U.S. Fish & Wildlife Service logo A Unit of the National Wildlife Refuge System
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National Wildlife Refuge

Hwy 20, half a mile west of
Colusa, CA   
E-mail: sacramentovalleyrefuges@fws.gov
Phone Number: 530-934-2801
Visit the Refuge's Web Site:
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  Wildlife and Habitat

Continued . . .

The refuge was established in 1945 under the authority of the Migratory Bird Treaty Act and the Lea Act. Lands were acquired from 1945 until 1953 with Migratory Bird Hunting and Conservation Stamp Act funds. The Lea Act was passed to acquire habitat for migratory waterfowl and thereby alleviate severe crop losses experienced by rice growers.

The refuge is divided into 30 units, and wetlands comprise about 78% of the total acreage. As wetlands of the Central Valley have been lost (95% over the past 100 years), the waterfowl resource has become increasingly dependent upon the refuges of the Sacramento Valley. The refuge typically supports wintering populations in excess of 200,000 ducks and 100,000 geese. As a result, the marsh management program is one of the most intensive in the refuge system.

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