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

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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.

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
Summers Winery LLC	2 28I025540	Terminated	606 m	map
Twin Peaks Winery	2 28I023837	Active	611 m	map
Beaucanon Estate	2 28I025954	Active	620 m	map
Freemark Abbey Winery	2 28I004316	Terminated	621 m	map
Freemark Abbey Winery	2 28I016546	Terminated	621 m	map
Ballentine Vineyards Inc	2 28I014008	Active	622 m	map
Markham Vineyards	2 28I003333	Active	629 m	map
Spanos Berberian Winery LLC dba Bell Wine Cellars	2 28NEC000632	Terminated	644 m	map
Signorello Estate	2 28NEC001381	Terminated	647 m	map
Stags Leap Winery	2 28I014147	Terminated	656 m	map
REYNOLDS FAMILY WINERY	2 28NEC005321	Active	656 m	map
Ellman Family Winery LLC	2 28NEC015268	Active	681 m	map
Schramsberg Vineyard	2 28I001710	Active	696 m	map
Silverado Vineyards	2 28I002585	Terminated	697 m	map
William Cole Vineyards	2 28NEC000123	Active	699 m	map
Krupp Brothers Winery	2 28I030393	Active	712 m	map
Castello di Amorosa	2 28I023226	Active	718 m	map
The Morlet Selection Incorporated	2 28NEC000455	Active	720 m	map
Napa Wine Co	2 28I010267	Terminated	725 m	map
Oakville Winery ACO Group Inc	2 28NEC001012	Terminated	725 m	map
Tamber Bey Vineyards LLC	2 28NEC012808	Active	729 m	map
Vincent Arroyo Winery	2 28NEC005444	Active	734 m	map
Darioush Khaledi Winery LLC	2 28I025914	Active	736 m	map
Napa Wine Company	2 28NNA002613	No Action Required	738 m	map
Hagafen Cellars Inc	2 28NEC005412	Active	741 m	map
Peju Province Winery	2 28I026144	Active	741 m	map
Sequoia Grove Vineyards	2 28I014333	Terminated	741 m	map
Joseph Cellars Winery	2 28I030159	Active	743 m	map
Archangel Investments LLC	2 28NEC011402	Active	744 m	map
Hunnicutt Wine Company LLC	2 28I025793	Active	753 m	map
Chimney Rock Winery	2 28I025735	Active	767 m	map
Faust Wines	2 28I028550	Terminated	769 m	map
Faust Wines	2 28NEC012117	Active	769 m	map
Madrigal Family Winery	2 28NEC008527	Active	770 m	map
Foley Johnson Winery	2 28I026778	Terminated	773 m	map
Foley Johnson Winery	2 28NEC005676	Active	773 m	map
Robert Mondavi Winery	2 28I025771	Active	779 m	map
Quintessa	2 28I026265	Active	780 m	map
Real Estate Reader	2 28NEC010005	Active	796 m	map
Frogs Leap Winery	2 28I014491	Active	797 m	map
Barrel Chai	2 28I030686	Active	799 m	map
Anoretti Winery	2 28I014599	Terminated	800 m	map
Rolinda Harsany DDS INC	2 28NEC012015	Terminated	806 m	map
Pine Ridge Vineyards	2 28I025612	Active	834 m	map
Goosecross Cellars	2 28I014139	Terminated	835 m	map
Monticello Vineyards	2 28I028285	Active	842 m	map
Brasswood Cellars	2 28NEC012557	Active	849 m	map
1520 Acquisition	2 28I027578	Terminated	851 m	map
NCTPA	2 28I003491	Terminated	852 m	map
1510 Acquisition	2 28I027630	Active	856 m	map

163 facilities, nearest first. Page 3 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.