Eel River HU, Middle Fork HA, Eden Valley and Round Valley HSAs

Waterbody ID (WBID): CAR1117104419980710113432
County / counties: Lake, Mendocino
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 / stressor	Decision ID	Final listing decision	Decision status	TMDL requirement status	TMDL project	TMDL priority
AluminumMetals	168390	Do Not Delist from 303(d) list (TMDL required list)	Original	5A — TMDL still required	—	Low
SedimentSediment	168392	List on 303(d) list (being addressed by USEPA approved TMDL)	Revised	5B — Addressed by USEPA-approved TMDL	Middle Fork Eel River	—
Sedimentation/SiltationSediment	76600	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)	Original	5B — Addressed by USEPA-approved TMDL	Middle Fork Eel River	—
Temperature, waterOther Cause	155302	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)	Revised	5B — Addressed by USEPA-approved TMDL	Eel River, Middle Fork Sediment and Temperature TMDLs	—

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: CAR1117104419980710113432
CALWNUM: 1111.620602, 1111.710101, 1111.710102, 1111.710204, 1111.710404, 1111.710406, 1111.720201, 1111.720202, 1111.720400, 1111.740402
WBD code: 180101040105, 180101040301, 180101040304, 180101040401, 180101040402, 180101040403, 180101040501, 180101040502, 180101040506, 180101040507
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: 2705.51 Miles

Derived facility associations

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

Derived

McKenzie Gravel Bar

Covelo · Notice of Intent · 0.13 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Rowland Gravel Bar

Covelo · Notice of Intent · 0.13 km away

derived_receiving_water

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.