Hill Slough

Waterbody ID (WBID): CAR2072300020050602210728
County / counties: Solano
Regional Water Board: Regional Board 2 - San Francisco Bay Region
Waterbody type: River & Stream
Condition category: Category 4a — TMDL completed
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
MercuryMetals	68186	List on 303(d) list (being addressed by USEPA approved TMDL)	Revised	5B — Addressed by USEPA-approved TMDL	Suisun Marsh Dissolved Oxygen and Mercury TMDL	—
Oxygen, DissolvedNutrients	100852	List on 303(d) list (being addressed by USEPA approved TMDL)	Revised	5B — Addressed by USEPA-approved TMDL	Suisun Marsh Dissolved Oxygen and Mercury TMDL	—

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: CAR2072300020050602210728
CALWNUM: 2207.2302
WBD code: 180500010401
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: 4.07 Miles

Derived facility associations

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

Derived

Benicia Harbor Corporation

Benicia · No Exposure Certification

derived_watershed_association