California Stormwater Intelligence
← Impaired waters

Waterbody profile

Official Water Board record · 2026 cycle

Eel River HU, Van Duzen River HA

Waterbody ID (WBID)
CAR1112101219990602104416
County / counties
Humboldt, Trinity
Regional Water Board
Regional Board 1 - North Coast Region
Waterbody type
River & Stream
Condition category
Category 5 — 303(d) listed, TMDL required
Integrated Report cycle
2026

303(d) listings (4)

Each row is one official listing decision from Appendix A of the Final 2026 California Integrated Report. Source terminology is preserved as published.

Pollutant / stressorDecision IDFinal listing decisionDecision statusTMDL requirement statusTMDL projectTMDL priority
AluminumMetals168433Do Not Delist from 303(d) list (TMDL required list)Revised5A — TMDL still required—Low
Benthic Community EffectsOther Cause169274List on 303(d) list (TMDL required list)Revised5A — TMDL still required—Low
SedimentSediment168436List on 303(d) list (being addressed by USEPA approved TMDL)Revised5B — Addressed by USEPA-approved TMDLVan Duzen River Sediment—
Sedimentation/SiltationSediment69071List on 303(d) list (being addressed by USEPA approved TMDL)Original5B — Addressed by USEPA-approved TMDLVan Duzen River Sediment—

Source & provenance

Agency
California State Water Resources Control Board
Report
Final 2026 California Integrated Report
Dataset
Appendix A — 2026 303(d) List of Impaired Waters
Imported
Sep 16, 2026, 10:56 PM UTC
Waterbody ID
CAR1112101219990602104416
CALWNUM
1111.130101, 1111.220401, 1111.220403, 1111.220501, 1111.220505, 1111.220604, 1111.230102, 1111.230104, 1111.230201, 1111.230204
WBD code
180101050701, 180101050702, 180101050703, 180101050801, 180101050802, 180101050803, 180101050901, 180101050902, 180101050903, 180101050904, (Total Count: 12)
Geometry
Official Water Board GIS (CA_WATERBOARDS_GIS_FINAL_2026)
View official Water Board fact sheet ↗Download Appendix A source file ↗

Location

Official 2026 Water Board geometry. Demonstration facility markers are shown for context only.

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Watershed
—
Assessed size
1293.62 Miles

Derived facility associations

Industrial stormwater facilities geographically associated with this waterbody. These are derived spatial associations, not Water Board findings.

Derived
Bridgeville Quarry

Bridgeville · Notice of Intent · 0.26 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Cottrell Ranch Quarry

Bridgeville · Notice of Intent · 0.79 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Degnan Hansen Quarry

Bridgeville · Notice of Intent · 0.18 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Eureka Ready Mix Concrete Co

Fortuna · Notice of Intent · 0.69 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Mercer Fraser Co

Dinsmore · Notice of Intent · 0.07 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Moore Quarry

Kneeland · Notice of Intent · 0.14 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Facility records are official Industrial General Permit registrations, but the association between a facility and this waterbody is derived geographically (proximity or shared HUC12 subwatershed) and is not a Water Board receiving-water determination. Where a permit carries a Water Board-stated TMDL requirement naming this water, it is listed separately above.