← Impaired waters

Waterbody profile

Official Water Board record · 2026 cycle

Tuolumne River, Lower (Don Pedro Reservoir to San Joaquin River)

Waterbody ID (WBID)
CAR5355000019980817143435
County / counties
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
MercuryMetals169264Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
Temperature, waterOther Cause158868Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
ToxicityTotal Toxics158869Do 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
CAR5355000019980817143435
CALWNUM
53550000
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
57.1 Miles

Derived facility associations

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

Derived
711 Materials Inc

Waterford · Notice of Non-Applicability · 0.20 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Ace Auto Wreckers Inc

Modesto · Notice of Intent · 0.53 km away

derived_receiving_water

Derived by California Stormwater Intelligence

American Auto Dismantling LLC

Modesto · Notice of Intent · 0.27 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Bertelson Precast Corp

Modesto · Notice of Intent · 0.10 km away

derived_receiving_water

Derived by California Stormwater Intelligence

CALIFORNIA AUTO PARTS & AUTO DISMANTLER INC

Modesto · Notice of Intent · 0.71 km away

derived_receiving_water

Derived by California Stormwater Intelligence

CMI Hughson SG HMA Facility

Hughson · Notice of Non-Applicability · 0.30 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Compass Foods

Modesto · Notice of Intent · 0.15 km away

derived_receiving_water

Derived by California Stormwater Intelligence

CSC MANUFACTURING INC

Modesto · No Exposure Certification · 0.92 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Delaney Aggregates

La Grange · Notice of Intent · 0.07 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Fastenal Company

Modesto · Notice of Intent · 0.97 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Flowers Baking Co of Modesto

Modesto · Notice of Intent · 0.99 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Foam Fabricators Inc

Modesto · Notice of Intent · 0.70 km away

derived_receiving_water

Derived by California Stormwater Intelligence

G3 3700 Finch Warehouse

Modesto · No Exposure Certification · 0.90 km away

derived_receiving_water

Derived by California Stormwater Intelligence

G3 Enterprises Closure

Modesto · No Exposure Certification · 0.59 km away

derived_receiving_water

Derived by California Stormwater Intelligence

G3 Enterprises Finch Campus

Modesto · Notice of Intent · 0.78 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Gallo Glass

Modesto · Notice of Intent · 0.66 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Gallo Glass Company dba Halo Glass Recycling

Modesto · Notice of Intent · 0.76 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Gilton Resource Recovery Trans

Modesto · Notice of Intent · 0.86 km away

derived_receiving_water

Derived by California Stormwater Intelligence

GRACE MOVING COMPANY

Modesto · Notice of Non-Applicability · 0.78 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Graham Packaging Company LP

Modesto · Notice of Intent · 0.62 km away

derived_receiving_water

Derived by California Stormwater Intelligence

M & D Moving Express

Modesto · Notice of Non-Applicability · 0.01 km away

derived_receiving_water

Derived by California Stormwater Intelligence

MATRIX AUTO WRECKERS LLC

Modesto · Notice of Intent · 0.76 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Michael Outley

Actis · Notice of Non-Applicability · 0.06 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Modesto Auto Wreckers 2

Modesto · Notice of Intent · 0.29 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Modesto Auto Wrecking

Modesto · Notice of Intent · 0.28 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Modesto Transfer and Storage Inc

Modesto · Notice of Non-Applicability · 0.68 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Pacific Storage Company

Modesto · Notice of Non-Applicability · 0.59 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Residence

Modesto · Notice of Non-Applicability · 0.69 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Seven Up Bottling Co

Modesto · Notice of Intent · 0.55 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Sierra Design & Manufacturing LLC

Modesto · No Exposure Certification · 0.62 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Silgan Containers Mfg Corp

Modesto · No Exposure Certification · 0.91 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Snowden Enterprises

Modesto · No Exposure Certification · 0.53 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Star Recycling Co

Ceres · Notice of Non-Applicability · 0.54 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Sutter Avenue Primary Treatment Plant

Modesto · Notice of Intent · 0.31 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Truss Engineering Inc

Modesto · No Exposure Certification · 0.10 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Universal Services Recycling Inc

Modesto · Notice of Intent · 0.59 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Waterford Auto Truck Dis

Waterford · Notice of Intent · 0.29 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Waterford Unified Transportation

Waterford · Notice of Intent · 0.77 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Western Meat Processing Inc

Modesto · Notice of Non-Applicability · 0.13 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.