California Stormwater Intelligence

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Waterbody profile

Official Water Board record · 2026 cycle

Gallighan Slough

Waterbody ID (WBID): CAR3051003020080616145053
County / counties: Santa Cruz
Regional Water Board: Regional Board 3 - Central Coast Region
Waterbody type: River & Stream
Condition category: Category 4a — TMDL completed
Integrated Report cycle: 2026

303(d) listings (1)

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
Indicator BacteriaPathogens	81150	List on 303(d) list (being addressed by USEPA approved TMDL)	Original	5B — Addressed by USEPA-approved TMDL	Watsonville Slough Pathogen	—

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: CAR3051003020080616145053
CALWNUM: 3305.100301, 3305.100303
WBD code: 180600020804
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.

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Watershed: —
Assessed size: 3.01 Miles

Derived facility associations

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

Derived

Watsonville · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

A&I Transport Inc

Watsonville · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Watsonville · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

AGRON Bioenergy

Watsonville · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

American Medical Response West

Watsonville · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Watsonville · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Watsonville · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Ballenger Spar Systems Inc

Watsonville · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Watsonville · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Coast Auto Supplies Dism Inc

Watsonville · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Coastal Manufacturing

Watsonville · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Watsonville · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Del Mar Food Prod Corp

Watsonville · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Del Mar Seafoods Inc

Watsonville · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Watsonville · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Watsonville · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Fabrication Effects Inc

Watsonville · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

FedEx Ground ZSLI

Watsonville · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Finesse Mills LLC

Watsonville · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Granite Rock Co Watsonville Co

Watsonville · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Greenwaste Recovery Inc

Watsonville · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Icarus Fermentation LLC

Watsonville · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Watsonville · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Lakeside Organic Gardens

Watsonville · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Larges Metal Fabrication Incorporate

Watsonville · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Marinos Automotive Machine Shop

Freedom · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Millers Transfer and Storage Company

Watsonville · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Monterey Bay Cast Stone

Watsonville · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Watsonville · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Watsonville · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

new west cooling co

Watsonville · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Pacific Continental Truss - Watsonville Office

Watsonville · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Pack Fresh Processors

Watsonville · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Pajaro Valley Cold Storage

Watsonville · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Pajaro valley fabrication

Watsonville · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

REACH 044 Watsonville CA

Watsonville · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Reach Medical Air Services LLC

Watsonville · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

S Martinelli Co

Watsonville · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

S Martinelli Co

Watsonville · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

SAGE INSTRUMENTS INC

Watsonville · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Santa Cruz Cider Company

Watsonville · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Santa Cruz Cnty Buena Vista La

Watsonville · Notice of Intent · 0.46 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Santa Cruz Pet Naturals

Watsonville · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Schmid Thermal Systems

Watsonville · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Watsonville · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Southern Counties Lubricants Watsonville

Watsonville · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Specialized Aviation LLC

Watsonville · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Specialized Helicopters

Watsonville · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Specialized Helicopters

Watsonville · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Watsonville · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

StorageMart 2470

Watsonville · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Watsonville · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

The Slough Brewing Collective

Watsonville · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

TruFocus Corporation

Watsonville · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Watsonville · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Watsonville - Freedom Blvd (Site 0144)

Watsonville · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Watsonville Airport Business Center

Watsonville · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Watsonville Airport Business Center

Watsonville · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Watsonville Bin

Watsonville · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Watsonville City Airport

Watsonville · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Watsonville Landfill

Watsonville · Notice of Intent · 0.73 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Watsonville Municipal Ser Cen

Watsonville · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Westek Electronics Inc

Watsonville · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

WESTLAKE TRANSPORT INC

Watsonville · 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.