San Diego Creek Reach 1

Waterbody ID (WBID): CAR8011100019990211131732
County / counties: Orange
Regional Water Board: Regional Board 8 - Santa Ana Region
Waterbody type: River & Stream
Condition category: Category 5 — 303(d) listed, TMDL required
Integrated Report cycle: 2026

303(d) listings (12)

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
Benthic Community EffectsOther Cause	153773	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
BifenthrinPesticides	132636	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Medium
DDT (Dichlorodiphenyltrichloroethane)Pesticides	149257	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)	Revised	5B — Addressed by USEPA-approved TMDL	Newport Bay Watershed Organochlorine Compounds TMDL	—
Indicator BacteriaPathogens	149171	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
MalathionPesticides	154750	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
NitrogenNutrients	150906	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Medium
NutrientsNutrients	67999	List on 303(d) list (being addressed by USEPA approved TMDL)	Original	5B — Addressed by USEPA-approved TMDL	Newport Bay Watershed Nutrient TMDL	—
PyrethroidsPesticides	132635	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Medium
Sedimentation/SiltationSediment	68050	List on 303(d) list (being addressed by USEPA approved TMDL)	Original	5B — Addressed by USEPA-approved TMDL	Newport Bay Watershed Sediment TMDL	—
SeleniumMetals	68215	List on 303(d) list (TMDL required list)	Original	5A — TMDL still required	—	Medium
ToxaphenePesticides	73784	List on 303(d) list (being addressed by USEPA approved TMDL)	Original	5B — Addressed by USEPA-approved TMDL	Newport Bay Watershed Organochlorine Compounds TMDL	—
ToxicityTotal Toxics	132633	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)	Revised	5B — Addressed by USEPA-approved TMDL	Newport Bay Watershed Diazinon/Chlorpyrifos TMDLs	—

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, 10:57 PM UTC
Waterbody ID: CAR8011100019990211131732
CALWNUM: 4801.11
WBD code: 180702040102, 180702040103
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: 8.63 Miles

Derived facility associations

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

Derived

3M Irvine Dental

Irvine · Notice of Intent

derived_watershed_association