Napa River Sediment TMDL and Habitat Enhancement Plan

On January 23, 2007, the Regional Water Board adopted a Basin Plan amendment incorporating a sediment TMDL, implementation plan, and habitat enhancement plan for the Napa River Watershed. The State Water Board will consider this amendment for approval in the future. Check back here for information on the State Board's public comment period and hearing schedule.

Adopted Resolution No. R2-2007-0011 (pdf 832 KB)
Adopted Basin Plan Amendment (pdf 328 KB)
Final Staff Report (pdf 3 MB)
Responses to Comments (pdf 876 KB)
Written Comments (pdf 25.8 MB)

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