American River, Lower (Nimbus Dam to confluence with Sacramento River)
2026 303(d) list Waterbody ID CAR5192100019980813142021 River & Stream Region 5 · Central Valley
At a glance
- 2026 listing Evidence: State-published
- On the 2026 303(d) list · 11 Appendix A decisions
- Category 5: a TMDL is required
- What a listing means
- Pollutants and stressors
- 11 pollutants in 6 Appendix A categories
- Metals (1) · Other Cause (1) · Pathogens (1) · Pesticides (4) · Total Toxics (1) · Toxic Organics (3)
- Listing decisions
- TMDL information Evidence: State-published
- 11 decisions with a TMDL requirement status
- Status codes as published: 5A
- TMDL details
- Industrial stormwater facilities
- 0 report it as their receiving water Evidence: identification corroborated
- 50 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
- 11
- 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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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 |
|---|---|---|---|---|---|---|
| Mercury | Metals | 5 | Do Not Delist from 303(d) list (TMDL required list) | Revised | A Source Unknown | 153028 |
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 | 134696 |
Pathogens (1 decision)
| Pollutant | Pollutant category | Category | Final listing decision | Decision status | Sources | Decision ID |
|---|---|---|---|---|---|---|
| Indicator Bacteria | Pathogens | 5 | Do Not Delist from 303(d) list (TMDL required list) | Revised | A Source Unknown | 148725 |
Pesticides (4 decisions)
| Pollutant | Pollutant category | Category | Final listing decision | Decision status | Sources | Decision ID |
|---|---|---|---|---|---|---|
| Bifenthrin | Pesticides | 5 | Do Not Delist from 303(d) list (TMDL required list) | Revised | A Source Unknown | 146227 |
| Cyfluthrin | Pesticides | 5 | List on 303(d) list (TMDL required list) | Revised | A Source Unknown | 146234 |
| Cyhalothrin, Lambda | Pesticides | 5 | List on 303(d) list (TMDL required list) | Revised | A Source Unknown | 146236 |
| Pyrethroids | Pesticides | 5 | Do Not Delist from 303(d) list (TMDL required list) | Revised | A Source Unknown | 146215 |
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 | 146207 |
Toxic Organics (3 decisions)
| Pollutant | Pollutant category | Category | Final listing decision | Decision status | Sources | Decision ID |
|---|---|---|---|---|---|---|
| Benzo[b]fluoranthene | Toxic Organics | 5 | List on 303(d) list (TMDL required list) | Revised | A Source Unknown | 146125 |
| Chrysene (C1-C4) | Toxic Organics | 5 | List on 303(d) list (TMDL required list) | Revised | A Source Unknown | 146136 |
| PCBs (Polychlorinated biphenyls) | Toxic Organics | 5 | Do Not Delist from 303(d) list (TMDL required list) | Revised | A Source Unknown | 146199 |
TMDL information Evidence: State-published
| Pollutant | TMDL requirement status | TMDL project | Priority | USEPA approval of TMDL | Expected attainment |
|---|---|---|---|---|---|
| Benzo[b]fluoranthene | 5A | — | Low | — | — |
| Bifenthrin | 5A | — | Low | — | — |
| Chrysene (C1-C4) | 5A | — | Low | — | — |
| Cyfluthrin | 5A | — | Low | — | — |
| Cyhalothrin, Lambda | 5A | — | Low | — | — |
| Indicator Bacteria | 5A | — | Low | — | — |
| Mercury | 5A | — | Low | — | — |
| PCBs (Polychlorinated biphenyls) | 5A | — | Low | — | — |
| Pyrethroids | 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
- Upper American River 180201110201
- Lower American River 180201110202
- Natomas Main Drainage Canal-Sacramento River 180201610402
- Lake Greenhaven-Sacramento River 180201630701
