Klamath River HU, Shasta River HA
2026 303(d) list Waterbody ID CAR1055000119990528113804 River & Stream Region 1 · North Coast
At a glance
- 2026 listing Evidence: State-published
- On the 2026 303(d) list · 8 Appendix A decisions
- Category 5: a TMDL is required
- What a listing means
- Pollutants and stressors
- 8 pollutants in 5 Appendix A categories
- Metals (1) · Nutrients (2) · Other Cause (3) · Pathogens (1) · SALINITY/TOTAL DISSOLVED SOLIDS/CHLORIDES/SULFATES (1)
- Listing decisions
- TMDL information Evidence: State-published
- 8 decisions with a TMDL requirement status; 3 name a TMDL project
- Status codes as published: 5A, 5B
- TMDL details
- Industrial stormwater facilities
- 0 report it as their receiving water Evidence: identification corroborated
- 36 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
- 8
- 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
- 1 — North Coast
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 |
|---|---|---|---|---|---|---|
| Aluminum | Metals | 5 | Do Not Delist from 303(d) list (TMDL required list) | Revised | A Source Unknown | 74204 |
Nutrients (2 decisions)
| Pollutant | Pollutant category | Category | Final listing decision | Decision status | Sources | Decision ID |
|---|---|---|---|---|---|---|
| Organic Enrichment/Low Dissolved Oxygen | Nutrients | 5 | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL) | Revised | Agriculture-irrigation tailwater Agriculture-storm runoff Dairies Dam Construction Flow Alteration/Regulation/Modification Habitat Modification Hydromodification Minor Municipal Point Source-dry and/or wet weather discharge | 78845 |
| Oxygen, Dissolved | Nutrients | 5 | List on 303(d) list (being addressed by USEPA approved TMDL) | Revised | Agriculture-irrigation tailwater Agriculture-storm runoff Dairies Dam Construction Flow Alteration/Regulation/Modification Habitat Modification Hydromodification Minor Municipal Point Source-dry and/or wet weather discharge | 157122 |
Other Cause (3 decisions)
| Pollutant | Pollutant category | Category | Final listing decision | Decision status | Sources | Decision ID |
|---|---|---|---|---|---|---|
| Benthic Community Effects | Other Cause | 5 | List on 303(d) list (TMDL required list) | Revised | A Source Unknown | 169301 |
| pH | Other Cause | 5 | List on 303(d) list (TMDL required list) | Revised | A Source Unknown | 155237 |
| Temperature, water | Other Cause | 5 | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL) | Revised | Agriculture-irrigation tailwater Flow Alteration/Regulation/Modification Habitat Modification Removal of Riparian Vegetation | 157124 |
Pathogens (1 decision)
| Pollutant | Pollutant category | Category | Final listing decision | Decision status | Sources | Decision ID |
|---|---|---|---|---|---|---|
| Indicator Bacteria | Pathogens | 5 | List on 303(d) list (TMDL required list) | Revised | A Source Unknown | 162992 |
SALINITY/TOTAL DISSOLVED SOLIDS/CHLORIDES/SULFATES (1 decision)
| Pollutant | Pollutant category | Category | Final listing decision | Decision status | Sources | Decision ID |
|---|---|---|---|---|---|---|
| Specific Conductivity | SALINITY/TOTAL DISSOLVED SOLIDS/CHLORIDES/SULFATES | 5 | List on 303(d) list (TMDL required list) | Revised | A Source Unknown | 163032 |
TMDL information Evidence: State-published
| Pollutant | TMDL requirement status | TMDL project | Priority | USEPA approval of TMDL | Expected attainment |
|---|---|---|---|---|---|
| Aluminum | 5A | — | Low | — | — |
| Benthic Community Effects | 5A | — | Low | — | — |
| Indicator Bacteria | 5A | — | Low | — | — |
| Organic Enrichment/Low Dissolved Oxygen | 5B | Shasta River DO & Temperature | — | 2007-01-26 | — |
| Oxygen, Dissolved | 5B | Shasta River DO & Temperature | — | 2007-01-26 | — |
| pH | 5A | — | Low | — | — |
| Specific Conductivity | 5A | — | Low | — | — |
| Temperature, water | 5B | Shasta River DO & Temperature | — | 2007-01-26 | — |
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
- Eddy Creek-Shasta River 180102070101
- Lake Shastina-Shasta River 180102070104
- Middle Little Shasta River 180102070303
- Lower Little Shasta River 180102070304
- Grass Lake 180102070401
- Spring Creek-Hart Creek 180102070404
- Big Springs Creek-Shasta River 180102070408
- Steamboat Lake-Shasta River 180102070410
- Oregon Slough 180102070501
- Bunton Hollow Creek-Shasta River 180102070503
Overlapping the waterbody's shape Evidence: spatial
- Ash Creek-Klamath River 180102060802
- Eddy Creek-Shasta River 180102070101 also published
- Boles Creek-Shasta River 180102070102
- Carrick Creek 180102070103
- Lake Shastina-Shasta River 180102070104 also published
- Upper Willow Creek 180102070201
- Lower Willow Creek 180102070202
- Upper Little Shasta River 180102070301
- Davis Gulch 180102070302
- Middle Little Shasta River 180102070303 also published
- Lower Little Shasta River 180102070304 also published
- Grass Lake 180102070401 also published
- North Gate 180102070402
- The Whaleback-Sheep Rock 180102070403
- Spring Creek-Hart Creek 180102070404 also published
- Whitney Creek 180102070405
- Juniper Flat 180102070406
- Parks Creek 180102070407
- Big Springs Creek-Shasta River 180102070408 also published
- Julien Creek 180102070409
- Steamboat Lake-Shasta River 180102070410 also published
- Oregon Slough 180102070501 also published
- Yreka Creek 180102070502
- Bunton Hollow Creek-Shasta River 180102070503 also published
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.
