California Stormwater Intelligence

← Impaired waters

Waterbody profile

Official Water Board record · 2026 cycle

Laguna Lake

Waterbody ID (WBID): CAL3102401020191031047091
County / counties: San Luis Obispo
Regional Water Board: Regional Board 3 - Central Coast Region
Waterbody type: Lake & Reservoir
Condition category: Category 5 — 303(d) listed, TMDL required
Integrated Report cycle: 2026

303(d) listings (2)

Each row is one official listing decision from Appendix A of the Final 2026 California Integrated Report. Source terminology is preserved as published.

Pollutant / stressor	Decision ID	Final listing decision	Decision status	TMDL requirement status	TMDL project	TMDL priority
AmmoniaNutrients	128321	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
MicrocystinsOther Cause	149031	List on 303(d) list (TMDL required list)	Revised	5A — 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: CAL3102401020191031047091
CALWNUM: 3310.240102
WBD code: 180600060702
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.

Loading map…

Watershed: —
Assessed size: 101.84 Acres

Derived facility associations

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

Derived

AIR VOL BLOCK LLC

San Luis Obispo · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Bimbo Bakeries USA Inc

San Luis Obispo · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Bimbo Bakeries USA Inc San Luis Obispo Sales Center

San Luis Obispo · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Calportland Construction

San Luis Obispo · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Edna Valley Vineyards

San Luis Obispo · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Entegris Plant 1750

San Luis Obispo · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

San Luis Obispo · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

FedEx Freight San Luis Obispo

San Luis Obispo · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

San Luis Obispo · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

First Transit Inc 55575

San Luis Obispo · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Hanson Aggregates

San Luis Obispo · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Kompogas SLO LLC

San Luis Obispo · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Phase 2 Celars LLC

San Luis Obispo · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Phase 2 Cellars

San Luis Obispo · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Promega Biosciences Inc

San Luis Obispo · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

San Luis Auto Salvage

San Luis Obispo · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

San Luis Corp Yard San Luis Coastal Unified

San Luis Obispo · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

San Luis Garbage Company

San Luis Obispo · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

San Luis Obispo Cnty Mc Chesne

San Luis Obispo · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

San Luis Opispo City WRRF

San Luis Obispo · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

SLO Brewing Co LLC

San Luis Obispo · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

SLO City Storage

San Luis Obispo · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Stephen Ross Wine Cellars

San Luis Obispo · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

UPS San Luis Obispo CASLO

San Luis Obispo · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

USPS San Luis Obispo VMF

San Luis Obispo · No Exposure Certification · 0.28 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

San Luis Obispo · 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.