Brannan Island State Recreation Area 
18552 State Highway 12
Isleton, CA 95641
916-777-6671
http://www.parks.ca.gov/default.asp?page_id=487
State Park: Bike, Birding, Camp, Fish, Hike, Picnic, Walk, Water Sports
A maze of waterways through the Sacramento-San Joaquin Delta. This park northeast of San Francisco Bay, has countless islands and marshes with many wildlife habitats and many opportunities for recreation, including boating, windsurfing and swimming.