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 |
|---|---|---|---|---|
| CUBESMART 225 | 5S34NNA001716 | NONA Submitted | 181 m | map |
| Arden Arcade Storage | 5S34NEC016130 | Active | 274 m | map |
| ALL DODGE TRUCK | 5S34I004980 | Active | 339 m | map |
| Martin Sprocket Gear | 5S34I004438 | Active | 352 m | map |
| Legacy Auto Dismantler | 5S34IN600510 | No Action Required | 416 m | map |
| Legacy Auto Dismantlers | 5S34NEC013785 | Active | 434 m | map |
| Elite Optical | 5S34NEC010933 | Active | 436 m | map |
| Sac City Landfill | 5S34I004477 | Active | 457 m | map |
| Bell Marine | 5S34I028217 | Active | 461 m | map |
| Bell Marine | 5S34IN604817 | Terminated | 461 m | map |
| California Tile & Granite Corp | 5S34I028036 | Terminated | 464 m | map |
| California Tile & Granite Corp | 5S34NEC007353 | Terminated | 464 m | map |
| California Tile & Granite Corp | 5S34I030142 | Terminated | 464 m | map |
| California Tile & Granite Corp | 5S34NEC013080 | Active | 464 m | map |
| FedEx SMFRT | 5S34I026311 | Active | 467 m | map |
| SDS AGENCY INC | 5S34NNA002579 | NONA Submitted | 545 m | map |
| ITRANSIT INC | 5S34NNA002691 | NONA Submitted | 545 m | map |
| Sierra Office Systems and Products Inc | 5S34NEC011221 | Active | 556 m | map |
| Starr Johnson Wines | 5S34NEC000361 | Terminated | 570 m | map |
| Fontaine Metal Prod | 5S34I012710 | Terminated | 613 m | map |
| ROWLETT MANUFACTURING & DESIGN INC | 5S34NEC009998 | Active | 652 m | map |
| JJ Pfister Distilling Company LLC | 5S34NEC013545 | Terminated | 656 m | map |
| Ebara Technologies | 5S34NEC000163 | Active | 661 m | map |
| JJ Pfister Distillling Company | 5S34NEC013175 | Terminated | 663 m | map |
| Matheson Holdings Sacramento | 5S34I005912 | Terminated | 679 m | map |
| RIVER CITY MILLWORK INC | 5S34I029648 | Active | 690 m | map |
| SFPP LP Bradshaw Terminal | 5S34I024070 | Active | 721 m | map |
| Rancho Cordova - Tributary Point Dr (site 6352) | 5S34NNA003190 | NONA Submitted | 735 m | map |
| Sentry Hazel & 50 | 5S34NEC011961 | Active | 762 m | map |
| Exact Alloys | 5S34NEC010705 | Active | 769 m | map |
| Palm Tree Brewing Co | 5S34NEC012936 | Active | 773 m | map |
| Rudys Metals | 5S34I026595 | Active | 780 m | map |
| i5LED LLC | 5S34NNA002100 | No Action Required | 790 m | map |
| PRO TRUCKWORX LLC | 5S34I031451 | Active | 808 m | map |
| Yellow Cab Co of Sacramento | 5S34I023756 | Terminated | 808 m | map |
| Office of State Publishing | 5S34I023074 | Terminated | 811 m | map |
| C&C Paper Recycling Inc | 5S34I020335 | Terminated | 833 m | map |
| LiCAP Technologies Inc | 5S34NEC012201 | Active | 847 m | map |
| Rudys Metals | 5S34I024821 | Terminated | 857 m | map |
| Smurfit Stone Container Corp | 5S34I006309 | Terminated | 857 m | map |
| ComSonics Inc | 5S34NEC013030 | Active | 888 m | map |
| Resource Building Materials | 5S34I021410 | Terminated | 915 m | map |
| Marcum's Marine Services LLC | 5S34NNA001572 | NONA Submitted | 924 m | map |
| Butcher Power Products | 5S34NEC012982 | Active | 925 m | map |
| Heart of Gold Medical Transport Inc | 5S34NNA000512 | NONA Submitted | 932 m | map |
| CA Sacramento Self Storage LLC | 5S34NNA001818 | NONA Submitted | 965 m | map |
| Subway Truck Parts Inc | 5S34I013314 | Active | 965 m | map |
| Meticulous Manufacturing Inc | 5S34NEC003472 | Terminated | 984 m | map |
| SMM Sacramento | 5S34I005108 | Active | 988 m | map |
| Time Printing Solutions Provider | 5S34NEC007358 | Active | 998 m | map |
50 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.