← Impaired waters

Waterbody profile

Official Water Board record · 2026 cycle

Stanislaus River, Lower

Waterbody ID (WBID)
CAR5353000019980817151834
County / counties
Calaveras, Stanislaus, Tuolumne
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 (3)

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
MercuryMetals169302Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
Temperature, waterOther Cause158858Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
ToxicityTotal Toxics158859Do 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
CAR5353000019980817151834
CALWNUM
53530000
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
60.32 Miles

Derived facility associations

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

Derived
Better Built Truss

Ripon · Notice of Intent · 0.99 km away

derived_receiving_water

Derived by California Stormwater Intelligence

California Freight

Ripon · Notice of Intent · 0.94 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Diamond Pet Foods

Ripon · Notice of Non-Applicability · 0.58 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Lyru Engineering Incorporated

San Leandro · No Exposure Certification · 0.91 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Munn & Perkins

Escalon · Notice of Non-Applicability · 0.79 km away

derived_receiving_water

Derived by California Stormwater Intelligence

NuCal Foods

Ripon · Notice of Intent · 0.94 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Nulaid Foods

Ripon · Notice of Intent · 0.91 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Recology Blossom Valley Organics North Modesto

Modesto · Notice of Intent · 0.42 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Ripon Energy

Ripon · Notice of Non-Applicability · 0.81 km away

derived_receiving_water

Derived by California Stormwater Intelligence

riverbank recycling

Riverbank · Notice of Non-Applicability · 0.93 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Riverside Auto & Truck Inc

Riverbank · Notice of Intent · 0.09 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Thunderbolt Wood Treating

Riverbank · Notice of Intent · 0.78 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Triple A Pallets Inc

Riverbank · Notice of Intent · 0.83 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Yummy Industries LLC

Riverbank · No Exposure Certification · 0.59 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.