Salinas River (upper, confluence of Nacimiento River to Santa Margarita Reservoir)

Waterbody ID (WBID): CAR3098117720020319112226
County / counties: Monterey, San Luis Obispo
Regional Water Board: Regional Board 3 - Central Coast 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	131891	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
ChlorideSALINITY/TOTAL DISSOLVED SOLIDS/CHLORIDES/SULFATES	83883	Do Not Delist from 303(d) list (TMDL required list)	Original	5A — TMDL still required	—	Low
Oxygen, DissolvedNutrients	108870	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
pHOther Cause	108871	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
SodiumSALINITY/TOTAL DISSOLVED SOLIDS/CHLORIDES/SULFATES	77887	Do Not Delist from 303(d) list (TMDL required list)	Original	5A — TMDL still required	—	Low
ToxicityTotal Toxics	108875	List on 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, 10:56 PM UTC
Waterbody ID: CAR3098117720020319112226
CALWNUM: 3309.811302, 3309.811303, 3309.811305, 3309.811306, 3309.811402, 3309.811403, 3309.811404, 3309.811405, 3309.811406, 3309.811407, (Total Count: 21)
WBD code: 180600040410, 180600050104, 180600050203, 180600050205, 180600050307, 180600050403, 180600050404, 180600050405, 180600050407, 180600050801, (Total Count: 11)
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.

Loading map…

Watershed: —
Assessed size: 49.83 Miles

Facilities with an NAL exceedance for a listed pollutant (5)

Geographically associated industrial stormwater facilities whose reported results exceeded an Industrial General Permit Numeric Action Level for a pollutant this waterbody is listed for.

Derived

CA Army Nat Guard3 27I011909

pH · most recent exceedance RY 2015 · association: derived receiving water

Courtside Cellars3 40I025643

pH · most recent exceedance RY 2025 · association: derived receiving water

My Favorite Neighbor Winery3 40I030108

pH · most recent exceedance RY 2023 · association: derived watershed association

Transportation Yard3 40I018574

pH · most recent exceedance RY 2020 · association: derived nearby in watershed

Trinchero Central Coast Winery3 40I027201

pH · most recent exceedance RY 2021 · association: derived watershed association

This is derived co-occurrence between a calculated NAL comparison and the official 303(d) listing for this waterbody. An NAL exceedance triggers Exceedance Response Actions under the permit; it is not a violation and does not establish that any facility caused or contributed to this impairment.

Derived facility associations

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

Derived

A 1 Metals & Auto Salvage Inc

Paso Robles · Notice of Intent · 0.62 km away

derived_nearby_in_watershed