Stanislaus River, Lower

2026 303(d) list Waterbody ID CAR5353000019980817151834 River & Stream Region 5 · Central Valley

At a glance

2026 listing Evidence: State-published: On the 2026 303(d) list · 3 Appendix A decisions; Category 5: a TMDL is required; What a listing means
Pollutants and stressors: 3 pollutants in 3 Appendix A categories; Metals (1) · Other Cause (1) · Total Toxics (1); Listing decisions
TMDL information Evidence: State-published: 3 decisions with a TMDL requirement status; Status codes as published: 5A; TMDL details
Regional Water Board: Region 5 · Central Valley; River & Stream · Map
Industrial stormwater facilities: 0 report it as their receiving water Evidence: identification corroborated; 37 within 1 km Evidence: geographic proximity; Neither count establishes a discharge · Facilities

What a 303(d) listing means

The Clean Water Act section 303(d) list names waters that do not meet water quality standards for one or more pollutants or stressors. California publishes it in the Integrated Report; this page shows the 2026 decisions from Appendix A as published.

A listing describes the condition of the waterbody. It does not identify which sources cause the impairment, and it does not by itself place a requirement on any particular facility.
Listed waters do not all have the same status. The Integrated Report category says how an impairment is being addressed: 5, a TMDL is required; 4a, addressed by a USEPA-approved TMDL; 4b, addressed by other pollution control requirements; 4c, impairment not caused by a pollutant. This waterbody's decisions are in category 5.
TMDL requirement status values (such as 5A or 5B) are shown exactly as published in Appendix A.

2026 listing status Evidence: State-published

On the 2026 303(d) list: Yes
Appendix A decisions: 3
Integrated Report category: 5 (a TMDL is required)
Listing cycle: 2026
State Board adoption: 2026-02-03 (Resolution 2026-0005)
USEPA approval: not confirmed — submittal letter to USEPA published; no approval found on the report page (checked 2026-10-22)
Regional Water Board: 5 — Central Valley

Published by the State Water Resources Control Board (2026 California Integrated Report, Appendix A). Listing status is taken from Appendix A only. A listing describes the condition of this waterbody, not of any facility.

Location

Loading the waterbody shape…

Open this area on the statewide map · Browse impaired waters

Listing decisions and pollutants Evidence: State-published

Grouped by the Pollutant Category published in Appendix A. Pollutant names, categories and decisions are exactly as published.

Metals (1 decision)

Metals: Appendix A decisions
Pollutant	Pollutant category	Category	Final listing decision	Decision status	Sources	Decision ID
Mercury	Metals	5	Do Not Delist from 303(d) list (TMDL required list)	Revised	A Source Unknown	169302

Other Cause (1 decision)

Other Cause: Appendix A decisions
Pollutant	Pollutant category	Category	Final listing decision	Decision status	Sources	Decision ID
Temperature, water	Other Cause	5	Do Not Delist from 303(d) list (TMDL required list)	Revised	A Source Unknown	158858

Total Toxics (1 decision)

Total Toxics: Appendix A decisions
Pollutant	Pollutant category	Category	Final listing decision	Decision status	Sources	Decision ID
Toxicity	Total Toxics	5	Do Not Delist from 303(d) list (TMDL required list)	Revised	A Source Unknown	158859

TMDL information Evidence: State-published

TMDL information published for this waterbody
Pollutant	TMDL requirement status	TMDL project	Priority	USEPA approval of TMDL	Expected attainment
Mercury	5A	—	Low	—	—
Temperature, water	5A	—	Low	—	—
Toxicity	5A	—	Low	—	—

This is TMDL information for the waterbody. It does not establish that a TMDL applies to any particular facility. Facility-specific TMDL requirements recorded in SMARTS appear on facility pages and are not linked to this waterbody until reviewed.

HUC12 watersheds

Published with the listing Evidence: publisher-reported

None published.

Overlapping the waterbody's shape Evidence: spatial

Red Bridge Slough-San Joaquin River 180400030202
Wildcat Creek-Stanislaus River 180400100701
Rodden Creek-Stanislaus River 180400100702
Town of Oakdale-Stanislaus River 180400100703
Boscha Lake (Historical)-Stanislaus River 180400100706

Industrial stormwater facilities

Evidence: identification corroborated

Shows: the facility named this waterbody as its receiving water in SMARTS, and the name and the facility's location are consistent with it. Does not establish: a discharge pathway, a discharge of any pollutant, or a cause of the listing.

