Sherman Island, Rio Vista, CA Sherman Island is a 10,000-acre Sacramento - San Joaquing (Delta) island located in the southwestern Sacramento County, California. The island is bordered on the northwest by the Sacramento River, on…
Sherman Island HistoryIn 1849, near where the Sacramento and San Joaquin Rivers now join - the area was all swamp. At low tide the land was above water, and at high tide it was under water four to six feet, depending on…