 Pease River at Childress 17SE TX 34.228 -100.073 CFKT2 West Fork San Jacinto River near Conroe TX 30.2444 -95.4569 CHLT2 Prairie Dog Town Fork Red River at Childress 10N TX 34.569 -100.194 CHOT2 Frio River at Choke Canyon Dam TX 28.4667 -98.25 CHVT2 South Concho River at Christoval TX 31.187 -100.502 CKDT2 Coleto Creek at Coleto Creek Reservoir TX 28.7308 -97.1647 CLBT2 North Concho River near Carlsbad TX 31.593 -100.637 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 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 -96.485 CODT2 Sandy Creek near Cordele TX 29.16 -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 31.6 -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 29.14 -103.52 CTNT2 North Bosque River near Clifton TX 31.7858 -97.5677 CUET2 Guadalupe River at Cuero TX 29.09 -97.3292 CUST2 East Fork Angelina River near Cushing TX 31.86 -94.8231 CUTT2 Pecan Bayou near Cross Cutt TX 31.973 -99.13 CUZT2 Guadalupe River near Cuero TX 29.09 -97.2392 CWRT2 Running Water Draw-White River at White River Lake TX 33.456 -101.093 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 32.57 -100.91 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 -100.931 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 DWYT2 Sabine River at Deweyville TX 30.3036 -93.7436 DYNT2 Rio Grande at Dryden TX 29.81 -102.15 EAMT2 North Texas Lakes at Eagle Mountain Lake TX 32.8775 -97.4747 EAST2 Navasota River near Easterly TX 31.17 -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 28.35 -100.32 ELTT2 Beaver Creek near Electra TX 33.906 -98.922 EPPT2 Rio Grande at Eagle Pass TX 28.7139 -100.507 EPRT2 Rio Grande near El Paso TX 31.803 -106.54 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 -99.17 FCTT2 Cibolo Creek near Falls City TX 29.0139 -97.93 FFLT2 North Texas Lakes at Richland-Chambers Lake TX 32.0403 -96.2064 FLWT2 North Texas Lakes at Lake Worth TX 32.82 -97.47 FQGT2 Rio Grande near Fort Quitman TX 31.086 -105.608 FRBT2 Pedernales River at Fredericksburg TX 30.2203 -98.8694 FRHT2 North Texas Lakes at Lake Ray Hubbard TX 32.8 -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 -94.96 GEOT2 San Gabriel River at Georgetown TX 30.53 -97.65 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 31.11 -102.42 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 -97.6 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 -96.995 GPVT2 North Texas Lakes at Lake Grapevine TX 32.9725 -97.0561 GRET2 Salt Fork of the Red River at Greenbelt Lake TX 34.99 -100.89 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 28.059444 -98.096667 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 29.7 -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 29.45 -102.83 HFFT2 Luce Bayou near Huffman TX 30.1094 -95.0597 HGTT2 White Oak Bayou at Houston TX 29.7833 -95.4 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 34.94 -100.7 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 32.598 -99.815 IKLT2 Colorado River at Inks Lake TX 30.7317 -98.3853 IRAT2 Colorado River at Ira TX 32.54 -101.05 JAKT2 West Fork Trinity River near Jacksboro TX 33.2933 -98.0786 JCIT2 Johnson Creek above Ingram TX 30.1 -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 30.504 -99.734 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 31.06 -94.1067 JTBT2 Brazos River at Justiceburg TX 33.038 -101.197 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 31.274 -100.631 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 35.48 -100.12 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 29.27 -103.78 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 36.24 -100.28 