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Waterbody profile

Official Water Board record · 2026 cycle

Segunda Deshecha Creek

Waterbody ID (WBID)
CAR9013000020010924101553
County / counties
Orange
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 (8)

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
Benthic Community EffectsOther Cause126469Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
Indicator BacteriaPathogens85333List on 303(d) list (TMDL required list)Original5A TMDL still requiredLow
MalathionPesticides86561List on 303(d) list (TMDL required list)Original5A TMDL still requiredLow
NitrogenNutrients87213List on 303(d) list (TMDL required list)Original5A TMDL still requiredLow
PhosphorusNutrients70701Do Not Delist from 303(d) list (TMDL required list)Original5A TMDL still requiredLow
SeleniumMetals76433List on 303(d) list (TMDL required list)Original5A TMDL still requiredLow
ToxicityTotal Toxics78224Do Not Delist from 303(d) list (TMDL required list)Original5A TMDL still requiredLow
TurbiditySediment70702Do Not Delist from 303(d) list (TMDL required list)Original5A 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
Aug 21, 2026, 12:44 AM UTC
Waterbody ID
CAR9013000020010924101553
CALWNUM
90130000
Geometry
Official Water Board GIS (CA_WATERBOARDS_GIS_FINAL_2026)

Location

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

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Watershed
Assessed size
3.39 Miles

Derived facility associations

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

Derived
Kelcourt Plastics

San Clemente · Notice of Intent · 0.43 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Robertsons Ready Mix San Cleme

San Clemente · Notice of Intent · 0.09 km away

derived_receiving_water

Derived by California Stormwater Intelligence

San Clemente City

San Clemente · Notice of Intent · 0.12 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.