Sherman Island

California 94571, USA

Sherman Island is an island in the delta of the Sacramento-San Joaquin River at the confluence of the two rivers in Sacramento County , California, 1.2 miles (1.9 km) northeast of Antioch. The island of 5,500 ha (14,000 acres) is the meeting point of Sacramento-, Solano-, and Contra Costa-Counties and is bordered on the north and northwest by the River Sacramento, on the northeast by Three Mile Slough, and on the east and southwest by the River San Joaquín. Sherman Island is a region popular for kite and windsurfing.


Sherman Island is 10 feet below sea level, owing to the drainage of the Delta wetlands that dried out their peat soils, resulting in land subsidence. "In ... parts of Sherman Island, the land has now subsided 25 feet since the late 1800s — and continues to sink between half an inch and 1.5 inches per year." It is possible that simultaneous levee failures on Sherman Island and surrounding islands, which occur in the wake of an earthquake, could threaten the Central Valley's fresh water supply.


Entry to the island is offered by boat only from California State Route 160, which uses the Antioch Bridge to connect Sherman Island with the city of Antioch to the south, and the Three Mile Slough Bridge to link Sherman Island with Brannan Island State Recreation Area to the north. Turn south onto Sherman Island Road and carry on to Mayberry Slough


The southwest of the island, known as the Lower Sherman Island Wildlife Area, occupies approximately 3,100 acres (1,300 ha) and features a wide marshy area and Sherman Lake where there is fishing and other water sports, especially windsurfing and kiteboarding. The California Fish & Game Commission established this region as a wildlife refuge in 1976. The Delta Flood Protection Act , passed in 1986 following extreme floods, provided measures to enhance flood protection for Sherman Island, as well as eight other islands. The aim of Senate Bill 1065, passed in 1991, was to insure that there was no net habitat loss to these islands.


Park hours were defined year-round as sunrise to sunset in 2019. Self-payment because there is no collector's charge

Pink Flowers

This amazing attraction is located near the following parks in Oakley, California:


  • Big Break Regional Shoreline

  • Antioch Dunes National Wildlife Refuge

  • Nunn-Wilson Family Park

  • Antioch Bridge

  • Antioch/Oakley Regional Shoreline 

  • Contra Costa Canal

  • Pistachio Park


And of course, if you are in need of an amazing dentist, call Balfour Dental today or stop by for a visit at our office located at 100 Cortona Way!