Decker Island Wildlife Area


The Decker Island Wildlife Area is a 34-acre property. Wildlife consists of a variety of terrestrial mammals, aquatic furbearers and bird populations. Birds comprise the major portion of wildlife, attributable to the habitats on and surrounding the island: open water, mudflats and riparian and emergent vegetation. These niches provide some environments for waterfowl, egrets, herons, gulls, terns and songbirds. The land surrounding Decker Island is used mainly for agriculture.

For more information, call the Bay Delta Region Fairfield office at (707) 428-2002.

Recreational Opportunities

Boat Access Only Wildlife Viewing Hunting with Shotguns Waterfowl Hunting

Activities: wildlife viewing


Type C: Decker Island Wildlife Area does not require the purchase of a hunting pass for entry. Entry permits and/or passes or special drawing may be required for hunting on some Type C wildlife areas.

NOTE: Visitors are responsible for knowing and complying with all regulations pertaining to the use of Department lands.

Refer to the Public Uses on State and Federal Lands section of the Waterfowl, Upland Game, and Public Use Regulations (PDF) booklet for both statewide and property-specific regulations.

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You may not operate a drone on CDFW Lands without a Special Use Permit.

Area History

Prior to construction of the Sacramento Deep-Water Ship Channel, the site was actually a part of the western shore of the Sacramento River. Decker Island was formed when the present river channel was dredged to the west. A large portion of the new island was subsequently used as a dredge disposal site. Relatively recent disposal of dredged materials in the island’s interior and along the eastern bank has severely limited plant growth. The property was designated as a wildlife area by the Fish and Game Commission in 1988.

Related Documents

Map of Decker island WA - click to enlarge in new window
Click to enlarge


Bay Delta Region (Region 3)

Solano County

3 miles south of Rio Vista at the north end of Decker Island on the Sacramento River

Access: by boat only

CDFW Lands Viewer