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Waterbody profile

Official Water Board record · 2026 cycle

Lagunitas Creek

Waterbody ID (WBID)
CAR2011302019980928162224
County / counties
Marin
Regional Water Board
Regional Board 2 - San Francisco Bay 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
Indicator BacteriaPathogens149000Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)Revised5B — Addressed by USEPA-approved TMDLTomales Bay Pathogens—
NutrientsNutrients151284Do Not Delist from 303(d) list (TMDL required list)Revised5A — TMDL still required—Low
Sedimentation/SiltationSediment69442Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)Original5B — Addressed by USEPA-approved TMDLLagunitas Creek Sediment—

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
CAR2011302019980928162224
CALWNUM
2201.110000, 2201.120302, 2201.130201, 2201.130203, 2201.130204, 2201.130301
WBD code
180500050101, 180500050102, 180500050103, 180500050104, 180500050304
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
16.2 Miles

Derived facility associations

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

Derived
Fisher Smith Boatworks

Marshall · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Heidrun Meadery

Point Reyes Station · No Exposure Certification · 0.74 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Nicasio Rock Quarry Lafranchi Quarry

Nicasio · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

West Marin Compost

Nicasio · Notice of Intent

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.