Grasslands Marshes

Waterbody ID (WBID): CAW5412000019990127152712
County / counties: Merced
Regional Water Board: Regional Board 5 - Central Valley Region
Waterbody type: Wetland, Freshwater
Condition category: Category 5 — 303(d) listed, TMDL required
Integrated Report cycle: 2026

303(d) listings (2)

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
Electrical ConductivitySALINITY/TOTAL DISSOLVED SOLIDS/CHLORIDES/SULFATES	70260	Do Not Delist from 303(d) list (TMDL required list)	Original	5A — TMDL still required	—	Low
SeleniumMetals	69360	List on 303(d) list (being addressed by USEPA approved TMDL)	Original	5B — Addressed by USEPA-approved TMDL	Grasslands Marshes Selenium 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: Aug 21, 2026, 12:44 AM UTC
Waterbody ID: CAW5412000019990127152712
CALWNUM: 6541.2
WBD code: 180400011304, 180400011305, 180400011306
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: 12508.13 Acres

Derived facility associations

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

Derived

City Taxi

Los Banos · Notice of Non-Applicability · 0.49 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Los Banos Mini Storage

Los Banos · Notice of Non-Applicability · 0.62 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.