California Stormwater Intelligence
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Waterbody profile

Official Water Board record · 2026 cycle

Pacific Ocean, Pt. Buchon to Pt. San Luis

Waterbody ID (WBID)
CAO3102500020200702053689
County / counties
San Luis Obispo
Regional Water Board
Regional Board 3 - Central Coast Region
Waterbody type
Ocean
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
MercuryMetals131337List on 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, 10:56 PM UTC
Waterbody ID
CAO3102500020200702053689
CALWNUM
3310.240201, 3310.250001, 3310.250002, 3310.250003, 3310.260004
WBD code
180600060504, 180600060705
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
27439.6 Acres

Derived facility associations

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

Derived
American Star Trailways

Pismo Beach · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Diablo Canyon Power Plant

Avila Beach · Notice of Intent · 0.29 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

GE Forge and Tool Works

Grover City · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Max Auto Salvage Inc

Arroyo Grande · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

R R Auto Wrecking

Arroyo Grande · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

San Luis Obispo Cnty Oceano Airport

Oceano · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Timos Auto Wrecking LLC

Arroyo Grande · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Topco Inc

Grover City · 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.