Evidence: geographic proximity

Shows: the facility's reported location is within 1 km of the waterbody's mapped shape. Does not establish: that the facility discharges to this waterbody, or any other relationship.

Report this waterbody as their receiving water Evidence: identification corroborated

No facility's reported receiving water is identified as this waterbody.

Within 1 km of a facility's reported location Evidence: geographic proximity

Spatial proximity only; discharge pathway not established. Being near this waterbody does not mean a facility discharges to it.

Facilities whose reported location is within 1 km of this waterbody
Facility	WDID	Status	Distance	Map
Riverside Truck Parts & Salvage Inc	5S50I026278	Terminated	54 m	map
KHALIL ABOUSOUD DBA RIVERSIDE TRUCK PARTS	5S50I026955	Terminated	54 m	map
Riverside truck & auto	5S50I028077	Terminated	77 m	map
Riverside Auto & Truck Inc	5S50I028253	Active	77 m	map
Riverside Truck Salvage & Tow	5S50I021926	Terminated	82 m	map
Riverside Truck Parts Salvage Tow LLC	5S50I024753	Terminated	88 m	map
OHE Sand and Gravel	5S50NNA003020	NONA Submitted	109 m	map
OHE Sand and Gravel	5S50IN607981	NOI Required	196 m	map
Recology Blossom Valley Organics North Modesto	5S50I026006	Terminated	404 m	map
Clean Planet Inc Modesto	5S50I031683	Active	474 m	map
Diamond Pet Foods	5S39NNA000592	NONA Submitted	558 m	map
Stanislaus Cheese	5S50NEC004227	Terminated	588 m	map
Yummy Industries LLC	5S50NEC008047	Active	588 m	map
ROCKING S DAIRY #1	5S50I014256	Terminated	603 m	map
ICS Online LLC	5S39NEC016031	Active	756 m	map
George Te Velde Dairy 1	5S50I013971	Terminated	776 m	map
George Te Velde Dairy 2	5S50I013972	Terminated	776 m	map
ROCKING S DAIRY #2	5S50I014257	Terminated	776 m	map
Thunderbolt Wood Treating	5S50I028660	Active	780 m	map
Munn & Perkins	5S39NNA000677	NONA Submitted	792 m	map
Val Martins Dairy	5S50I014373	Terminated	806 m	map
Ripon Energy	5S39NNA001068	NONA Submitted	810 m	map
Riverbank Recycling	5S50I024777	Terminated	819 m	map
Triple A Pallets Inc	5S50I027453	Terminated	832 m	map
Triple A Pallets Inc	5S50NEC014757	Active	832 m	map
Silgan Containers Manu Corp	5S50I000733	Terminated	833 m	map
Entekra	5S39I029028	Terminated	895 m	map
Lyru Engineering Incorporated	5S39NEC006029	Active	903 m	map
Nulaid Foods	5S39I028780	Active	913 m	map
riverbank recycling	5S50NNA002604	No Action Required	915 m	map
Grover Landscape Services Inc	5S50NNA003373	NONA Submitted	916 m	map
Jim Aartman Inc	5S39I020733	Terminated	936 m	map
Ruan Logistics Corporation	5S39I024501	Terminated	938 m	map
California Freight	5S39I026338	Active	938 m	map
NuCal Foods	5S39I028987	Active	944 m	map
Better Built Truss	5S39I029035	Active	991 m	map
New Highway Carrier	5S39I009353	Terminated	992 m	map

37 facilities, nearest first.

Sources and provenance

Sources behind this page
Information	Source	Retrieved
Watershed Boundary Dataset HU2 GeoPackages 15, 16, 18 (WBDHU12)	USGS	2026-10-22
2026 California Integrated Report, Appendix A: 2026 303(d) List (final)	SWRCB	2026-10-22
Final_2026_Rivers_and_Streams + Final_2026_Lakes_and_Reservoirs (FeatureServer 0)	SWRCB GIS	2026-10-22
SMARTS TMDL requirements	SMARTS	2026-10-21

Relationships computed 2026-10-22 (facility_huc12/1, proximity/1, receiving_water/2, tmdl_reference/1, waterbody_huc12_ovl/1, waterbody_huc12_pub/1).

Integrated Report categories: 5, a TMDL is required; 4a, addressed by a USEPA-approved TMDL; 4b, addressed by other pollution control requirements; 4c, impairment not caused by a pollutant.