← Impaired waters

Waterbody profile

Official Water Board record · 2026 cycle

Napa River, Mare Island Strait

Waterbody ID (WBID)
CAR2061000020160627048321
County / counties
Solano
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 (5)

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
ChlordanePesticides151297Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
DieldrinPesticides151298Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
MercuryMetals100336List on 303(d) list (being addressed by USEPA approved TMDL)Original5B Addressed by USEPA-approved TMDLSan Francisco Bay Mercury
PCBs (Polychlorinated biphenyls)Toxic Organics143443Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)Revised5B Addressed by USEPA-approved TMDLSan Francisco Bay PCBs
Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD)Pesticides151604Do 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
CAR2061000020160627048321
CALWNUM
2206.1
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
3.76 Miles

Derived facility associations

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

Derived
461

Vallejo · Notice of Intent · 0.41 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Abrasive Blasting Coating

Vallejo · Notice of Intent · 0.57 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Alco Iron Metal Co

Vallejo · Notice of Intent · 0.95 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Bayshore Materials Inc

Vallejo · Notice of Intent · 0.81 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Cipher Enterprises Incorporated

Vallejo · No Exposure Certification · 0.76 km away

derived_receiving_water

Derived by California Stormwater Intelligence

CITY TAXI CAB COMPANY

Vallejo · Notice of Intent · 0.88 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Cordeiro Vault Co Inc

Vallejo · Notice of Intent · 0.92 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

F&M Steel Fabricators Inc

Vallejo · Notice of Intent · 0.35 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Golden Gate Transit

Novato · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

GS Hydraulic Hose Corporation

Vallejo · No Exposure Certification · 0.38 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

jr delivery service

Vallejo · Notice of Non-Applicability · 0.86 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Kreysler and Associates

Vallejo · No Exposure Certification · 0.60 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Mare Island Dry dock

Vallejo · Notice of Intent · 0.38 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Marin Cnty Airport

Novato · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Michaels Trans Serv

Vallejo · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

North Bay Operations Maintenance

Vallejo · Notice of Intent · 0.30 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Northbay Transit Group Inc

Vallejo · No Exposure Certification · 0.93 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Petaluma Plant

Petaluma · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

SMALLER HAULER

Vallejo · Notice of Non-Applicability · 0.79 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Times Herald

Vallejo · Notice of Non-Applicability · 0.83 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Vallejo Marine Craft

Vallejo · Notice of Intent · 0.31 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

XKT Engineering Inc

Vallejo · No Exposure Certification · 0.59 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Yellow Cab

Vallejo · No Exposure Certification · 0.93 km away

derived_receiving_water

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.