← Impaired waters

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 required—Low
Indicator BacteriaPathogens85333List on 303(d) list (TMDL required list)Original5A — TMDL still required—Low
MalathionPesticides86561List on 303(d) list (TMDL required list)Original5A — TMDL still required—Low
NitrogenNutrients87213List on 303(d) list (TMDL required list)Original5A — TMDL still required—Low
PhosphorusNutrients70701Do Not Delist from 303(d) list (TMDL required list)Original5A — TMDL still required—Low
SeleniumMetals76433List on 303(d) list (TMDL required list)Original5A — TMDL still required—Low
ToxicityTotal Toxics78224Do Not Delist from 303(d) list (TMDL required list)Original5A — TMDL still required—Low
TurbiditySediment70702Do Not Delist from 303(d) list (TMDL required list)Original5A — 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
Sep 16, 2026, 10:57 PM 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.

Loading map…
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.