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Assessment Data for
California, Mad-Redwood Watershed (8 Digit USGS Cataloging Unit), Year 2004

Description of this table
For a report glossary please click here.

Click on the Water Name link to get 305(b) Lists/Assessment Unit Information Report

Table Legend: Water Status is GoodWater Status is Threatened Water Status is ImpairedWater Status has not been Assessed

Water Name Assessment Unit ID Location Map State Water Type Water Size Unit Water Status
Arcata Bay (eastern mud flat) CAB1100005220030303152345_00 HUC: 18010102 Map Assessed Water CA BAY(S) & HARBOR 4.364062 SQUARE MILES IMPAIRED
Beith Creek CAR1100005220020618162935_00 HUC: 18010102 No Mapping Data CA RIVER .374259 MILES NOT ASSESSED
Elk River, Eureka Plain HU CAR1100004219980707112307_00 HUMBOLDT CO Map Assessed Water CA RIVER 88.4876 MILES IMPAIRED
Eureka Plain HU, Eureka Slough CAR1100005019990617095802_00 HUMBOLDT CO Map Assessed Water CA RIVER 1.77616 MILES NOT ASSESSED
Eureka Plain HU, Gannon Slough CAR1100005219990617095337_00 HUMBOLDT CO Map Assessed Water CA RIVER 2.66767 MILES NOT ASSESSED
Eureka Plain HU, Jolly Giant Creek CAR1100005119990617151229_00 HUMBOLDT CO Map Assessed Water CA RIVER 1.41884 MILES NOT ASSESSED
Eureka Plain HU, Liscom Slough CAR1100005219990617094306_00 HUMBOLDT CO Map Assessed Water CA RIVER 3.44914 MILES NOT ASSESSED
Eureka Plain HU, Mcdaniel Slough CAR1100005219990617094056_00 HUMBOLDT CO Map Assessed Water CA RIVER 5.88832 MILES NOT ASSESSED
Eureka Plain HU, Willow Brook CAR1100005519990617151437_00 HUMBOLDT CO Map Assessed Water CA RIVER 1.14472 MILES NOT ASSESSED
Freshwater Creek, Eureka Plain HU CAR1100005019980707102630_00 HUC: 18010105 Map Assessed Water CA RIVER 83.7598 MILES IMPAIRED
Grotzman Creek CAR1100005220020603172951_00 HUC: 18010102 No Mapping Data CA RIVER .773483 MILES NOT ASSESSED
Humboldt Bay, Eureka Plain HU CAB1100000020020108173626_00 HUC: 18010105 Map Assessed Water CA BAY(S) & HARBOR 25.117187 SQUARE MILES IMPAIRED
Jacoby Creek, Eureka Plain HU CAR1100001319990617093415_00 HUC: 18010102 Map Assessed Water CA RIVER 18.94 MILES IMPAIRED
KELP BEDS TRINIDAD ASBS CAO108.100KELP_BEDS_TRINI_00 HUC: 18010102 No Mapping Data CA OCEAN .546875 SQUARE MILES GOOD
Klamath River, Klamath River HU, Lower HA, Klamath Glen HSA CAR1051108619990608084033_00 HUC: 18010102 Map Assessed Water CA RIVER 609.044 MILES IMPAIRED
Mad River HU, Mad River Estuary CAR1091001119990617100327_00 HUMBOLDT CO Map Assessed Water CA RIVER 2.96919 MILES NOT ASSESSED
Mad River HU, Norton Creek CAR1091002019990617100545_00 HUMBOLDT CO Map Assessed Water CA RIVER 6.36048 MILES NOT ASSESSED
Mad River HU, Strawberry Creek CAR1091003019990617101737_00 HUMBOLDT CO Map Assessed Water CA RIVER 7.03376 MILES NOT ASSESSED
Mad River Slough, Eureka Plain HU CAR1100005219990617094843_00 HUMBOLDT CO Map Assessed Water CA RIVER 11.2247 MILES NOT ASSESSED
Mad River, Mad River HU CAR1091001119980706155140_00 HUC: 18010104 Map Assessed Water CA RIVER 654.276 MILES IMPAIRED
PYGMY FOREST ASBS CAO108.100PYGMY_FOREST_AS_00 HUC: 18010102 No Mapping Data CA OCEAN .25 SQUARE MILES GOOD
REDWOOD NATIONAL PARK ASBS CAO117.100REDWOOD_NATIONA_00 HUC: 18010102 No Mapping Data CA OCEAN 62.5 SQUARE MILES GOOD
Redwood Creek HU, Orick HA, Boat Creek CAR1071002219990617150336_00 HUC: 18010102 Map Assessed Water CA RIVER 1.62 MILES NOT ASSESSED
Redwood Creek HU, Orick HA, Ossagon Creek CAR1071002219990617150126_00 HUC: 18010102 Map Assessed Water CA RIVER 1.47 MILES NOT ASSESSED
Redwood Creek HU, Orick HA, Squashan Creek CAR1071002219990617150541_00 HUC: 18010102 Map Assessed Water CA RIVER 2.37 MILES NOT ASSESSED
Redwood Creek, Redwood Creek HU CAR1071002019990528100152_00 HUC: 18010102 Map Assessed Water CA RIVER 331.529 MILES IMPAIRED
Ruth Lake CAL1094003020020720144550_00 HUC: 18010102 Map Assessed Water CA FRESHWATER LAKE 1073.7 ACRES IMPAIRED
Trinidad HU, Beach Creek CAR1081001219990617113431_00 HUMBOLDT CO Map Assessed Water CA RIVER 1.24533 MILES NOT ASSESSED
Trinidad HU, Little River HA CAR1082001219990617111952_00 HUMBOLDT CO Map Assessed Water CA RIVER 52.5063 MILES NOT ASSESSED
Trinidad HU, Luffenholtz Creek CAR1081001219990617112546_00 HUMBOLDT CO Map Assessed Water CA RIVER 8.42878 MILES NOT ASSESSED
Trinidad HU, Maple Creek/Pitcher Creek watershed CAR1081001119990617114654_00 HUC: 18010102 Map Assessed Water CA RIVER 66.97 MILES NOT ASSESSED
Trinidad HU, Mcconnahas Mill Creek CAR1081001219990617112850_00 HUMBOLDT CO Map Assessed Water CA RIVER 1.70884 MILES NOT ASSESSED
Trinidad HU, Mcdonald Creek CAR1081001219990617113218_00 HUMBOLDT CO Map Assessed Water CA RIVER 3.70793 MILES NOT ASSESSED
Trinidad HU, Mill Creek CAR1081001219990617113036_00 HUMBOLDT CO Map Assessed Water CA RIVER 3.11294 MILES NOT ASSESSED
Trinidad HU, Patrick Creek CAR1082001220011228160303_00 HUC: 18010102 Map Assessed Water CA RIVER 1.29031 MILES NOT ASSESSED
Trinidad HU, Penn Creek CAR1081001219990617113559_00 HUMBOLDT CO Map Assessed Water CA RIVER 1.58422 MILES NOT ASSESSED
Trinidad HU, Tom Creek CAR1081001219990617115013_00 HUMBOLDT CO Map Assessed Water CA RIVER 2.22579 MILES NOT ASSESSED
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Assessing Water Quality (Questions and Answers)

