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Waterbody profile

Official Water Board record · 2026 cycle

Big Bear Lake

Waterbody ID (WBID)
CAL8017100019990208151909
County / counties
San Bernardino
Regional Water Board
Regional Board 8 - Santa Ana Region
Waterbody type
Lake & Reservoir
Condition category
Category 5 — 303(d) listed, TMDL required
Integrated Report cycle
2026

303(d) listings (8)

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
Anatoxin-AOther Cause152000List on 303(d) list (TMDL required list)Revised5A TMDL still requiredMedium
ChlordanePesticides132494Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
DDT (Dichlorodiphenyltrichloroethane)Pesticides149242Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
MercuryMetals153006Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
MicrocystinsOther Cause152831List on 303(d) list (TMDL required list)Revised5A TMDL still requiredMedium
Noxious aquatic plantsOther Cause77297List on 303(d) list (being addressed by USEPA approved TMDL)Original5B Addressed by USEPA-approved TMDLBig Bear Lake Watershed Nutrient TMDL
NutrientsNutrients69083List on 303(d) list (being addressed by USEPA approved TMDL)Original5B Addressed by USEPA-approved TMDLBig Bear Lake Watershed Nutrient TMDL
PCBs (Polychlorinated biphenyls)Toxic Organics132505Do 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
CAL8017100019990208151909
CALWNUM
4801.71
WBD code
180702030102, 180702030103
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
2820.27 Acres

Derived facility associations

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

Derived
Bear Valley Paving

Big Bear Lake · Notice of Intent · 0.65 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Big Bear Disposal Inc

Big Bear Lake · Notice of Intent · 0.93 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Big Bear Lake - Fox Farm Rd (Site 7315)

Big Bear Lake · Notice of Non-Applicability · 0.66 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Pine Knot Marina

Big Bear Lake · No Exposure Certification · 0.07 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Robertsons Big Bear Plant

Big Bear Lake · 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.