← 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 required—Low
Temperature, waterOther Cause158858Do Not Delist from 303(d) list (TMDL required list)Revised5A — TMDL still required—Low
ToxicityTotal Toxics158859Do 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
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.