The 2004 National Assessment
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State Causes of Impairment

California, Mad-Redwood Watershed

Description of this table
State Cause Name Size of Assessed Waters with Listed Causes of Impairment
Rivers, Streams, Creeks (Miles) Lakes, Ponds, Reservoir (Acres) Bays, Estuaries (Square Miles) Coastal Shorelines (Miles) Oceans, Near Coastal Waters (Square Miles) Wetlands (Acres) Great Lakes Shoreline (Miles) Great Lakes Open Waters (Square Miles) Inland Lake Shoreline (Miles)
FILLING AND DRAINING 18.94 .00 25.12 .00 .00 .00 .00 .00 .00
FLOW ALTERATION 627.98 .00 .00 .00 .00 .00 .00 .00 .00
HABITAT ALTERATIONS 627.98 .00 .00 .00 .00 .00 .00 .00 .00
METALS .00 .00 25.12 .00 .00 .00 .00 .00 .00
NONPRIORITY ORGANICS .00 1,073.70 .00 .00 .00 .00 .00 .00 .00
NUTRIENTS 609.04 .00 .00 .00 .00 .00 .00 .00 .00
ORGANIC ENRICHMENT/LOW DO 609.04 .00 .00 .00 .00 .00 .00 .00 .00
PATHOGENS/PATH.INDICATORS .00 .00 29.48 .00 .00 .00 .00 .00 .00
PESTICIDES .00 .00 25.12 .00 .00 .00 .00 .00 .00
PRIORITY ORGANICS .00 .00 25.12 .00 .00 .00 .00 .00 .00

