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Waterbody profile

Official Water Board record · 2026 cycle

Humbug Creek (Diggins Creek to Yuba River, South Fork)

Waterbody ID (WBID)
CAR5173203019980814102308
County / counties
Nevada
Regional Water Board
Regional Board 5 - Central Valley 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
ChromiumMetals88065List on 303(d) list (TMDL required list)Original5A TMDL still requiredLow
CopperMetals77639Do Not Delist from 303(d) list (TMDL required list)Original5A TMDL still requiredLow
IronMetals88119List on 303(d) list (TMDL required list)Original5A TMDL still requiredLow
MercuryMetals74128Do Not Delist from 303(d) list (TMDL required list)Original5A TMDL still requiredLow
pHOther Cause146014Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
Sedimentation/SiltationSediment72260List on 303(d) list (TMDL required list)Original5A TMDL still requiredLow
ZincMetals69295Do Not Delist from 303(d) list (TMDL required list)Original5A 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
CAR5173203019980814102308
CALWNUM
5517.320301, 5517.320304
WBD code
180201250702
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
2.27 Miles

Derived facility associations

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

Derived
Red Ledge Mine

Nevada City · 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.