← Impaired waters

Waterbody profile

Official Water Board record · 2026 cycle

Tijuana River

Waterbody ID (WBID)
CAR9111100019990208133940
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 (30)

Each row is one official listing decision from Appendix A of the Final 2026 California Integrated Report. Source terminology is preserved as published.

Pollutant / stressorDecision IDFinal listing decisionDecision statusTMDL requirement statusTMDL projectTMDL priority
AmmoniaNutrients127820List on 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
Ammonia (Unionized)Nutrients115522List on 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
Ammonia as NitrogenNutrients76720List on 303(d) list (TMDL required list)Original5A TMDL still requiredLow
Benthic Community EffectsOther Cause76951List on 303(d) list (TMDL required list)Original5A TMDL still requiredLow
BifenthrinPesticides112175List on 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
CadmiumMetals112157Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
ChlorpyrifosPesticides126834Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
ColorNuisance125510List on 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
CypermethrinPesticides144960List on 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
DiazinonPesticides112160Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
DichlorvosPesticides112161List on 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
EutrophicNutrients74679List on 303(d) list (TMDL required list)Original5A TMDL still requiredLow
Indicator BacteriaPathogens165377Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
Low Dissolved OxygenNutrients77817List on 303(d) list (TMDL required list)Original5A TMDL still requiredLow
MalathionPesticides86255List on 303(d) list (TMDL required list)Original5A TMDL still requiredLow
NitrogenNutrients127520List on 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
Oxygen, DissolvedNutrients112165List on 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
PermethrinPesticides130330List on 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
PesticidesPesticides76067List on 303(d) list (TMDL required list)Original5A TMDL still requiredLow
PhosphorusNutrients112168Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
PyrethroidsPesticides144959List on 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
Sedimentation/SiltationSediment77353List on 303(d) list (TMDL required list)Original5A TMDL still requiredLow
SeleniumMetals112169Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
SolidsOther Cause69841List on 303(d) list (TMDL required list)Original5A TMDL still requiredLow
Surfactants (MBAS)Toxic Organics76722List on 303(d) list (TMDL required list)Original5A TMDL still requiredLow
Synthetic OrganicsToxic Organics77084List on 303(d) list (TMDL required list)Original5A TMDL still requiredLow
Total Nitrogen as NNutrients76763List on 303(d) list (TMDL required list)Original5A TMDL still requiredLow
ToxicityTotal Toxics112171Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
TrashTrash165379Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
TurbiditySediment112172List on 303(d) list (TMDL required list)Revised5A TMDL still requiredLow

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
CAR9111100019990208133940
CALWNUM
4911.110000, 4911.120000
WBD code
180703050602
Geometry
Official Water Board GIS (CA_WATERBOARDS_GIS_FINAL_2026)

Location

Official 2026 Water Board geometry. Demonstration facility markers are shown for context only.

Loading map…
Watershed
Assessed size
7.3 Miles

Derived facility associations

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

Derived
Freddys Auto Wrecking

San Diego · Notice of Intent · 0.87 km away

derived_receiving_water

Derived by California Stormwater Intelligence

International Boundary and Water Commission

San Diego · Notice of Intent · 0.39 km away

derived_receiving_water

Derived by California Stormwater Intelligence

San Diego Imperial Valley Rr

San Diego · Notice of Intent · 1.00 km away

derived_receiving_water

Derived by California Stormwater Intelligence

South Bay Union School District

San Diego · Notice of Intent · 0.73 km away

derived_receiving_water

Derived by California Stormwater Intelligence

South Bay Water Reclamation Plant

San Diego · Notice of Intent · 0.63 km away

derived_receiving_water

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.