California Stormwater Intelligence
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Waterbody profile

Official Water Board record · 2026 cycle

Pacific Ocean Shoreline, San Mateo Canyon HA, at San Mateo Creek outlet

Waterbody ID (WBID)
CAC9014000020090218165222
County / counties
San Diego
Regional Water Board
Regional Board 9 - San Diego Region
Waterbody type
Coastal & Bay Shoreline
Condition category
Category 5 — 303(d) listed, TMDL required
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
Indicator BacteriaPathogens128001Do 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
Aug 21, 2026, 12:44 AM UTC
Waterbody ID
CAC9014000020090218165222
CALWNUM
4901.320000, 4901.400000, 4901.510000
WBD code
180703010303
Geometry
Official Water Board GIS (CA_WATERBOARDS_GIS_FINAL_2026)
View official Water Board fact sheet ↗Download Appendix A source file ↗

Location

Official 2026 Water Board geometry. Demonstration facility markers are shown for context only.

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Watershed
—
Assessed size
0.19 Miles

Derived facility associations

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

Derived
Flavorchem Corporation

San Clemente · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Freedman Industrial Salvage Inc

Stanton · Region 8 - Scrap Metal Permit

derived_watershed_association

Derived by California Stormwater Intelligence

Kelcourt Plastics

San Clemente · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Prima Deshecha Landfill

San Juan Capistrano · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

SnowPure LLC

San Clemente · No Exposure Certification

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.