Rio De Santa Clara/Oxnard Drain No. 3

Waterbody ID (WBID): CAR4031100020000228150910
County / counties: Ventura
Regional Water Board: Regional Board 4 - Los Angeles Region
Waterbody type: River & Stream
Condition category: Category 5 — 303(d) listed, TMDL required
Integrated Report cycle: 2026

303(d) listings (14)

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
AmmoniaNutrients	98486	List on 303(d) list (TMDL required list)	Original	5A — TMDL still required	—	Low
ChemA (tissue)Pesticides	68555	List on 303(d) list (being addressed by USEPA approved TMDL)	Original	5B — Addressed by USEPA-approved TMDL	Rio de Santa Clara/Oxnard Drain #3 Pesticides and PCBs (8)	—
ChlordanePesticides	136468	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)	Revised	5B — Addressed by USEPA-approved TMDL	Rio de Santa Clara/Oxnard Drain #3 Pesticides and PCBs (8)	—
Chlordane (tissue)Pesticides	68506	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)	Original	5B — Addressed by USEPA-approved TMDL	Rio de Santa Clara/Oxnard Drain #3 Pesticides and PCBs (8)	—
DDD (Dichlorodiphenyldichloroethane)Pesticides	149788	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)	Revised	5B — Addressed by USEPA-approved TMDL	Rio de Santa Clara/Oxnard Drain #3 Pesticides and PCBs (8)	—
DDE (Dichlorodiphenyldichloroethylene)Pesticides	149789	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)	Revised	5B — Addressed by USEPA-approved TMDL	Rio de Santa Clara/Oxnard Drain #3 Pesticides and PCBs (8)	—
DDT (Dichlorodiphenyltrichloroethane)Pesticides	149790	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)	Revised	5B — Addressed by USEPA-approved TMDL	Rio de Santa Clara/Oxnard Drain #3 Pesticides and PCBs (8)	—
DDT (tissue)Pesticides	99586	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)	Original	5B — Addressed by USEPA-approved TMDL	Rio de Santa Clara/Oxnard Drain #3 Pesticides and PCBs (8)	—
Indicator BacteriaPathogens	150320	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
NitrogenNutrients	75809	List on 303(d) list (being addressed by USEPA approved TMDL)	Original	5B — Addressed by USEPA-approved TMDL	Calleguas Creek Nitrogen (1)	—
PCBs (Polychlorinated biphenyls)Toxic Organics	136479	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)	Revised	5B — Addressed by USEPA-approved TMDL	Rio de Santa Clara/Oxnard Drain #3 Pesticides and PCBs (8)	—
ToxaphenePesticides	136480	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)	Revised	5B — Addressed by USEPA-approved TMDL	Rio de Santa Clara/Oxnard Drain #3 Pesticides and PCBs (8)	—
Toxaphene (tissue)Pesticides	69859	Do Not Delist from 303(d) list (TMDL required list)	Original	5A — TMDL still required	—	Low
ToxicityTotal Toxics	99948	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)	Original	5B — Addressed by USEPA-approved TMDL	Rio de Santa Clara/Oxnard Drain #3 Pesticides and PCBs (8)	—

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: CAR4031100020000228150910
CALWNUM: 4408.11
WBD code: 180701030201
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: 1.94 Miles

Derived facility associations

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

Derived

501 Del Norte Blvd

Oxnard · Notice of Intent

derived_watershed_association