Decker Island Wildlife Area: hunting rules and map
Decker Island Wildlife Area is 28 acres of CDFW land in Solano County, in CDFW's Bay Delta Region. Title 14, Section 551 lists it as Type C: open daily for hunting all legal species without a hunting pass, except where CDFW's area rules say otherwise. It lies in deer Zone A, where CDFW estimates 9,184 deer were taken in 2025.
Data updated October 2026. Rules: CDFW's 2026-2027 land use regulations (updated July 1, 2026). Boundary and acres: CDFW. Zones: CDFW. Land around it: CPAD 2026a.
CDFW landState parkOther state or federal landDecker Island WADeer zone lineLake or riverHighway
| Size | 28 acres (CDFW boundary) |
|---|---|
| CDFW region | Region 3, Bay Delta Region |
| County | Solano |
| Wildlife area type | Type C |
| Camping | Not listed in section 551(m), so not allowed |
| Deer zone | Zone A |
| Nearest towns | Rio Vista (5 mi), Bethel Island (7 mi) and Isleton (7 mi) |
What are CDFW's rules for Decker Island Wildlife Area?
As a Type C area, Decker Island WA needs no hunting pass; the rows below are CDFW's own limits for it.
| Rule | Unit | CDFW's words |
|---|---|---|
| Firearms | Whole area | Rifles and pistols are prohibited. Wildlife Areas with Firearm Restrictions Description of Restriction |
Source: CDFW 2026-2027 Waterfowl, Upland Game, and Public Use of Department Lands Regulations, Title 14, Section 551. CDFW's page for Decker Island Wildlife Area has maps and contacts. Deer, elk and pronghorn hunting also follow the zone's own season and tag.
What does CDFW say about 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.
33 miles south of Rio Vista at the north end of Decker Island on the Sacramento River
On hunting, CDFW's page says: 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. Facilities: None
CDFW lists waterfowl hunting for the area, and also wildlife viewing.
From CDFW's page for Decker Island Wildlife Area, read October 2026.
Which hunt zones is Decker Island Wildlife Area in?
CDFW's numbers for each zone are for the whole zone, not the wildlife area alone.
| Zone | Acres of Decker Island WA in it | CDFW's latest numbers for the zone |
|---|---|---|
| Deer Zone A | 28 | 9,184 deer taken in 2025, 34.2% hunter success; 2026 general season August 8 to September 20 |
Harvest: CDFW California Deer Harvest Statistics (2020 to 2025). Acres measured by FilledTag from CDFW's boundaries.
What public land is around Decker Island Wildlife Area?
Within 4 miles of its boundary, CPAD 2026a maps 8,988 acres of other state or federal land, 345 acres of state park land and 52 acres of CDFW land.
How do you get to Decker Island Wildlife Area?
Highways within 8 miles: CA 160, CA 84, CA 12 and CA 4. Nearest towns: Rio Vista (5 miles), Bethel Island (7 miles), Isleton (7 miles) and Oakley (7 miles). CDFW's page for the area gives directions and parking.
Questions hunters ask
Can you hunt on Decker Island Wildlife Area?
Yes. Section 551 lists it as Type C. Type C areas are open daily for all legal species, unless CDFW's area rules say otherwise.
Can you camp on Decker Island Wildlife Area?
No. Section 551(m) does not list Decker Island Wildlife Area, and camping is prohibited on wildlife areas it does not list (Section 550(p)).
Which deer zone is Decker Island Wildlife Area in?
All of it is in deer Zone A, by CDFW's boundaries. CDFW estimates 9,184 deer were taken in Zone A in 2025, across the whole zone.
What is the closest town to Decker Island Wildlife Area?
Rio Vista (5 miles), Bethel Island (7 miles) and Isleton (7 miles), by the Census Bureau's places.
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Where these facts come from
- Rules: CDFW 2026-2027 Waterfowl, Upland Game, and Public Use of Department Lands Regulations.
- Boundary and acres: CDFW public access lands (BIOS ds3077); CDFW, Decker Island Wildlife Area.
- Zones: CDFW BIOS zone layers. Surrounding public land: California Protected Areas Database (CPAD) 2026a.
- Deer harvest: CDFW California Deer Harvest Statistics (2020 to 2025).
FilledTag is not part of the California Department of Fish and Wildlife.