Marsh Creek (California)

Jersey Island is an island in the Sacramento-San Joaquin River Delta of Contra Costa County, California, approximately 10 kilometres (6.2 mi) east of Antioch. The 1,425-hectare (3,520-acre) bounded on the west by the San Joaquin River-Stockton Deepwater Shipping Channel, on the north by the False River, on the northeast by Piper Slough, on the east by Taylor Slough, and on the south by Dutch Slough. It is administered by Reclamation District 830.

Oakley is a city in Contra Costa County, California, United States. It is within the nine-county San Francisco Bay Area. The population at the 2020 United States census was 43,357. Oakley was incorporated in 1999, making it the newest incorporated city in Contra Costa County.

Oakley station is a planned station that will be a stop on Amtrak California's San Joaquin service. It is located near Main Street between O'Hara Avenue and 2nd Street. The station was partially funded by a 2018 grant from California's Transit and Intercity Rail Capital Program. Construction was expected to be completed by 2022. As of March 2023, the station is expected to open in the third quarter of 2024, replacing Antioch–Pittsburg station.

Sand Hill is a former unincorporated community now annexed to Oakley in Contra Costa County, California. It lies at an elevation of 43 feet (13 m). It is west of Knightsten on the far edge of the county.

Big Break Regional Shoreline is a regional park in Oakley, Contra Costa County, northern California. It is a part of the East Bay Regional Park District system.

Oakley Union Elementary School District is a public school district in Contra Costa County, California, United States. Oakley Union oversees nine public schools, including seven elementary schools (KG–5) and two middle schools (6–8).

Bethel Island is an island in the Sacramento–San Joaquin River Delta of Contra Costa County, California, approximately 10 kilometres (6.2 mi) east of Antioch. The island describes itself as "the heart of the California Delta." Bethel Island (formerly known as Bethell, Bethell Ranch, Bethel Tract, Sand Mound Ranch, Sand Mound Tract) is also a census-designated place (CDP) on the island. The population at the 2010 census was 2,137, a 7.6 percent decline from 2,312 at the 2000 census. The community of Bethel Island is governed as a Special Act District created by the California State legislature and named the Bethel Island Municipal Improvement District (BIMID). It is a popular destination for recreation seekers, especially hunters, fishermen and boaters.

The Contra Costa Canal is a 47 mi (76 km) aqueduct in the US state of California. Its construction began in 1937, with delayed completion until 1948 due to World War II shortages in labor and materials. A portion of the canal's right of way has been developed as the Contra Costa Canal Regional Trail, a biking and walking trail, and is managed by the East Bay Regional Park District.

Knightsen is a census-designated place (CDP) in Contra Costa County, California, in the United States. As of the 2010 census, the CDP population was 1,568, up from 861 reported in the 2000 census.

{{Merger with Franks Tract State Recreation Area has been proposed. Please see Talk page.}} The Antioch Bombing Target a 500-acre (200 ha) plot was a United States Navy target used from 1943 to 1952. It is now part of the Franks Tract State Recreation Area.

Freedom High School is located in Oakley, California, United States. It opened in 1996 on the grounds of Liberty High School, before moving to the new campus, as a part of the Liberty Union High School District. The current Liberty Union High School District contains Freedom, Liberty, Heritage, and Independence High Schools.

Franks Tract State Recreation Area (SRA) is a state park unit of California, United States, featuring a flooded area in the Sacramento–San Joaquin River Delta. It is accessible only by water. Franks Tract, and a smaller adjoining submerged property called "Little Franks Tract", are situated between the False River and Bethel Island. The recreation area is used primarily for fishing and waterfowl hunting, because of its exposure to frequent strong winds and fluctuating water levels. In times of high water, the entire site can be submerged except for portions of the old levees. The 3,523-acre (1,426 ha) park was established in 1959. It is managed from nearby Brannan Island State Recreation Area, 6 miles (9.7 km) to the northwest.