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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 required—Low
MercuryMetals131278Do 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
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.