← Impaired waters

Waterbody profile

Official Water Board record · 2026 cycle

Petaluma River (tidal portion)

Waterbody ID (WBID)
CAR2063004020020916200425
County / counties
Marin, Sonoma
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 (4)

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
DiazinonPesticides151287Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
Indicator BacteriaPathogens149089Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)Revised5B Addressed by USEPA-approved TMDLPetaluma River Bacteria TMDL
NickelMetals151288Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
NutrientsNutrients151289Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow

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
CAR2063004020020916200425
CALWNUM
2206.3004
WBD code
180500020801, 180500020802
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
1.79 Miles

Derived facility associations

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

Derived
Golden Gate Transit

Novato · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

North Bay Operations Maintenance

Vallejo · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Petaluma Plant

Petaluma · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Richmond Sanitary Service Inc

Richmond · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

San Rafael Airport

San Rafael · 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.