Napa River, non-tidal
2026 303(d) list Waterbody ID CAR2065002020160701061256 River & Stream Region 2 · San Francisco Bay
At a glance
- 2026 listing Evidence: State-published
- On the 2026 303(d) list · 2 Appendix A decisions
- Category 4a: addressed by a USEPA-approved TMDL
- What a listing means
- Pollutants and stressors
- 2 pollutants in 2 Appendix A categories
- Pathogens (1) · Sediment (1)
- Listing decisions
- TMDL information Evidence: State-published
- 2 decisions with a TMDL requirement status; 2 name a TMDL project
- Status codes as published: 5B
- TMDL details
- Industrial stormwater facilities
- 0 report it as their receiving water Evidence: identification corroborated
- 163 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 4a.
- 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
- 2
- Integrated Report category
- 4a (addressed by a USEPA-approved TMDL)
- 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
- 2 — San Francisco Bay
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.
Pathogens (1 decision)
| Pollutant | Pollutant category | Category | Final listing decision | Decision status | Sources | Decision ID |
|---|---|---|---|---|---|---|
| Indicator Bacteria | Pathogens | 4a | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL) | Revised | A Source Unknown | 149111 |
Sediment (1 decision)
| Pollutant | Pollutant category | Category | Final listing decision | Decision status | Sources | Decision ID |
|---|---|---|---|---|---|---|
| Sedimentation/Siltation | Sediment | 4a | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL) | Original | Agriculture Road Construction | 67902 |
TMDL information Evidence: State-published
| Pollutant | TMDL requirement status | TMDL project | Priority | USEPA approval of TMDL | Expected attainment |
|---|---|---|---|---|---|
| Indicator Bacteria | 5B | Napa River Pathogens | — | 2006-11-08 | — |
| Sedimentation/Siltation | 5B | Napa River Sediment | — | 2011-01-20 | — |
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
- Upper Napa River 180500020201
- Middle Napa River 180500020202
- Dry Creek 180500020203
- Milliken Creek 180500020204
- Lower Napa River 180500020205
Overlapping the waterbody's shape Evidence: spatial
- Rector Creek-Conn Creek 180500020103
- Upper Napa River 180500020201 also published
- Middle Napa River 180500020202 also published
- Dry Creek 180500020203 also published
- Milliken Creek 180500020204 also published
- Lower Napa River 180500020205 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 |
|---|---|---|---|---|
| Round Hill Cellars Corp | 2 28I002974 | Terminated | 27 m | map |
| Wastewater Treatment Plant | 2 28I020074 | Terminated | 46 m | map |
| Allora Vineyards LLC | 2 28NEC012717 | Active | 76 m | map |
| Crystal Geyser Water Company | 2 28NEC004585 | Terminated | 93 m | map |
| Kent Rasmussen Winery | 2 28I014055 | Terminated | 116 m | map |
| Benessere Vineyards | 2 28I025995 | Terminated | 118 m | map |
| Benessere Vineyards | 2 28NEC005075 | Active | 118 m | map |
| Sutter Home Winery Inc | 2 28I002414 | Terminated | 140 m | map |
| Ranch Winery | 2 28I022856 | Terminated | 140 m | map |
| Benessere Vineyards | 2 28NEC005081 | Terminated | 144 m | map |
| Robert Pecota Winery | 2 28I014416 | Terminated | 155 m | map |
| Atalon Winery | 2 28I021045 | Terminated | 155 m | map |
| Atalon Winery | 2 28NEC000242 | Active | 155 m | map |
| Sterling Winery | 2 28I006034 | Terminated | 159 m | map |
| Frank Family Vineyard LLC | 2 28I025980 | Terminated | 164 m | map |
| Frank Family Vineyards | 2 28I029658 | Active | 164 m | map |
| Crystal Geyser Water Co | 2 28I022906 | Terminated | 177 m | map |
| Crystal Geyser Water Co | 2 28NEC000347 | Active | 177 m | map |
| Montelena Assoc | 2 28I014009 | Terminated | 181 m | map |
| Joseph Phelps Vineyards | 2 28I014114 | Active | 199 m | map |
| Clos Du Val Wine Co | 2 28I004014 | Terminated | 212 m | map |
| Clos Du Val Wine Co | 2 28I014379 | Terminated | 212 m | map |
| Duckhorn Wine Co | 2 28I014137 | Active | 220 m | map |
| The Ranch Winery | 2 28I026662 | Active | 229 m | map |
| Tank Garage Winery | 2 28NEC001730 | Active | 232 m | map |
| Fisher Vineyards | 2 28NEC005512 | Active | 240 m | map |
| Larkmead Vineyards | 2 28NEC000325 | Active | 244 m | map |
| Opus One Winery | 2 28I026035 | Active | 246 m | map |
| Round Pond Winery | 2 28NEC003046 | Active | 259 m | map |
| Sterling Vineyards | 2 28NEC013959 | Active | 262 m | map |
| T Vine Winery | 2 28NEC005197 | Terminated | 273 m | map |
| Rivers Marie Wines LLC | 2 28NEC012500 | Active | 273 m | map |
| William Harrison Vineyards & Winery | 2 28NEC001745 | Terminated | 285 m | map |
| Old Vine Wine Partners | 2 28NEC001729 | Terminated | 287 m | map |
| Clos Pegase Winery | 2 28I031166 | Active | 288 m | map |
| Chateau Montelena | 2 28I025463 | Active | 292 m | map |
| Eleven Eleven Winery | 2 28NEC013270 | Active | 300 m | map |
| The Napa Valley Reserve | 2 28I020112 | Active | 304 m | map |
| Laird Wine Studio | 2 28I028446 | Active | 308 m | map |
| William Harrison Vineyards & Winery | 2 28NEC007997 | Active | 308 m | map |
| Burgess Cellars | 2 28I029573 | Active | 308 m | map |
| Luna Vineyards | 2 28I028123 | Terminated | 309 m | map |
| Cardinale Winery | 2 28I015617 | Active | 312 m | map |
| Envy Wines LLC | 2 28I029782 | Active | 323 m | map |
| Envy Wines LLC | 2 28NEC010880 | Terminated | 323 m | map |
| Silver Oak Wine Cellars LLC | 2 28NEC007232 | Active | 334 m | map |
| Clos Pegase Winery | 2 28I024983 | Terminated | 347 m | map |
| Clos Pegase Winery | 2 28I029746 | Terminated | 347 m | map |
| Clos Pegase Winery | 2 28NEC001516 | Terminated | 347 m | map |
| Tedeschi Family Winery | 2 28I030267 | Active | 357 m | map |
163 facilities, nearest first. Page 1 of 4: next
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.