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 33.064 -101.049 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 31.325 -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 -101.446 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 -95.01 LVNT2 North Texas Lakes at Lake Lavon TX 33.0317 -96.4822 LYNT2 Davidson Creek near Lyons TX 30.4194 -96.54 MADT2 Rio Grande at Anzalduas Reservior TX 26.1306 -98.3361 MBCT2 Beaver Creek near Mason TX 30.643 -99.096 MBFT2 Trinity River near Moss Bluff TX 29.9417 -94.7742 MCDT2 Rio Grande at Mercedes TX 26.0667 -97.9 MCET2 McClellan Creek at McLean TX 35.33 -100.61 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 29.51 -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 34.545 -101.438 MLAT2 Sabine River near Mineola TX 32.6136 -95.4856 MLIT2 Pecan Bayou near Mullin TX 31.517 -98.74 MLRT2 Llano River near Mason TX 30.661 -99.109 MNRT2 San Saba River at Menard TX 30.919 -99.785 MRAT2 Navidad River near Morales TX 29.1356 -96.7442 MRIT2 Canadian River at Lake Meredith TX 35.71 -101.55 MSDT2 Colorado River at Lake Travis TX 30.3911 -97.9067 MTBT2 Nueces River at Mathis TX 28.0372 -97.86 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 32.69 -99.669 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 -93.73194 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 30.13 -101.57 PEDT2 Perdido Creek near Fannin TX 28.751389 -97.315944 PICT2 Cowhouse Creek near Pidcoke TX 31.2847 -97.8847 PIOT2 Rio Grande near Rio Grande 7NW Presidio TX 29.6 -104.45 PLOT2 Brazos River near Palo Pinto TX 32.8625 -98.3022 PLXT2 Rio Grande at Pipeline Crossing TX 27.400278 -99.488333 PNTT2 North Texas Lakes at Lake Tawakoni TX 32.8086 -95.9194 PNVT2 Running Water Draw-White River at Plainview TX 34.179 -101.702 PPTT2 Buffalo Bayou at Piney Point Village TX 29.7467 -95.5233 PRDT2 Rio Grande near Rio Grande 5SE Presidio TX 29.52 -104.29 PRKT2 Concho River at Paint Rock TX 31.516 -99.919 PRST2 Rio Grande at Presidio Bridge TX 29.58 -104.43 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 33.951 -100.064 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 -96.52 REFT2 Mission River at Refugio TX 28.2917 -97.2789 RELT2 Colorado River at Robert Lee TX 31.885 -100.48 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 30.425 -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 32.788 -100.388 RRLT2 North Texas Lakes at Lake Ray Roberts TX 33.3553 -97.0497 RSAT2 San Gabriel River near Rockdale TX 30.69 -97.09 RSRT2 Trinity River near Rosser TX 32.4264 -96.4628 RVRT2 Trinity River at Riverside TX 30.86 -95.4 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 31.454 -100.41 SCDT2 Coleto Creek at Arnold Road Crossing TX 28.8614 -97.2261 SCLT2 North Texas Lakes at Jim Chapman Lake TX 33.3333 -95.625 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 32.71 -100.91 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 30.45 -101.73 SGET2 Clear Creek near Sanger TX 33.3392 -97.1792 SGOT2 Pecan Creek near San Angelo TX 31.309 -100.446 SHAT2 North Fork of the Red River at Shamrock TX 35.27 -100.24 SHLT2 San Jacinto River near Sheldon TX 29.8761 -95.0936 SILT2 Colorado River above Silver TX 32.054 -100.762 SIOT2 Olmos Creek at Dresden Drive TX 29.4989 -98.51 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 31.218 -98.564 SNCT2 North Concho River at San Angelo TX 31.466 -100.448 SNPT2 San Antonio River at Loop 410 at San Antonio TX 29.322 -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 30.67 -101.77 SPDT2 Peach Creek near Splendora TX 30.2325 -95.1681 SPMT2 Palo Duro Creek at Spearman TX 36.2 -101.31 SPNT2 Spring Creek near Spring TX 30.1103 -95.4361 SPRT2 