California Stormwater Intelligence
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Waterbody profile

Official Water Board record · 2026 cycle

Susan River (Willard Creek to Susanville)

Waterbody ID (WBID)
CAR6372005020080815013207
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
BoronMetals163734List on 303(d) list (TMDL required list)Revised5A — TMDL still required—Low
ChlorideSALINITY/TOTAL DISSOLVED SOLIDS/CHLORIDES/SULFATES163735List on 303(d) list (TMDL required list)Revised5A — TMDL still required—Low
NitrogenNutrients170366Do Not Delist from 303(d) list (TMDL required list)Revised5A — TMDL still required—Low
SulfatesToxic Inorganics163737List on 303(d) list (TMDL required list)Revised5A — TMDL still required—Low
Total Dissolved SolidsSALINITY/TOTAL DISSOLVED SOLIDS/CHLORIDES/SULFATES163738Do Not Delist from 303(d) list (TMDL required list)Revised5A — TMDL still required—Low
TurbiditySediment162300Do Not Delist from 303(d) list (TMDL required list)Revised5A — TMDL still required—Low
Unknown ToxicityTotal Toxics75331Do Not Delist from 303(d) list (TMDL required list)Revised5A — TMDL still required—Low

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
CAR6372005020080815013207
CALWNUM
8637.200400, 8637.200601, 8637.200802, 8637.200905
WBD code
180800030703, 180800030704, 180800030705
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
11.11 Miles

Derived facility associations

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

Derived
Bass Hill Landfill

Susanville · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

C&S Waste Solutions of Lassen County

Susanville · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

California Correctional Center

Susanville · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

HL Power Company LP

Wendel · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Pit Row Dismantlers

Susanville · Notice of Intent · 0.65 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Susanville Sanitary District W W T P

Susanville · Notice of Intent · 0.80 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Susanville Towing Dismantling

Susanville · Notice of Intent · 0.24 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Turner Excavating Inc

Susanville · No Exposure Certification · 0.63 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Viewland Pit

Litchfield · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Ward Lake Pit/ BLM 4

Litchfield · Notice of Non-Applicability

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.