What is WICC and what do they do?
The Watershed Information and Conservation Council (WICC) of Napa County guides and supports the community in its efforts to maintain and improve the health of Napa County's watershed lands.
The Napa River Watershed Basin
The Napa River Watershed is almost entirely within Napa County (a small portion is also in Solano County). It is defined by Mt. St. Helena to the north, the Mayacamas Mountains to the west, Howell Mountain, Atlas Peak, and Mt. George to the east, and the Napa-Sonoma Marsh to the south.
The Putah Creek Watershed Basin
The Putah Creek Watershed lies in four counties: Napa County, Lake County, Solano County and Yolo County. Putah Creek begins in Lake County, and empties into the Sacramento River. The watershed is bounded by Howell Mountain and Atlas Peak to the west and the Blue Ridge and Vaca Mountains to the east.
The Suisun Creek Watershed Basin
The Suisun Creek watershed falls within Solano and Napa Counties. Separated from the Napa Valley by Mt. George in the west and bounded by the Vaca Mountains in the east, the watershed contains the upper reaches of Suisun Creek and several of its tributaries including Wooden Valley and Gordon Valley Creeks.
Tips for Using These Maps
- To turn Map Layers on/off, click the check boxes in the left sidebar.
- Once a layer is displayed, clicking on a map feature will display more information about it. Note the mouse hand symbol turns to a finger when the map feature is ready to be clicked on.
- If a map layer does not load completely or displays erratically, please zoom in to the area of interest and/or click off some layers.
If you are a frequent or advanced map user, you can download the map data and create your own maps using Google Earth or Google Maps.
Select a theme map from the three Basins below.
Turn Layers on and off using the checkboxes.
Find WICC events, news and more by adding WICC pins to the map.
Choose a Theme from the basins below
.Napa River Basin
.Putah Creek Basin
.Suisun Creek Basin
Toggle layers using the checkboxes
Major Basin Napa-Sonoma
Major Basin Putah Creek
Major Basin Suisun Creek
Napa River Basin More
Toggle WICC pins using the checkboxes
Documents and Media Links