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Waterbody profile

Official Water Board record · 2026 cycle

Big Chico Creek (Butte and Tehama Counties)

Waterbody ID (WBID)
CAR5204000020020610133629
County / counties
Butte, Tehama
Regional Water Board
Regional Board 5 - Central Valley Region
Waterbody type
River & Stream
Condition category
Category 5 — 303(d) listed, TMDL required
Integrated Report cycle
2026

303(d) listings (9)

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
BifenthrinPesticides170962Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
ChromiumMetals134827Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
MercuryMetals145012Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
NickelMetals134820Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
Nitrogen, ammonia (Total Ammonia)Nutrients148519List on 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
Oxygen, DissolvedNutrients146564Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
pHOther Cause134821Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
PyrethroidsPesticides170961Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
ToxicityTotal Toxics146565Do Not Delist from 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
CAR5204000020020610133629
CALWNUM
5504.200002, 5509.140101, 5509.140102, 5509.140103, 5509.140201, 5509.140202, 5520.400001
WBD code
180201570501, 180201570502, 180201570503, 180201570604, 180201570704
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
56.25 Miles

Derived facility associations

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

Derived
A A Concrete Supply Chico

Chico · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Asbury Environmental Services Chico II LLC

Chico · Notice of Intent · 0.70 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Olson Meat Company

Orland · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Orland Plant

Orland · Notice of Intent

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.