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Waterbody profile

Official Water Board record · 2026 cycle

Susan River (Headwaters to Willard Crk)

Waterbody ID (WBID)
CAR6372001020080815005311
County / counties
Lassen
Regional Water Board
Regional Board 6 - Lahontan Region
Waterbody type
River & Stream
Condition category
Category 5 — 303(d) listed, TMDL required
Integrated Report cycle
2026

303(d) listings (7)

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
Benthic Community EffectsOther Cause171777List on 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
BoronMetals163724List on 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
ChlorideSALINITY/TOTAL DISSOLVED SOLIDS/CHLORIDES/SULFATES163725Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
NitrogenNutrients170409Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
PhosphorusNutrients163726Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
SulfatesToxic Inorganics163727List on 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
Total Dissolved SolidsSALINITY/TOTAL DISSOLVED SOLIDS/CHLORIDES/SULFATES163728Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow

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, 10:57 PM UTC
Waterbody ID
CAR6372001020080815005311
CALWNUM
8637.200101, 8637.200103, 8637.200105, 8637.200201, 8637.200202, 8637.200203, 8637.200400
WBD code
180800030401, 180800030403, 180800030405, 180800030406, 180800030701, 180800030703
Geometry
Official Water Board GIS (CA_WATERBOARDS_GIS_FINAL_2026)

Location

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

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Watershed
Assessed size
20.91 Miles

Derived facility associations

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

Derived
Pit Row Dismantlers

Susanville · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Susanville Sanitary District W W T P

Susanville · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Susanville Towing Dismantling

Susanville · Notice of Intent

derived_watershed_association

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.