Napa River Sediment TMDL and Habitat Enhancement Plan

On September 9, 2009, the Regional Water Board adopted a Basin Plan amendment incorporating a TMDL for sediment and a Habitat Enhancement Plan for the Napa River. The amendment now goes to the State Water Board for approval.

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Adopted Basin Plan amendment and supporting documents

Final Resolution R2-2009-0064
Adopted Basin Plan Ammendment
Staff Report (pdf)
Responses to Comments (pdf)
Written Comments (pdf)
- Exhibits 1-8 (Living Rivers Council)* (pdf)

* These exhibits are effectively summarized in other exhibits contained in Written Comments.

TMDL Implementation

Conditional Waiver Program for Vineyard Facilities in the Napa River and Sonoma Creek Watersheds

Water Board staff is developing a Conditional Waiver of Waste Discharge Requirements for Vineyard Facilities in the Napa River and Sonoma Creek Watersheds (Vineyard Waiver), in which many vineyard owners and/or operators would be required to enroll. Staff will solicit input from stakeholders during this waiver development process. The essential component of the Vineyard Waiver will be the vineyard owner/operator’s completion of a farm water quality plan (farm plan). A farm plan includes a comprehensive inventory and assessment of natural resources, agricultural lands, and management practices. The farm plan must address surface erosion, storm water runoff, sediment delivery from roads, pesticide use, nutrient management, and protection of stream areas.

Napa River Basin Limiting Factors Analysis Final Report

Executive Summary (PDF file)
Technical Report (PDF file)
Figures (PDF file)
Appendices (PDF file)
Maps 1-4 (PDF file)
Maps 5-8 (PDF file)
Maps 9-13 (PDF file)
Maps (zip)

Background:

The Napa River and its tributaries are listed as impaired because of too much sediment. The listing was made in response to concerns regarding adverse impacts to habitat for steelhead trout, chinook salmon, and other threatened species whose populations have declined substantially in recent decades. The Napa River Sediment TMDL and Habitat Enhancement Plan examines this water quality problem, identifies pollutant sources, and specifies actions that will restore a healthy fishery in this watershed.

For more information, contact:
Mike Napolitano
Environmental Scientist
San Francisco Bay Regional Water Quality Control Board
1515 Clay St., Suite 1400
Phone: (510) 622-2397
Fax: (510) 622-2460
E-mail: MNapolitano@waterboards.ca.gov