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Waterbody profile

Official Water Board record · 2026 cycle

Natoma, Lake

Waterbody ID (WBID)
CAL5192100020020430135321
County / counties
Sacramento
Regional Water Board
Regional Board 5 - Central Valley Region
Waterbody type
Lake & Reservoir
Condition category
Category 5 — 303(d) listed, TMDL required
Integrated Report cycle
2026

303(d) listings (2)

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
Indicator BacteriaPathogens126982List on 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
MercuryMetals131278Do 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
Aug 21, 2026, 12:44 AM UTC
Waterbody ID
CAL5192100020020430135321
CALWNUM
51921000
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
524.31 Acres

Derived facility associations

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

Derived
Agilent Technologies

Folsom · Notice of Intent · 0.37 km away

derived_receiving_water

Derived by California Stormwater Intelligence

CA Dept Corrections Folsom

Represa · Notice of Intent · 0.58 km away

derived_receiving_water

Derived by California Stormwater Intelligence

CH SS Fund Sacramento Folsom Auburn LP

Folsom · Notice of Non-Applicability · 0.94 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Clock Tower Storage

Folsom · No Exposure Certification · 0.24 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Coffee Quintessence

Folsom · Notice of Non-Applicability · 0.19 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Folsom - Auburn Rd (Site 1953)

Folsom · Notice of Non-Applicability · 0.94 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Folsom - Parkshore Dr. (1894)

Folsom · Notice of Non-Applicability · 0.42 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Folsom City Corp Yard

Folsom · Notice of Intent · 0.12 km away

derived_receiving_water

Derived by California Stormwater Intelligence

General Dynamics OTS

Folsom · No Exposure Certification · 0.49 km away

derived_receiving_water

Derived by California Stormwater Intelligence

JAF Tire Recycling

Folsom · No Exposure Certification · 0.52 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Kikkoman Foods Inc

Folsom · No Exposure Certification · 0.54 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Main Office

Folsom · Notice of Non-Applicability · 0.15 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Phyzhon Health Inc

Folsom · No Exposure Certification · 0.57 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Sentry Hazel & 50

Rancho Cordova · No Exposure Certification · 0.67 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Sentry Storage Folsom Dam

Folsom · No Exposure Certification · 0.69 km away

derived_receiving_water

Derived by California Stormwater Intelligence

VSPOne Optical Technology Centers Sacramento

Folsom · Notice of Intent · 0.40 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.