← Impaired waters

Waterbody profile

Official Water Board record · 2026 cycle

Poso Slough

Waterbody ID (WBID)
CAR5412000020070511112656
County / counties
Fresno, Merced
Regional Water Board
Regional Board 5 - Central Valley Region
Waterbody type
River & Stream
Condition category
Category 4b — Other control measures expected to attain standards
Integrated Report cycle
2026

303(d) listings (1)

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
ToxicityTotal Toxics73470Do Not Delist from 303(d) list (being addressed with action other than TMDL)Revised5C Addressed by action other than a TMDL

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
CAR5412000020070511112656
CALWNUM
6541.2
WBD code
180400012001, 180400012005
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
14.51 Miles

Derived facility associations

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

Derived
Agromin Bowles

Dos Palos · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

BWC Firebaugh

Firebaugh · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Neil Jones Food Company dba TomaTek

Firebaugh · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Sun's International Corporation

Firebaugh · Notice of Non-Applicability

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.