Probable Sources Contributing to Impairment

California, Mad-Redwood Watershed

 Description of this table
State Source Name Size of Assessed Waters with Probable Sources of Impairment
Rivers, Streams, Creeks (Miles) Lakes, Ponds, Reservoir (Acres) Bays, Estuaries (Square Miles) Coastal Shorelines (Miles) Oceans, Near Coastal Waters (Square Miles) Wetlands (Acres) Great Lakes Shoreline (Miles) Great Lakes Open Waters (Square Miles) Inland Lake Shoreline (Miles)
AGRICULTURE 940.57 .00 29.48 .00 .00 .00 .00 .00 .00
AGRICULTURE-ANIMAL 609.04 .00 .00 .00 .00 .00 .00 .00 .00
AGRICULTURE-IRRIGATION TAILWATER 609.04 .00 .00 .00 .00 .00 .00 .00 .00
AGRICULTURE-STORM RUNOFF 609.04 .00 .00 .00 .00 .00 .00 .00 .00
AGRICULTURE-SUBSURFACE DRAINAGE 609.04 .00 .00 .00 .00 .00 .00 .00 .00
BALLAST WATER .00 .00 25.12 .00 .00 .00 .00 .00 .00
BOAT DISCHARGES/VESSEL WASTES .00 .00 25.12 .00 .00 .00 .00 .00 .00
BOATYARDS .00 .00 25.12 .00 .00 .00 .00 .00 .00
CHANNEL EROSION 627.98 .00 .00 .00 .00 .00 .00 .00 .00
CONSTRUCTION/LAND DEVELOPMENT 350.47 .00 .00 .00 .00 .00 .00 .00 .00
DISTURBED SITES (LAND DEVELOP.) 350.47 .00 .00 .00 .00 .00 .00 .00 .00
EROSION/SILTATION 415.29 .00 .00 .00 .00 .00 .00 .00 .00
HABITAT MODIFICATION 1,366.02 .00 .00 .00 .00 .00 .00 .00 .00
HIGHWAY/ROAD/BRIDGE CONSTRUCTION 331.53 .00 .00 .00 .00 .00 .00 .00 .00
HYDROMODIFICATION 1,282.26 .00 .00 .00 .00 .00 .00 .00 .00
ILLEGAL DUMPING .00 .00 25.12 .00 .00 .00 .00 .00 .00
INTENSIVE ANIMAL FEEDING OPERATIONS 609.04 .00 .00 .00 .00 .00 .00 .00 .00
LUST/LEAKING UNDERGROUND STORAGE TANKS .00 .00 25.12 .00 .00 .00 .00 .00 .00
MAJOR INDUSTRIAL POINT SOURCE 609.04 .00 .00 .00 .00 .00 .00 .00 .00
MAJOR MUNICIPAL POINT SOURCE-DRY AND/OR WET WEATHER DISCHARGE 609.04 .00 .00 .00 .00 .00 .00 .00 .00
MARINAS AND RECREATIONAL BOATING .00 .00 25.12 .00 .00 .00 .00 .00 .00
MINOR INDUSTRIAL POINT SOURCE 609.04 .00 .00 .00 .00 .00 .00 .00 .00
NATURAL SOURCES 522.72 .00 .00 .00 .00 .00 .00 .00 .00
NONPOINT SOURCE 1,088.50 .00 25.12 .00 .00 .00 .00 .00 .00
OUT-OF-STATE SOURCE 609.04 .00 .00 .00 .00 .00 .00 .00 .00
PASTURE GRAZING-RIPARIAN AND/OR UPLAND 609.04 .00 4.36 .00 .00 .00 .00 .00 .00
RESOURCE EXTRACTION 654.28 .00 .00 .00 .00 .00 .00 .00 .00
ROAD CONSTRUCTION 18.94 .00 .00 .00 .00 .00 .00 .00 .00
SEDIMENT RESUSPENSION 18.94 .00 .00 .00 .00 .00 .00 .00 .00
SILVICULTURE 1,786.04 .00 .00 .00 .00 .00 .00 .00 .00
TRANSIENT ENCAMPMENTS .00 .00 25.12 .00 .00 .00 .00 .00 .00
UNKNOWN NONPOINT SOURCE 654.28 .00 25.12 .00 .00 .00 .00 .00 .00
UPSTREAM IMPOUNDMENT 1,263.32 .00 .00 .00 .00 .00 .00 .00 .00
WATER DIVERSIONS 609.04 .00 .00 .00 .00 .00 .00 .00 .00
Clicking anywhere on this watershed map will take you to the Enviromapper for Water website, where you can view and map various types of environmental information for the watershed. This information includes Superfund sites, water discharge permits, toxic releases, and more.

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