Contact Us Search

Napa-Sonoma Marshes Widlife Area Land Management Plan

Project Description and Location

The approximately 14,000-acre NSMWA is composed of predominantly former tidelands on the plain at the northern edge of San Pablo Bay. It is located in Sonoma, Napa, and Solano counties. The NSMWA is shown on Cuttings Wharf, Sears Point and the Mare Island U.S. Geological Survey 7.5-Minute Quadrangles. NSMWA lies within an area bounded by State Route (SR) 37 and the broad expanse of San Pablo Bay mudflats and intertidal marshes on the south, SR 121 on the west, the Union Pacific Railroad tracks and SR 121/12 on the north, and SR 29 on the east. The major watersheds providing freshwater to the NSMWA include the Napa River and Sonoma, Tolay, and Huichica creeks.

The principal natural resource management consideration for the NSMWA is to restore and enhance a mosaic of habitats, including tidal salt and brackish water marshes, managed ponds, seasonal wetlands, and adjacent uplands, that will benefit many species of rare, threatened, and endangered species as well as a broad range of fish, wildlife, and plant species. The Land Management Plan (LMP) also focuses on the management of wildlife-related recreational activities that are compatible with the diverse mosaic of habitats because CDFW is committed to providing wildlife compatible recreation.

Public Review Period

The Initial Study / Negative Declaration was circulated for public review and comment for a period of 30 days from August 16, 2010 to September 14, 2010.

A hard copy of the documents are available at the regional office:

CDFW Bay Delta Region
7329 Silverado Trail
Napa, CA 94558
(707) 944-5500 

Last update : 7/20/2017 3:03:20 PM

Wildlife Branch - Lands Program
1812 9th Street, Sacramento, CA 95811
(916) 445-0411