California Stormwater Intelligence

← Impaired waters

Waterbody profile

Official Water Board record · 2026 cycle

Cottonwood Creek (San Marcos Creek watershed)

Waterbody ID (WBID): CAR9045100020011009142248
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 (6)

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	77016	List on 303(d) list (TMDL required list)	Original	5A — TMDL still required	—	Low
DDT (Dichlorodiphenyltrichloroethane)Pesticides	69170	Do Not Delist from 303(d) list (TMDL required list)	Original	5A — TMDL still required	—	Low
NitrogenNutrients	76247	List on 303(d) list (TMDL required list)	Original	5A — TMDL still required	—	Low
PhosphorusNutrients	77465	List on 303(d) list (TMDL required list)	Original	5A — TMDL still required	—	Low
SeleniumMetals	79331	List on 303(d) list (TMDL required list)	Original	5A — TMDL still required	—	Low
ToxicityTotal Toxics	87061	Do Not Delist from 303(d) list (TMDL required list)	Original	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: CAR9045100020011009142248
CALWNUM: 4904.510000, 4904.610000
WBD code: 180703030504
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: 1.24 Miles

Derived facility associations

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

Derived

2270 Camino Vida Roble Suite V

Carlsbad · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Abstract Ale Works LLC

Carlsbad · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Ace Welding And Fabrication Inc

Oceanside · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Advanced Honeycomb Technologies Corporation

Carlsbad · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

All Inclusive Solutions

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Carlsbad · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

American Innotek Inc

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Amigo Custom Screen Prints

Carlsbad · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Applied Composite Solutions Inc

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Avila Surfboards

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

B and J Rubber Products LLC

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Black Plague Brewing

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

BMW Precision Machining Inc

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Bravo Bells LLC

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Building 2 624 Garrison

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

cal kona marine inc

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Carlsbad · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

California Hot Sauce Solutions

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

California Sensor Corporaton

Carlsbad · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Calpex Plastics

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Car Sound Exhaust Inc

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Carlsbad Airport Storage

Carlsbad · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Carlsbad Self Storage LLC

Carlsbad · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Centricity Vision Inc

Carlsbad · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Chuao Chocolatier

Carlsbad · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Cisco Systems Inc Site CSB04

Carlsbad · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

City of Oceanside La Salina WWTP

Oceanside · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Clinicon Corporation

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Component Concepts LLC

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Coomber Craft Wines Oceanside

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Cottrell Machine

Carlsbad · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Crystal Dynamics Aquarium Mfg

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Dream Rides Auto Parts

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Dupaco Incorporated

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Edge Tech Manufacturing Inc

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

El Corazon Reclamation and Recycling

Oceanside · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Electro Mechanical Assembly Facility

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Elite Metal Finishing

Oceanside · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Emergency Storage LLC

Carlsbad · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Encina Wastewater Authority

Carlsbad · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Escondido Ready Mix

Oceanside · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

EZRvent LLC Oceanic

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

FedEx Ground ZOCE

Oceanside · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Genentech Inc Oceanside

Oceanside · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

GenMark Diagnostics

Carlsbad · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

GenMark Diagnostics

Carlsbad · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Gilead Sciences Inc

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Greenfield Fence Inc

Oceanside · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

GTR Enterprises Inc

Carlsbad · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Hexagon Manufacturing Intelligence Inc

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Hi Tech Electronic Manufacturing Corp

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Oceanside · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Hydro Check Systems Inc

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Industrial Strength Corp

Carlsbad · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Industrial Strength Corp

Carlsbad · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Integrated Fabrication

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Intuitive Racing Inc dba Dew Machine Tool

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Jordan and Company LLC

Carlsbad · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Kailani Surfboards

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

KAPAN KENT COMPANY INCORPORATED

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

KINETIC COMPOSITES INC

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Kinetics Noise Control

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

L F Industries Inc

Carlsbad · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Lees Metal Recycling LP

Vista · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

LEGACY MACHINING METHODS INC

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Little Oaks Winery LLC

Carlsbad · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

LL Printers Carlsbad LLC

Carlsbad · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Lunada Bay Concrete

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

machine tech racing engines

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Carlsbad · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Manzos Metal Works

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

McClellan Palomar

Carlsbad · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

McKenna Boiler Works Inc

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Metal Lighthouse Incorporated

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

MH Custom Printing

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Molecular Matrix Inc

Carlsbad · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Natel Engineering Company Inc

Carlsbad · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Natures Supplements Inc

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

North Star Sensors LLC

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Ocean Group Inc

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

oceanside ale works

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Oceanside Ready Mix

Oceanside · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Old School Iron Inc

Oceanside · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Olli Salumeria Americana LLC

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Orco Block Co Inc

Oceanside · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Palomar Airport Landfill

Carlsbad · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Precision Design & Fabricating Inc

Oceanside · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Precision One Medical

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Carlsbad · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Carlsbad · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Revolution Roasters Inc

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Reyes Coca Cola Bottling LLC

Oceanside · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

ROCUS USA CORP DBA NEON TECH INC

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Sadie Rose Baking Company

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Salis International Inc

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

San Dieguito UHSD

Encinitas · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Schuman Enterprises Inc

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Carlsbad · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

SenDx Medical Incorporated

Carlsbad · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Soulcraftboarding Inc

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

South O Brewing Company

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Sportsman Consulting LLC dba Vinmetrica

Carlsbad · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

St Moritz Bakery Inc

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Straight Six Group

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Strata Skin Sciences

Carlsbad · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Sumix Oceanside

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Carlsbad · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Thornton Technology

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Tri City Crating & Packing

Vista · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Trinity Woodworks Inc

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Tru Duct Sheet Metal Fabrication

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Turn Key Powertrain Inc

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Twisted Burl Woodshop

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Veridiam Allied Swiss

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Waste Management of California Inc

Oceanside · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Waste Management of North County

Oceanside · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Weiland Sliding Doors and Windows

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Westlake Royal Roofing LLC

Oceanside · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

whiskey yankee llc

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Whitlock Industries Inc

Oceanside · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Carlsbad · 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.