Lower Sherman Island Wildlife Area is approximately 3,100 acres of riparian marshland with willows and cottonwoods at the confluence of the Sacramento and San Joaquin Rivers. The property was designated as a wildlife area by the Fish and Game Commission in 1976. After serious flooding in 1986, the Delta Flood Protection Act provided flood control improvement projects for eight islands including Sherman. In 1991, Senate Bill 1065 went into effect to assure that these activities result in no net loss of habitat. For more information, call the Bay Delta Region Napa office at (707) 944-5500.