| Facility | WDID | Status | Distance | Map |
|---|---|---|---|---|
| Yreka Solid Waste Disposal | 1 47I005456 | Terminated | 13 m | map |
| Oberlin Road Transfer Station | 1 47I022665 | Active | 20 m | map |
| yreka transit mix inc | 1 47I024546 | Terminated | 31 m | map |
| MT SHASTA AMBULANCE SERVIC INC | 1 47NNA001488 | NONA Submitted | 33 m | map |
| Hi Ridge Lumber | 1 47I005403 | Terminated | 38 m | map |
| SW Maintenance Corp Concrete Division | 1 47I029801 | Active | 63 m | map |
| Graystone Quarry | 1 47I013982 | Terminated | 63 m | map |
| Mark Crawford Logging | 1 47I024806 | Active | 67 m | map |
| Bjorn Onarheim Trucking | 1 47I012982 | Terminated | 77 m | map |
| UPS Yreka CAYRE | 1 47I011095 | Active | 89 m | map |
| Yreka Transfer Recycling Inc | 1 47I024614 | Active | 100 m | map |
| Fruit Growers Yreka Division | 1 47I024635 | Terminated | 109 m | map |
| City of Yreka | 1 47I005457 | Active | 130 m | map |
| Shasta Forest Products Inc | 1 47I010455 | Active | 138 m | map |
| Oberlin Road Recycle | 1 47I030099 | Active | 145 m | map |
| Weed Mini Storage | 1 47NNA002804 | NONA Submitted | 149 m | map |
| Nor Cal Products Inc | 1 47I027348 | Active | 183 m | map |
| Siskiyou County Disposal Company LLC | 1 47NNA003617 | NONA Submitted | 185 m | map |
| Bruces Towing Siskiyou LLC | 1 47I030140 | Active | 185 m | map |
| Bruces Towing Radiator Dismantling | 1 47I021479 | Terminated | 189 m | map |
| Yreka Auto Dismantling & Towing Inc | 1 47I022168 | Terminated | 199 m | map |
| Shasta Valley Asphalt | 1 47I019283 | Active | 235 m | map |
| Bruces Towing of Yreka Inc | 1 47I008010 | Terminated | 237 m | map |
| Bruces Towing of Yreka Inc | 1 47I019963 | Terminated | 237 m | map |
| Timber Prod Co | 1 47I010676 | Active | 303 m | map |
| Pacific States Treating | 1 47I031714 | Active | 307 m | map |
| Scott Valley Builders | 1 47I006519 | Terminated | 313 m | map |
| Rick Evans Transportation Inc | 1 47I024553 | Active | 320 m | map |
| Williams Pit | 1 47IN607798 | No Action Required | 360 m | map |
| Williams Pit | 1 47I030374 | Terminated | 361 m | map |
| Williams Pit | 1 47I031737 | Active | 361 m | map |
| lynn and coe | 1 47I025781 | Active | 438 m | map |
| Black Butte Auto Dismantler | 1 47I014818 | Active | 546 m | map |
| Mountain Ready Mix | 1 47I028587 | Active | 601 m | map |
| west pit | 1 47I025445 | Active | 603 m | map |
| Roseburg | 1 47I021433 | Active | 604 m | map |
36 facilities, nearest first.
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.