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
Regional Water Board: Region 2 · San Francisco Bay; River & Stream · Map
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)

Pathogens: Appendix A decisions
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)

Sediment: Appendix A decisions
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

TMDL information published for this waterbody
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.

Facilities whose reported location is within 1 km of this waterbody
Facility	WDID	Status	Distance	Map
Stonewriter LLC	2 28NEC001028	Terminated	359 m	map
Rombauer Vineyards North	2 28I030449	Active	360 m	map
Gamble Family Vineyards	2 28NEC000108	Active	361 m	map
Clos Pegase Winery	2 28I014378	Terminated	365 m	map
Venge Land Ventures LLC	2 28NEC012626	Active	370 m	map
Summit Vineyards Estate LLC	2 28NEC014613	Active	371 m	map
Rombauer Vineyards Inc	2 28I025961	Terminated	375 m	map
Boeschen Vineyards	2 28I029380	Active	388 m	map
Spanos Berberian Winery LLC	2 28I028133	Active	411 m	map
Melka Estates & Winery	2 28NEC013331	Active	413 m	map
Silverado Hill Cellars	2 28I014330	Terminated	414 m	map
The Harder Group	2 28NEC005200	Active	414 m	map
Finkelstein Vineyards DBA Judds Hill Winery	2 28NEC001136	Active	420 m	map
Trinchero Napa Valley	2 28I021963	Active	422 m	map
St Andrew S Vineyard	2 28I002827	Terminated	430 m	map
3730 Silverado Trail LLC	2 28I029495	Active	440 m	map
Ehlers Estate	2 28I028162	Active	448 m	map
Girard Winery	2 28I031162	Active	456 m	map
Saint Helena Winery	2 28I025989	Active	472 m	map
Charles Krug Winery	2 28I014290	Active	473 m	map
Girard Winery	2 28I030415	Terminated	480 m	map
Girard Winery	2 28NEC008165	Terminated	480 m	map
St Supery Winery	2 28I003653	Active	487 m	map
Black Stallion Winery	2 28NEC000480	Active	510 m	map
Freemark Abbey	2 28I020948	Terminated	515 m	map
Freemark Abbey	2 28NEC003594	Active	515 m	map
Sterling Vineyards	2 28I026760	Terminated	526 m	map
Cakebread Cellars	2 28I026608	Active	527 m	map
Razi Winery LLC	2 28NEC016071	Active	529 m	map
Nickel & Nickel Winery	2 28I026032	Active	530 m	map
Fleury Estate Winery	2 28I023884	Active	531 m	map
The Terraces Winery	2 28I024022	Active	534 m	map
Kapcsandy Family LLC	2 28NEC000626	Active	539 m	map
Cunat Family Winery	2 28I026220	Terminated	540 m	map
Cunat Family Winery	2 28NEC005149	Active	540 m	map
Big Ranch Road Winery	2 28NEC015553	Active	544 m	map
Laird Big Ranch	2 28I028394	Terminated	546 m	map
Honig Vineyard and Winery	2 28NEC015100	Active	546 m	map
Rombauer Vineyards	2 28I014232	Terminated	547 m	map
Revana Family Partners LP	2 28I025495	Active	550 m	map
Clos Du Val Winery	2 28I025907	Active	550 m	map
Celani Family Vineyards	2 28I025928	Active	555 m	map
Silverado Vineyards	2 28I029928	Active	580 m	map
Sequoia Grove Winery	2 28I028738	Active	589 m	map
Vineyard 29 Winery	2 28I024707	Active	589 m	map
Villa Andriana	2 28I014062	Terminated	600 m	map
St Clement Vineyards	2 28I014201	Terminated	601 m	map
St Clement Vineyards	2 28I015413	Terminated	601 m	map
St Clement Vineyards	2 28NEC000062	Terminated	601 m	map
Realm North	2 28I030910	Terminated	601 m	map

163 facilities, nearest first. Page 2 of 4: previous next

Sources and provenance

Sources behind this page
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.