San Diego River (Lower)

Waterbody ID (WBID): CAR9071100020011025101606
County / counties: San Diego
Regional Water Board: Regional Board 9 - San Diego Region
Waterbody type: River & Stream
Condition category: Category 5 — 303(d) listed, TMDL required
Integrated Report cycle: 2026

303(d) listings (16)

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	145056	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
BifenthrinPesticides	111918	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
ChlordanePesticides	111870	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
ChlorideSALINITY/TOTAL DISSOLVED SOLIDS/CHLORIDES/SULFATES	125491	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
ColorNuisance	125492	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
CyfluthrinPesticides	111928	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
CypermethrinPesticides	144954	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
Indicator BacteriaPathogens	127657	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)	Revised	5B — Addressed by USEPA-approved TMDL	Bacteria Impaired Waters I (creeks and beach shorelines)	—
NitrogenNutrients	132043	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
Oxygen, DissolvedNutrients	111896	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
PermethrinPesticides	130294	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
PhosphorusNutrients	111900	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
PyrethroidsPesticides	144953	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
Total Dissolved SolidsSALINITY/TOTAL DISSOLVED SOLIDS/CHLORIDES/SULFATES	125496	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
ToxicityTotal Toxics	111907	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
TurbiditySediment	111908	List on 303(d) list (TMDL required list)	Revised	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: CAR9071100020011025101606
CALWNUM: 4906.700000, 4906.800000, 4907.110000, 4907.120000, 4907.150000, 4907.310000
WBD code: 180703040505, 180703040703, 180703040705
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: 28.96 Miles

Derived facility associations

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

Derived

74Weld

El Cajon · No Exposure Certification

derived_watershed_association