← Impaired waters

Waterbody profile

Official Water Board record · 2026 cycle

Pine Creek subwatershed (Contra Costa Co, tributary to Walnut Creek)

Waterbody ID (WBID)
CAR2073101119990218101152
County / counties
Contra Costa
Regional Water Board
Regional Board 2 - San Francisco Bay Region
Waterbody type
River & Stream
Condition category
Category 4a — TMDL completed
Integrated Report cycle
2026

303(d) listings (1)

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
DiazinonPesticides70192List on 303(d) list (being addressed by USEPA approved TMDL)Original5B — Addressed by USEPA-approved TMDLSan Francisco Bay Urban Creeks Diazinon—

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, 10:56 PM UTC
Waterbody ID
CAR2073101119990218101152
CALWNUM
2207.310101, 2207.310102, 2207.310104
WBD code
180500010203, 180500010204
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
26.09 Miles

Derived facility associations

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

Derived
1704 Route 4 Concord Batch Plant

Martinez · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

ABBA STORGE

Concord · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Acme Landfill

Martinez · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

ACRO Associates

Concord · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Allied Waste Systems Inc

Pacheco · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

AMR-Concord-3

Concord · No Exposure Certification · 0.96 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Arctic Glacier

Concord · No Exposure Certification · 0.37 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Bay Area Rapid Transit Concord

Concord · Notice of Intent · 0.37 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Biocare Medical LLC

Pacheco · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Carone Co Inc

Concord · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Castle Hill Holdings Inc

Pleasant Hill · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Central Concrete

Martinez · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Clayton Quarry

Clayton · Notice of Intent · 0.06 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Concord Yellow Cab Inc

Pacheco · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Conrad Viano Winery

Martinez · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Contra Costa County Buchanan Field

Concord · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Contra Costa Transfer Recovery Station

Martinez · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Dafodin Cargo

Martinez · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Emcore Corporation

Concord · Notice of Intent · 0.29 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Falck Northern California

Pacheco · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

FedEx Express Corp CCRA

Pacheco · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Fresenius Medical Care

Concord · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Jaswinder Singh

Concord · Notice of Non-Applicability · 0.45 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Mt Diablo Unified Sch Dist Mai

Concord · Notice of Intent · 0.88 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Pleasant Paper Recycling Inc

Concord · Notice of Intent · 0.16 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Pleasant Paper Recycling Inc

Concord · Notice of Intent · 0.18 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Royal Trucking

Concord · Notice of Intent · 0.21 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

SFPP LP Concord Station

Concord · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

UPS Concord Center CACON

Concord · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

USPS Walnut Creek VMF

Walnut Creek · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

ygnacio center

Walnut Creek · 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.