which county is brannan island, california
The park, approximately 336 acres in size, is accessed by Highway 160 a few miles south of the city of Rio Vista in Sacramento County. The park is located on the lower peninsular extension of Brannan Island, and is surrounded by the Sacramento River on the west, Three Mile Slough on the southeast, and Seven Mile Slough on the northeast. The park has a 6 lane launch ramp, over 140 campsites and areas for picnicking and swimming.