← Impaired waters

Waterbody profile

Official Water Board record · 2026 cycle

East Walker River, below Bridgeport Reservoir

Waterbody ID (WBID)
CAR6301001020011204100242
County / counties
Mono
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 (9)

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
ArsenicMetals161742Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
IronMetals161778List on 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
ManganeseMetals161781Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
NitrogenNutrients169156Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
Oxygen, DissolvedNutrients161791Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
PhosphorusNutrients163605Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
Sedimentation/SiltationSediment69434Do Not Delist from 303(d) list (TMDL required list)Original5A TMDL still requiredLow
Total Dissolved SolidsSALINITY/TOTAL DISSOLVED SOLIDS/CHLORIDES/SULFATES163606List on 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
TurbiditySediment161804Do 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
CAR6301001020011204100242
CALWNUM
8630.100101, 8630.100102, 8630.100103
WBD code
160503010110, 160503010301, 160503010302
Geometry
Official Water Board GIS (CA_WATERBOARDS_GIS_FINAL_2026)

Location

Official 2026 Water Board geometry. Demonstration facility markers are shown for context only.

Loading map…
Watershed
Assessed size
8.35 Miles

Derived facility associations

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

Derived
Bridgeport Landfill

Bridgeport · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Bryant Field

Bridgeport · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

US Marine Corps

Bridgeport · 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.