UCCE Sonoma County
University of California
UCCE Sonoma County

Watershed Planning

What is a Watershed?

land use ws2
A watershed is a geographic unit that collects, stores, and releases water. Collected water comes in the form of rain, snow and, in our coastal watersheds, fog. It is stored in lakes, ponds, and subsurface soils and geologic formations. Rivers and streams, as well as groundwater flow, release this water. In addition to these hydrologic functions, watersheds cycle and transfer nutrients and transport sediment. They also provide habitat for terrestrial and aquatic plants animals. For more information on watershed processes, see the UC publication Watershed Function.

Know Your Watershed

There are several interactive online tools that offer maps, data, links to watershed communities and other details specific to your watershed. The websites below allow you to locate your watershed by name or geographical region and obtain a variety of valuable information.

Planning, Assessment & Implementation

Additional Watershed Information & Resources


University of California Cooperative Extension, Sonoma County
133 Aviation Blvd Suite 109, Santa Rosa, CA 95403  Phone: 707.565.2621  Fax: 707.565.2623
Office Hours:  M-F, 8am-Noon & 1pm-4pm

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