Palo Duro Creek at Palo Duro Reservoir TX 36.39 -101.16 SRCT2 North Concho River at Sterling City TX 31.83 -100.993 SRGT2 Guadalupe River near Spring Branch TX 29.8603 -98.3833 SSBT2 San Saba River at San Saba TX 31.213 -98.719 SSCT2 Salado Creek at NE Loop 410 TX 29.5167 -98.4333 STFT2 California Creek near Stamford TX 32.931 -99.642 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 31.494 -99.574 SWYT2 San Bernard River near Sweeny TX 29.0833 -95.6833 SYDT2 Deep Creek at Snyder TX 32.72 -100.92 SYMT2 Brazos River at Seymour TX 33.581 -99.267 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 29.03 -103.39 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 31.33 -100.64 TKST2 Middle Concho River above Tankersley TX 31.427 -100.711 TLCT2 Sulphur River near Talco TX 33.3906 -95.0622 TLPT2 Middle Wichita River at Guthrie 19NE TX 33.808 -100.043 TNGT2 Terlingua Creek near Terlingua Creek 7S Terlingua TX 29.2 -103.62 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 34.179 -99.278 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 34.84 -101.42 WBAT2 Brazos River at Waco TX 31.5358 -97.0731 WBRT2 Beals Creek near Beals Creek 11S Westbrook TX 32.2 -101.01 WCBT2 Brazos River near West Columbia TX 29.1108 -95.6056 WCHT2 Colorado River at Winchell TX 31.468 -99.162 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 29.215 -97.4492 WICT2 Wichita River at Wichita Falls TX 33.909 -98.533 WLGT2 Salt Fork of the Red River at Wellington TX 34.96 -100.22 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 -97.354722 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 -110.854 BFFU1 San Juan River near Bluff UT 37.147 -109.864 CIVU1 Chalk Creek near Coalville UT 40.9207 -111.4 CLRU1 Colorado River near Cisco UT 38.8106 -109.2928 DCHU1 Strawberry River near Duchesne UT 40.1547 -110.554 DURU1 Duchesne River near Randlett UT 40.216 -109.783 ECCU1 East Canyon Creek near Morgan UT 40.9226 -111.606 GRZU1 Green River near Greendale UT 40.9083 -109.422 HATU1 Sevier River near Hatch UT 37.6514 -112.431 HRMU1 Blacksmith Fork River near Hyrum UT 41.6236 -111.732 HURU1 Virgin River near Hurricane UT 37.2042 -113.18 JESU1 Green River at Jensen UT 40.409 -109.235 LGNU1 Logan River near Logan UT 41.7437 -111.786 NFVU1 North Fork Virgin River near Springdale UT 37.2097 -112.977 OAWU1 Weber River near Oakley UT 40.737 -111.247 OPDU1 Ogden River below Pineview Reservoir UT 41.2445 -111.855 PAKU1 Paria River near Kanab UT 37.1035 -111.905 PCVU1 Paria River near Cannonville UT 37.4801 -112.481 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 -113.592 STCU1 Santa Clara River near Pine Valley UT 37.3833 -113.483 VIRU1 Virgin River near Virgin UT 37.2043 -113.18 VLTA3 Virgin River at Littlefield UT 36.8916 -113.924 WOOU1 Provo River near Woodland UT 40.579 -111.168 WTRU1 Whiterocks River near Whiterocks UT 40.5869 -109.9269 ALTV2 Roanoke River at Altavista VA 37.11 -79.28 BECV2 James River at Bent Creek VA 37.536 -78.829 BNNV2 James River at Buchanan VA 37.531 -79.679 BREV2 James River at Bremo Bluff VA 37.711 -78.302 BROV2 Roanoke River at Brookneal VA 37.04 -78.95 BUVV2 Maury River near Buena Vista VA 37.75 -79.38 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 36.95 -82.15 COOV2 North Fork Shenandoah River at Cootes Store VA 38.6369 -78.8531 CVGV2 Jackson River at Covington VA 37.789 -80.001 DMCV2 Laurel Creek near Damascus VA 36.633 -81.766 DVLV2 Dan River at Danville VA 36.56 -79.37 EPOV2 Meherrin River at Emporia VA 36.6901 -77.5405 FDBV2 Rappahannock River above Fredericksburg VA 38.316 -77.526 FEDV2 Rappahannock River at Fredericksburg City Dock VA 38.3 -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 36.65 -80.98 GDMV2 Jackson River at Gathright Dam VA 37.95 -79.95 GLLV2 New River at Glen Lyn VA 37.37 -80.86 GRYV2 New River at Graysonton VA 37.0375 -80.5569 HAIV2 Russell Fork River at Haysi VA 37.2 -82.28 HRKV2 James River at Holcomb Rock VA 37.501 -79.263 JNSV2 Powell River near Jonesville VA 36.666 -83.1 KERV2 Roanoke River at John Kerr Dam VA 36.6 -78.28 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 37.774 -79.784 LNBV2 North Meherrin River near Lunenburg VA 36.9975 -78.3497 LYWV2 South Fork Shenandoah River near Lynnwood VA 38.3225 -78.755 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 36.64 -79.09 PTTV2 Smith River at Philpott Dam VA 36.78 -80.03 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 37.15 -80.57 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 37.086 -81.781 RMDV2 James River at Richmond-Westham VA 37.5631 -77.5472 RNDV2 Roanoke River at Randolph VA 36.92 -78.74 RONV2 Roanoke River at Roanoke VA 37.26 -79.94 SALV2 North Fork Holston River at Saltville VA 36.9 -81.75 SBNV2 Dan River at South Boston VA 36.69 -78.9 SEBV2 Nottoway River near Sebrell VA 36.7704 -77.1661 SFYV2 Clinch River near Speers Ferry VA 36.643 -82.75 SMIV2 Roanoke River at Smith Mountain Lake VA 37.02 -79.53 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 37.797 -78.491 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 18.332 -64.8889 ARLV1 Battenkill at Arlington VT 43.0833 -73.15 BNTV1 Hoosic River at Walloomsac River near North Bennington VT 42.92 -73.22 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 44.37 -72.03 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 43.05 -72.6997 UNVV1 Ompompanoosuc River at Union Village Dam VT 43.79 -72.2553 WATV1 Winooski River at Waterbury VT 44.3284 -72.747 WEHV1 White River at West Hartford VT 43.717 -72.417 WELV1 Connecticut River at Wells River VT 44.15 -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 48.18 -117.03 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 -122.128 AUBW1 Green River near Auburn WA 47.3125 -122.203 BCDW1 Skookumchuck River near Bucoda WA 46.7722 -122.923 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 46.274 -122.912 CENW1 Chehalis River at Centralia WA 46.7117 -122.978 CGMW1 Chehalis River near Grand Mound WA 46.7761 -123.034 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 -119.65 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 47.25 -121.0667 CLFW1 Naches River near Cliffdell WA 46.91 -121.02 CONW1 Skagit River near Concrete WA 48.5244 -121.77 CRBW1 Crab Creek at Irby WA 47.3605 -118.8488 CRNW1 Snoqualmie River near Carnation WA 47.6661 -121.924 CRPW1 Chehalis River at Porter WA 46.9381 -123.312 CTAW1 Skookumchuck River at Centralia WA 46.7311 -122.953 DEMW1 Nooksack River at Deming WA 48.8106 -122.204 DOTW1 Chehalis River near Doty WA 46.6175 -123.2764 DRSW1 Dungeness River near Sequim WA 48.0144 -123.131 DSRW1 Deschutes River near Rainier WA 46.8522 -122.668 EASW1 Yakima River at Easton WA 47.2389 -121.1778 ELWW1 Elwha River at Elwha R WA 48.055 -123.582 ENRW1 Entiat River near Entiat WA 47.6633 -120.2494 FFXW1 Carbon River near Fairfax WA 47.0278 -122.031 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 -121.666 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 -122.047 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 46.143 -122.916 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 -121.953 LNRW1 Little Naches River near Nile WA 46.9875 -121.0986 LOPW1 Columbia River at Longview WA 46.123 -122.954 LRWW1 Lewis River at Woodland WA 45.906 -122.738 LSDW1 Little Spokane River at Dartford WA 47.7847 -117.4033 MAYW1 Cowlitz River below Mayfield Dam WA 46.5106 -122.615 MERW1 Lewis River at Ariel WA 45.9506 -122.5642 MKNW1 Nisqually River at McKenna WA 46.9336 -122.56 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 -121.949 MMRW1 Mud Mountain Lake near Buckley WA 47.1408 -121.93 MNSW1 Wynoochee River near Montesano WA 47.0117 -123.654 MONW1 Wenatchee River at Monitor WA 47.4994 -120.4233 MROW1 Snohomish River near Monroe WA 47.8311 -122.047 MSLW1 Crab Creek near Moses Lake WA 47.1894 -119.2647 MVEW1 Skagit River near Mt Vernon WA 48.445 -122.334 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 46.374 -123.742 NEWW1 Newaukum River near Chehalis WA 46.62 -122.9447 NISW1 Nisqually River near National WA 46.7528 -122.082 NITW1 Similkameen River near Nighthawk WA 48.9847 -119.6172 NKSW1 Nooksack River at Ferndale WA 48.845 -122.588 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 -122.207 PACW1 Cowlitz River at Packwood WA 46.6131 -121.678 PARW1 Yakima River near Parker WA 46.5 -120.45 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 46.73 -117.1825 PUYW1 Puyallup River at Puyallup WA 47.2086 -122.326 RAWW1 Cowlitz River at Randle WA 46.5325 -121.956 RISW1 Columbia River at Rock Island Dam WA 47.3325 -120.08 RNTW1 Cedar River at Renton WA 47.4828 -122.202 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 -123.494 SNAW1 Snohomish River at Snohomish WA 47.9106 -122.098 SPOW1 Spokane River at Spokane WA 47.6594 -117.4481 SQUW1 Snoqualmie River at Snoqualmie Falls WA 47.5453 -121.841 SRPW1 Skokomish River near Potlatch WA 47.31 -123.176 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 TNAW1 Teanaway River near Cle Elum WA 47.2464 -120.8611 TOLW1 Tolt River near Carnation WA 47.6958 -121.823 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 48.37 -120.1475 UMTW1 Yakima River at Umtanum WA 46.8628 -120.4789 VANW1 Columbia River at Vancouver WA 45.621 -122.672 WCHW1 Sauk River above White Chuck R WA 48.1667 -121.4667 WELW1 Columbia River at Wells Dam WA 47.95 -119.87 WILW1 Willipa River at Willapa WA 46.651 -123.651 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 47.763 -120.665 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 42.609 -89.071 ALBW3 Sugar River at Albany WI 42.706 -89.438 ALMW3 Mississippi River at Alma WI 44.325 -91.923 AMBW3 Pike River at Amberg WI 45.5 -88 APLW3 Fox River at Appleton WI 44.25 -88.37 ATHW3 Peshtigo River near Athelstane WI 45.4 -88.31 BABW3 Baraboo River near Baraboo WI 43.481 -89.636 BBCW3 Yellow River at Babcock WI 44.301 -90.121 BBOW3 Baraboo River at West Baraboo WI 43.471 -89.759 BCHW3 Pecatonica River near Blanchardville WI 42.786 -89.861 BEAW3 Beaverdam River at Beaver Dam WI 43.449 -88.839 BERW3 Fox River at Berlin WI 43.954 -88.952 BLEW3 Black Earth Creek at Black Earth WI 43.134 -89.732 BRFW3 Black River at Black River Falls WI 44.294 -90.846 BRGW3 Fox River at Burlington WI 42.68 -88.272 BRKW3 Pine River near Florence WI 45.84 -88.23 BROW3 Sugar River at Brodhead WI 42.612 -89.398 BTNW3 Grant River at Burton WI 42.72 -90.819 BUNW3 Galena River at Buncombe WI 42.514 -90.378 CDRW3 Cedar Creek at Cedarburg WI 43.323 -87.979 CEDW3 Milwaukee River near Cedarburg WI 43.28 -87.942 CLIW3 Turtle Creek near Clinton WI 42.597 -88.829 COMW3 Brule River near Commonwealth WI 45.95 -88.262 DARW3 Pecatonica River at Darlington WI 42.678 -90.119 DDGW3 Trempealeau River at Dodge WI 44.132 -91.554 DURW3 Chippewa River at Durand WI 44.628 -91.969 ECLW3 Chippewa River at Eau Claire WI 44.811 -91.498 EMBW3 Embarrass River near Embarrass WI 44.72 -88.74 FATW3 Rock River at Fort Atkinson WI 42.928 -88.843 FCEW3 Popple River