Mad River HU, Mad River
2026 303(d) list Waterbody ID CAR1091001119980706155140 River & Stream Region 1 · North Coast
At a glance
- 2026 listing Evidence: State-published
- On the 2026 303(d) list · 6 Appendix A decisions
- Category 5: a TMDL is required
- What a listing means
- Pollutants and stressors
- 6 pollutants in 4 Appendix A categories
- Metals (1) · Other Cause (1) · SALINITY/TOTAL DISSOLVED SOLIDS/CHLORIDES/SULFATES (1) · Sediment (3)
- Listing decisions
- TMDL information Evidence: State-published
- 6 decisions with a TMDL requirement status; 2 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
- 42 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
- 6
- 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
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)
| 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 | 168865 |
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 | 155280 |
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 | 163039 |
Sediment (3 decisions)
| Pollutant | Pollutant category | Category | Final listing decision | Decision status | Sources | Decision ID |
|---|---|---|---|---|---|---|
| Sediment | Sediment | 5 | List on 303(d) list (being addressed by USEPA approved TMDL) | Revised | Flow Alteration/Regulation/Modification Removal of Riparian Vegetation | 168866 |
| Sedimentation/Siltation | Sediment | 5 | List on 303(d) list (being addressed by USEPA approved TMDL) | Original | Flow Alteration/Regulation/Modification Removal of Riparian Vegetation | 69622 |
| Turbidity | Sediment | 5 | Do Not Delist from 303(d) list (TMDL required list) | Revised | A Source Unknown | 157189 |
TMDL information Evidence: State-published
| Pollutant | TMDL requirement status | TMDL project | Priority | USEPA approval of TMDL | Expected attainment |
|---|---|---|---|---|---|
| Aluminum | 5A | — | Low | — | — |
| Sediment | 5B | Mad River | — | 2007-12-21 | — |
| Sedimentation/Siltation | 5B | Mad River | — | 2007-12-21 | — |
| Specific Conductivity | 5A | — | Low | — | — |
| Temperature, water | 5A | — | Low | — | — |
| Turbidity | 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
- Pilot Creek 180101020301
- Bear Creek-Mad River 180101020302
- Bug Creek-Mad River 180101020401
- Boulder Creek 180101020402
- Blue Slide Creek-Mad River 180101020403
- Canon Creek 180101020404
- North Fork Mad River 180101020405
- Maple Creek-Mad River 180101020406
- Lindsay Creek 180101020407
- Mill Creek-Mad River 180101020408
Overlapping the waterbody's shape Evidence: spatial
- Lost Creek-Mad River 180101020201
- Barry Creek-Mad River 180101020202
- Ruth Lake-Mad River 180101020203
- Pilot Creek 180101020301 also published
- Bear Creek-Mad River 180101020302 also published
- Bug Creek-Mad River 180101020401 also published
- Boulder Creek 180101020402 also published
- Blue Slide Creek-Mad River 180101020403 also published
- Canon Creek 180101020404 also published
- North Fork Mad River 180101020405 also published
- Maple Creek-Mad River 180101020406 also published
- Lindsay Creek 180101020407 also published
- Mill Creek-Mad River 180101020408 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 |
|---|---|---|---|---|
| Kernen Construction Glendale Yard | 1 12I017319 | Active | 50 m | map |
| Glendale Processing Plant | 1 12I019289 | Active | 80 m | map |
| Mercer Fraser Essex | 1 12I019992 | Active | 95 m | map |
| Hatchery Road Site | 1 12I020030 | Active | 100 m | map |
| Blue Rock Quarry No 1 | 1 53I029998 | Active | 116 m | map |
| Mad River Brewing Company | 1 12NEC001161 | Active | 146 m | map |
| Calgon Carbon Corp | 1 12I007337 | Terminated | 146 m | map |
| Blue Lake Power, LLC | 1 12I021571 | Terminated | 158 m | map |
| Samoa Pulp Mill | 1 12I022092 | Terminated | 177 m | map |
| Canon Creek Quarry | 1 12I029586 | Active | 182 m | map |
| Canon Creek Quarry | 1 12NNA001908 | No Action Required | 182 m | map |
| GLJ North Yard | 1 12I030679 | Active | 190 m | map |
| California Redwood Company | 1 12I023850 | Terminated | 193 m | map |
| Jacksonhill Rnch Rock Quarry | 1 12I018790 | Terminated | 205 m | map |
| GLJ South Yard | 1 12I030680 | Terminated | 214 m | map |
| Morris Logging | 1 12I031203 | Active | 215 m | map |
| Almquist Lumber Company | 1 12I025714 | Active | 222 m | map |
| Korbel Sawmill | 1 12I026913 | Active | 223 m | map |
| Pacific States Sukut P31 Joint Venture | 1 53I029086 | Terminated | 224 m | map |
| Blue Rock Quarry No 2 | 1 53I029999 | Active | 226 m | map |
| Blue Lake Roundstock Company | 1 12I024589 | Terminated | 239 m | map |
| Boyd Road Asphalt Plant | 1 12I029828 | Active | 254 m | map |
| Royal Gold LLC | 1 12I025790 | Active | 311 m | map |
| Humboldt Organic Solutions | 1 12I030241 | Active | 397 m | map |
| Mad River Hardwood Company INC | 1 12I029270 | Terminated | 400 m | map |
| Aracta Readymix Inc | 1 12I016528 | Terminated | 404 m | map |
| Eureka Ready Mix Concrete Co | 1 12I017241 | Active | 404 m | map |
| Wes Green Landscape Materials | 1 12I025338 | Terminated | 442 m | map |
| Arcata Facility | 1 12I017636 | Terminated | 449 m | map |
| Russ Quarry | 1 12I029585 | Active | 506 m | map |
| Russ Pit | 1 12NNA001910 | No Action Required | 506 m | map |
| Humboldt Kush Company | 1 12NNA003476 | NONA Submitted | 554 m | map |
| FedEx Freight Arcata | 1 12I015818 | Active | 665 m | map |
| Bettendorf Trucking | 1 12I001458 | Terminated | 700 m | map |
| Bettendorf Enterprises | 1 12I023009 | Active | 700 m | map |
| Ford Ranch Rock Quarries | 1 12I023164 | Active | 807 m | map |
| VPPS Arcata Cardlock | 1 12NNA001761 | NONA Submitted | 824 m | map |
| Korbel Woodwaste Disposal Site | 1 12NEC002952 | Active | 826 m | map |
| Kokatat Inc | 1 12NEC003745 | Active | 892 m | map |
| Arcata Forest Products | 1 12I025053 | Terminated | 920 m | map |
| Britt Lumber Co Inc | 1 12I000979 | Terminated | 924 m | map |
| Liscomb Hill Quarry | 1 12I022349 | Active | 963 m | map |
42 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.