Five Mile Slough (Alexandria Place to Fourteen Mile Slough; in Delta Waterways, eastern portion)

Waterbody ID (WBID): CAR5440000019990127160243
County / counties: San Joaquin
Regional Water Board: Regional Board 5 - Central Valley 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 / stressor	Decision ID	Final listing decision	Decision status	TMDL requirement status	TMDL project	TMDL priority
ChlorpyrifosPesticides	91966	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)	Original	5B — Addressed by USEPA-approved TMDL	Delta Diazinon and Chlorpyrifos Project	—
DiazinonPesticides	92071	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)	Original	5B — Addressed by USEPA-approved TMDL	Delta Diazinon and Chlorpyrifos Project	—
Indicator BacteriaPathogens	71735	List on 303(d) list (being addressed by USEPA approved TMDL)	Original	5B — Addressed by USEPA-approved TMDL	Stockton Area Sloughs and Rivers - Pathogens	—
Organic Enrichment/Low Dissolved OxygenNutrients	77691	Do Not Delist from 303(d) list (TMDL required list)	Original	5A — 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: Aug 21, 2026, 12:44 AM UTC
Waterbody ID: CAR5440000019990127160243
CALWNUM: 6544
WBD code: 180400030504
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: 1.66 Miles

Derived facility associations

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

Derived

Alco Iron Metals

Stockton · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Ladd Marina

Stockton · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Pacific Boat Services

Stockton · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Stockton Steel

Stockton · 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.