← 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 required—Low
DieldrinPesticides151298Do Not Delist from 303(d) list (TMDL required list)Revised5A — TMDL still required—Low
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 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
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.