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Waterbody profile

Official Water Board record · 2026 cycle

Salt Slough (upstream from confluence with San Joaquin River)

Waterbody ID (WBID)
CAR5412000019990126155034
County / counties
Merced
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 (6)

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
ChlorpyrifosPesticides159102List on 303(d) list (being addressed by action other than TMDL)Revised5C Addressed by action other than a TMDL
Electrical ConductivitySALINITY/TOTAL DISSOLVED SOLIDS/CHLORIDES/SULFATES72027Do Not Delist from 303(d) list (TMDL required list)Original5A TMDL still requiredLow
MalathionPesticides159112List on 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
MercuryMetals165441Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
Oxygen, DissolvedNutrients159116Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
ToxicityTotal Toxics159120Do Not Delist from 303(d) list (being addressed with action other than TMDL)Revised5C Addressed by action other than a TMDL

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
CAR5412000019990126155034
CALWNUM
6541.2
WBD code
180400012007, 180400012103
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
10.67 Miles

Derived facility associations

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

Derived
Valley Auto Wreckers

Stevinson · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Valley Auto Wreckers

Stevinson · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Valley Auto Wreckers Inc

Stevinson · Notice of Non-Applicability

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.