at Fence WI 45.76 -88.47 FLCW3 Eau Claire River near Fall Creek WI 44.7636 -91.2769 FLOW3 Menominee River near Florence WI 45.952 -88.184 FLRW3 Brule River near Florence 4 NW WI 46 -88.35 FRKW3 Root River at Franklin WI 42.874 -87.996 FULW3 Yahara River at Fulton WI 42.826 -89.172 GALW3 Black River at Galesville WI 44.073 -91.295 GBYW3 Fox River at Green Bay WI 44.53 -88.01 GILW3 Oconto River near Gillett WI 44.86 -88.3 GMIW3 Kickapoo River at Gays Mills WI 43.318 -90.845 HAYW3 Manitowoc River at Hayton WI 44.02 -88.12 HCNW3 Rock River at Horicon WI 43.446 -88.631 HILW3 South Branch Baraboo at Hillsboro WI 43.667 -90.3333 HOWW3 Duck Creek at Howard WI 44.53 -88.13 INFW3 Rock River at Indianford Dam WI 42.804 -89.09 JFFW3 Rock River at Jefferson WI 42.996 -88.807 KELW3 Eau Claire River at Kelly WI 44.92 -89.55 KEWW3 Kewaunee River near Kewaunee WI 44.45 -87.56 LACW3 Mississippi River at La Crosse WI 43.813 -91.257 LAFW3 Kickapoo River at La Farge WI 43.574 -90.643 LAVW3 Baraboo River at La Valle WI 43.583 -90.132 LGLW3 Wolf River at Langlade WI 45.19 -88.74 LODW3 Spring Creek at Lodi WI 43.3217 -89.5311 LTKW3 Wisconsin River at Rainbow Reservoir WI 45.83 -89.55 MAZW3 Black Earth Creek at Mazomanie WI 43.171 -89.82 MCAW3 Menominee River near Mcallister WI 45.324 -87.662 MEEW3 Milwaukee River at Milwaukee WI 43.1 -87.909 MFSW3 Menomonee River at Menomonee Falls WI 43.173 -88.104 MILW3 Crawfish River at Milford WI 43.1 -88.849 MORW3 Red River near Gresham WI 44.9 -88.84 MRLW3 Prairie River near Merrill WI 45.23 -89.65 MTNW3 Pecatonica River at Martintown WI 42.509 -89.799 MTWW3 Manitowoc River at Manitowoc WI 44.1 -87.72 MUKW3 Mukwonago River at Mukwonago WI 42.857 -88.328 MUSW3 Wisconsin River at Muscoda WI 43.198 -90.441 NEIW3 Black River at Neillsville WI 44.559 -90.614 NEWW3 Wolf River at Wolf River in New London WI 44.392 -88.74 NIAW3 Menominee River at Niagara WI 45.768 -87.98 NMSW3 Fox River at New Munster WI 42.611 -88.226 NVLW3 Rock River near Newville WI 42.858 -88.941 OAKW3 Oak Creek at South Milwaukee WI 42.925 -87.87 OCTW3 Oconto River near Oconto WI 44.86 -87.99 ONTW3 Kickapoo River at Ontario WI 43.722 -90.588 OSKW3 Fox River at Menasha-Fritse Park WI 44.2 -88.47 OSSW3 Fox River at Oshkosh WI 44.01 -88.54 PBIW3 Menominee River near Pembine WI 45.58 -87.79 PESW3 Peshtigo River at Peshtigo WI 45.05 -87.74 PFDW3 Peshtigo River near Porterfield WI 45.13 -87.807 PORW3 Wisconsin River at Portage WI 43.539 -89.463 RACW3 Root River at Racine WI 42.751 -87.824 RAYW3 Root River Canal near Raymond WI 42.815 -87.997 REAW3 Kickapoo River at Readstown WI 43.449444 -90.764722 ROMW3 Bark River at Rome WI 42.96 -88.671 ROTW3 Wisconsin River at Rothschild WI 44.886 -89.635 ROYW3 Little Wolf River at Royalton WI 44.413 -88.865 RRLW3 Wisconsin River at Merrill WI 45.178 -89.681 RSPW3 Baraboo River at Rock Springs WI 43.478 -89.916 RVLW3 Platte River at Rockville WI 42.731 -90.64 SEBW3 Sheboygan River at Sheboygan WI 43.742 -87.754 SHAW3 Wolf River near Shawano WI 44.83 -88.63 SHIW3 Wolf River at Shiocton WI 44.44 -88.58 SOGW3 Kickapoo River at Soldiers Grove WI 43.395 -90.774 STEW3 Kickapoo River at Steuben WI 43.183 -90.858 STRW3 Big Eau Pleine River near Stratford WI 44.82 -90.09 TRIW3 Spirit River near Spirit Falls WI 45.45 -89.99 VIOW3 Kickapoo River at Viola WI 43.506 -90.675 WATW3 Rock River at Watertown WI 43.188 -88.726 WAUW3 Milwaukee River at Waubeka WI 43.473 -87.99 WDEW3 Wisconsin River at Wisconsin Dells WI 43.606 -89.757 WIRW3 Wisconsin River at Wisconsin Rapids WI 44.395 -89.825 WITW3 Embarrass River near Wittenberg WI 44.82 -89.12 WKEW3 Fox River at Waukesha WI 43.005 -88.244 WPCW3 Waupaca River near Waupaca WI 44.329 -88.996 WPNW3 Rock River at Waupun WI 43.642 -88.721 WWTW3 Menomonee River at Wauwatosa WI 43.046 -88 ALDW2 Greenbrier River at Alderson WV 37.71 -80.65 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 39.44 -79.11 BOWW2 Shavers Fork Cheat River at Bowden WV 38.9132 -79.7703 BRAW2 Guyandotte River at Branchland WV 38.21 -82.2 BRSW2 Dry Fork River at Bradshaw WV 37.3955 -81.8023 BUCW2 Greenbrier River at Buckeye WV 38.18 -80.13 BVAW2 Gauley River at Belva WV 38.2333 -81.1792 CFXW2 Tygart Valley River at Colfax WV 39.435 -80.1327 CHBW2 Cheat River at Cheat Bridge WV 38.61 -79.88 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 38.35 -81.63 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 38.91 -81.1 HFEW2 Potomac River at Harpers Ferry WV 39.3239 -77.7278 HINW2 New River at Hinton WV 37.67 -80.88 HNTW2 Ohio River at Huntington WV 38.4167 -82.5 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 37.48 -81.85 LOGW2 Guyandotte River at Logan WV 37.85 -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 37.74 -81.88 MOFW2 South Fork South Branch Potomac River near Moorefield WV 39.0122 -78.9564 MORW2 Monongahela River at Morgantown L&D WV 39.62 -79.97 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 39.15 -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 39.103 -79.6658 QUSW2 Elk River at Queen Shoals WV 38.4722 -81.2861 RACW2 Ohio River at Racine Lock WV 38.92 -81.92 RNKW2 Greenbrier River at Renick WV 37.98 -80.36 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 39.03 -80.47 ARVW4 Powder River near Arvada WY 44.65 -106.126 BBRW4 South Fork Shoshone River above Buffalo Bill Reservoir WY 44.419 -109.257 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 41.555 -105.683 BPNW4 New Fork River near Big Piney WY 42.5672 -109.925 BSRW4 Big Sandy River above Big Sandy Reservoir WY 42.317 -109.485 CDYW4 Shoshone River at Buffalo BIll Reservoir WY 44.5014 -109.1833 CMPW4 Beaver Creek (WY) near Four Corners WY 44.085 -104.06 CPRW4 North Platte River at Casper WY 42.857 -106.319 DONW4 Donkey Creek near Gillette WY 44.2666 -105.438 DUBW4 Wind River near Dubois WY 43.759 -109.759 EVAW4 Bear River near Evanston WY 41.2703 -110.9631 FLAW4 Laramie River near Fort Laramie WY 42.201 -104.538 FRAW4 Pine Creek above Fremont Lake WY 43.0306 -109.7694 GBFW4 Green River below Fontenelle Dam WY 42.1 -110.049 GLNW4 North Platte River near Glenrock WY 42.836 -105.769 GRRW4 Green River at Green River WY 41.516 -109.448 GYBW4 Big Horn River at Greybull WY 44.483 -108.049 HANW4 Medicine Bow River near Hanna WY 42.01 -106.513 HMFW4 Hams Fork above Viva Naughton Reservoir WY 42.111 -110.709 HRNW4 Cold Springs Creek at Buckhorn WY 44.1538 -104.0775 JKSW4 Snake River near Jackson WY 43.372 -110.738 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 42.193 -110.162 LANW4 Middle Fork Popo Agie River near Lander WY 42.7572 -108.7978 LLRW4 Laramie River at Laramie WY 41.328 -105.607 LPTW4 Little Powder River near Weston WY 44.9269 -105.3527 LTAW4 Blacks Fork near Little America WY 41.546 -109.693 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 42.653 -105.159 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 42.94 -108.35 SALW4 Salt River near Etna WY 43.08 -111.037 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 41.455 -106.804 STNW4 Stonepile Creek near Gillette WY 44.2677 -105.438 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 43.02 -108.3761 WODW4 Laramie River at Woods Landing WY 41.138 -105.98 WRCW4 Wind River above Red Creek WY 43.44 -109.458 YLOW4 Yellowstone River at Fishing Bridge WY 44.5675 -110.38