Tuolumne River, Lower (Don Pedro Reservoir to San Joaquin River)
2026 303(d) list Waterbody ID CAR5355000019980817143435 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
- Industrial stormwater facilities
- 2 report it as their receiving water Evidence: identification corroborated
- 101 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
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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)
| 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 | 169264 |
Other Cause (1 decision)
| 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 | 158868 |
Total Toxics (1 decision)
| 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 | 158869 |
TMDL information Evidence: State-published
| 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
- Lower White Lake-San Joaquin River 180400020503
- Big Creek-Tuolumne River 180400091206
- Peaslee Creek-Tuolumne River 180400091401
- Salter Gulch-Tuolumne River 180400091402
- Town of Riverdale Park-Tuolumne River 180400091403
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
| Facility | WDID | Status | Distance from reported location | Map |
|---|---|---|---|---|
| Antonini Enterprises LLC | 5S50I029521 | Active | 1.1 km | map |
| Diversified Machining & Fabrication | 5S50I029660 | Active | 1.7 km | map |
Receiving water reported by facility — waterbody identification corroborated by geographic evidence. 2 facilities.
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.
| Facility | WDID | Status | Distance | Map |
|---|---|---|---|---|
| G3 Enterprises Closure | 5S50NEC005019 | Active | 588 m | map |
| Universal Services Recycling Inc | 5S50I024375 | Active | 589 m | map |
| COUCHMAN FARMS | 5S50I014966 | Terminated | 591 m | map |
| Pacific Storage Company | 5S50NNA000630 | NONA Submitted | 595 m | map |
| Graham Packaging Company LP | 5S50I026325 | Active | 616 m | map |
| Sierra Design & Manufacturing LLC | 5S50NEC007798 | Active | 622 m | map |
| Southcorp Packaging | 5S50I006648 | Terminated | 623 m | map |
| Sierra Pacific Warehouse Group | 5S50NEC013909 | Active | 643 m | map |
| Lopes Trucking Service Inc | 5S50NNA002858 | NONA Submitted | 644 m | map |
| Gallo Glass | 5S50I002699 | Active | 647 m | map |
| Cedar Grove Warehouse | 5S50NEC014029 | Active | 650 m | map |
| Dawn Food Products Inc | 5S50I020095 | Terminated | 654 m | map |
| Modesto Transfer and Storage Inc | 5S50NNA000739 | NONA Submitted | 672 m | map |
| Residence | 5S50NNA001608 | NONA Submitted | 689 m | map |
| Foam Fabricators Inc | 5S50I026617 | Terminated | 704 m | map |
| Foam Fabricators Inc | 5S50NEC000765 | Terminated | 704 m | map |
| Gibson Homans Co | 5S50I001133 | Terminated | 706 m | map |
| CALIFORNIA AUTO PARTS & AUTO DISMANTLER INC | 5S50I026151 | Terminated | 711 m | map |
| CALIFORNIA AUTO PARTS & AUTO DISMANTLER INC | 5S50NEC012956 | Terminated | 711 m | map |
| CALIFORNIA AUTO PARTS & DISMANTLER | 5S50NEC013031 | Active | 711 m | map |
| California Auto Parts Connections and Dismantling LLC | 5S50I031352 | Active | 712 m | map |
| HS Auto Dismantle LLC | 5S50I024978 | Terminated | 742 m | map |
| MATRIX AUTO WRECKERS LLC | 5S50I027512 | Active | 742 m | map |
| AggrePlex of Modesto LLC | 5S50NEC014260 | Active | 743 m | map |
| Gallo Glass Company dba Halo Glass Recycling | 5S50I029614 | Active | 759 m | map |
| Storage Star Modesto | 5S50NNA002650 | NONA Submitted | 761 m | map |
| ADM SCI Specialty Commodities Inc | 5S50I024212 | Terminated | 764 m | map |
| GRACE MOVING COMPANY | 5S50NNA001347 | NONA Submitted | 765 m | map |
| Waterford Unified Transportation | 5S50I017924 | Active | 766 m | map |
| G3 Enterprises Finch Campus | 5S50I028117 | Active | 777 m | map |
| ADM Golden Golden Peanut Company LLC Modesto | 5S50NEC005390 | Terminated | 782 m | map |
| Pearl Crop Inc Modesto | 5S50I031709 | Active | 786 m | map |
| Stanislaus Geer | 5S50I000287 | Terminated | 788 m | map |
| AS Ammunition | 5S50NEC013028 | Active | 794 m | map |
| Seneca Food LLC | 5S50I020753 | Terminated | 810 m | map |
| Del Monte Foods Warehouse Number 11 | 5S50NEC001164 | Terminated | 823 m | map |
| Gilton Resource Recovery | 5S50I004773 | Active | 858 m | map |
| Modesto Irrigation District | 5S50I021056 | Terminated | 873 m | map |
| Amwest Inc | 5S50NNA003132 | NONA Submitted | 875 m | map |
| G3 3700 Finch Warehouse | 5S50NEC011679 | Active | 897 m | map |
| Silgan Containers Mfg Corp | 5S50I025500 | Terminated | 902 m | map |
| Silgan Containers Mfg Corp | 5S50NEC003304 | Active | 902 m | map |
| Alloy Wire Belt | 5S50I000209 | Terminated | 903 m | map |
| Alloy Wire Belt | 5S50I013737 | Terminated | 903 m | map |
| CSC MANUFACTURING INC | 5S50NEC008342 | Active | 917 m | map |
| Red Top Taxi | 5S50I012810 | Terminated | 934 m | map |
| Del Monte Foods Warehouse Number 10 | 5S50NEC001163 | Terminated | 958 m | map |
| Fastenal Company | 5S50I028597 | Active | 969 m | map |
| Premier Bakers Inc | 5S50I021875 | Terminated | 987 m | map |
| Flowers Baking Co of Modesto | 5S50I024527 | Active | 987 m | map |
Sources and provenance
| 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.