California Stormwater Intelligence

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Waterbody profile

Official Water Board record · 2026 cycle

Los Coches Creek

Waterbody ID (WBID): CAR9071400020081210155144
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 (4)

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
Indicator BacteriaPathogens	127887	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
NitrogenNutrients	127615	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
PhosphorusNutrients	113484	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
SeleniumMetals	158372	Do Not Delist from 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: Sep 16, 2026, 10:57 PM UTC
Waterbody ID: CAR9071400020081210155144
CALWNUM: 4907.120000, 4907.140000
WBD code: 180703040703
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: 9.41 Miles

Derived facility associations

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

Derived

El Cajon · No Exposure Certification · 0.19 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Altech Machining Inc

Santee · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Aluminess Products

San Diego · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

El Cajon · No Exposure Certification · 0.28 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Artistic Marble Granite Inc

Santee · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Aymar Engineering

Santee · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Santee · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Bill Signs Trucking LLC

Lakeside · Notice of Intent · 0.77 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Blue Star Steel

Lakeside · Notice of Intent · 0.21 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

BORNEMAN TRUCKING INC

El Cajon · Notice of Intent · 0.06 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

C W Mcgrath Inc Tunnel Hill Gr

El Cajon · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

CALIFORNIA CRAFTED MARBLE

Santee · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

CALIFORNIA CRAFTED MARBLE

Santee · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

CM Manufacturing

Santee · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Computer Integrated Machining Inc

Santee · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Current Ways Inc

Santee · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Custom Aircraft Parts

El Cajon · Notice of Non-Applicability · 0.21 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Diamond Concrete Supply

Lakeside · Notice of Intent · 0.42 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

DM Miller Trucking Inc

El Cajon · Notice of Intent · 0.06 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

DS Fibertech Corporation

Santee · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

East County Ready Mix & Materials Corp

El Cajon · Notice of Intent · 0.03 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

El Cajon · Notice of Intent · 0.07 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

FORTIN RACING INC

El Cajon · No Exposure Certification · 0.37 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Santee · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Lakeside · Notice of Intent · 0.61 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Hanson Aggregates Channel Rd

Lakeside · Notice of Intent · 0.94 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Santee · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Johns Trucking Inc

Lakeside · Notice of Intent · 0.80 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

El Cajon · No Exposure Certification · 0.10 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Lakeside USD Pupil Trans

Lakeside · No Exposure Certification · 0.85 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Martinez Tile Granite

Lakeside Farms · Notice of Intent · 0.19 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

MAXIMA RACING OILS

Santee · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Oldcastle Precast Inc

Lakeside · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

PEDROZA READY MIX

El Cajon · Notice of Intent · 0.14 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Pepsi Beverages North America

Lakeside · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Quality Controlled Mfg Inc

Santee · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Quality Recycling Inc

Lakeside · Notice of Intent · 0.99 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Quality Recycling Inc

Lakeside · Notice of Intent · 0.50 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Quiroz Recycling

Santee · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Ricks Machine Shop

Santee · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Rust Sons Trucking

El Cajon · Notice of Intent · 0.12 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

San Diego Laser Cutting

Santee · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Santee - Mission Gorge Rd

Santee · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Santee - Woodside Ave (Site 1984)

Santee · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Santee Sch Dist Bus Mainten Fac

Santee · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Scantibodies Laboratory Inc

Santee · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

SoCal Machine Inc

El Cajon · Notice of Intent · 0.08 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

SoCal Truck Accessories & Equipment

Santee · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Southland Envelope Company

Lakeside · No Exposure Certification · 0.90 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Superior Ready Mix

Lakeside · Notice of Intent · 0.18 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Swift Powder Coat Inc

El Cajon · Notice of Intent · 0.19 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Sycamore Landfill

San Diego · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Terra Nova Technologies Inc

Santee · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Torres General Inc

Santee · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Alpine · Notice of Intent · 0.62 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Unique Drawer Boxes Incorporated dba Drawer Depot

El Cajon · No Exposure Certification · 0.23 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Santee · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Vortex Engineering LLC

Santee · No Exposure Certification

derived_watershed_association

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.