Hammer Island

Clifton Court Forebay is a reservoir in the San Joaquin River Delta region of eastern Contra Costa County, California, 17 mi (27 km) southwest of Stockton. The estuary region the forebay is located in is only 1m to 3m above mean sea level.

Coney Island is a small island in the San Joaquin River delta, in California. It is part of Contra Costa County, and managed by Reclamation District 2117. Its coordinates are 37.8457598°N 121.5493939°W / 37.8457598; -121.5493939. It appears on a 1978 United States Geological Survey map of the area.

The C.W. Bill Jones Pumping Plant (formerly the Tracy Pumping Plant) located 9 miles (14 km) northwest of Tracy, California, was constructed between 1947 and 1951, and is a key component of the Central Valley Project. The Delta Cross Channel intercepts Sacramento River water as it travels westwards towards Suisun Bay and diverts it south through a series of man-made channels, the Mokelumne River, and other natural sloughs, marshes and distributaries. From there, the water travels to the C.W. Bill Jones Pumping Plant, which raises water into the Delta-Mendota Canal, which in turn travels 117 miles (188 km) southwards to Mendota Pool on the San Joaquin River, supplying water to other CVP reservoirs about midway. The Tracy Fish Collection Facility exists at the entrance of the pump plant in order to catch fish that would otherwise end up in the Delta-Mendota Canal.The Jones Pumping Plant provides water service to 32 water districts within the western San Joaquin Valley, San Benito and Santa Clara counties. Of the approximate 3,000,000 acre-feet (3.7×109 m3) of water distributed, 2,500,000 acre-feet (3.1×109 m3) is delivered to farms, 200,000 acre-feet (250,000,000 m3) to urban areas, including Tracy and cities with in the Santa Clara Valley Water District, and 300,000 acre-feet (370,000,000 m3) for wildlife refuges.

Salisbury Island (also known as Salsbury Island) is an island in the Old River, in the Sacramento–San Joaquin River Delta. It is named after its original owner, tugboat operator Leslie Salsbury, who purchased it in 1945. It is in Contra Costa County, in northern California. Its coordinates are 37°51′00″N 121°32′13″W.

The John E. Skinner Delta Fish Protective Facility or the Skinner Fish Facility is a fish collection and diversion facility located 2 miles upstream from the Banks Pumping Plant. In operation since 1968 by the California Department of Water Resources, the facility utilizes behavioral devices (fish screens) that divert most fish away from the pumping plant. Fish that make it past the behavior devices are collected into concrete tanks where they are later released back into the Sacramento River or the San Joaquin River.

Kings Island (formerly Bra's Island) is an island in the Old River in the south Sacramento-San Joaquin River Delta in San Joaquin County, California, 9.3 miles (15 km) southwest of Stockton. The small 8.6-acre (3.5 ha) island is the smallest of a cluster of delta islands including Eucalyptus Island, Widdows Island, Victoria Island, and Coney Island, adjacent to Clifton Court Forebay. At 3 feet (0.91 m) above sea level with the surrounding waters kept a bay by a levee system, the island is accessible only by the one road from the Clifton Court levee or by boat. It appears on a 1978 United States Geological Survey map of the area.

Mountain House is a planned community in San Joaquin County, California. Mountain House is 5 miles (8.0 km) northwest of Tracy, 15 miles east of Livermore, 0.5 miles from Interstate 580, and about 50 miles (80 km) east of San Francisco. The population was 24,499 at the 2020 census. For statistical purposes, the United States Census Bureau has defined Mountain House as a census-designated place (CDP).

Eucalyptus Island is a small island in the Sacramento–San Joaquin River Delta. It is part of Contra Costa County, California. Its coordinates are 37°51′35″N 121°34′15″W, and the United States Geological Survey measured its elevation as 3 ft (0.91 m) in 1981. It appears on a 1978 USGS map of the area.

Union Island is a small island in the San Joaquin River delta, in California. It is part of San Joaquin County, and managed by Reclamation Districts 1 and 2. Its coordinates are 37.8374268°N 121.5155042°W / 37.8374268; -121.5155042 (Union Island).

Widdows Island is a small island in the Sacramento–San Joaquin River Delta along the Old River distributary of the San Joaquin River. It is part of San Joaquin County, California. Its coordinates are 37°51′40″N 121°34′27″W, and the United States Geological Survey measured its elevation as 0 ft (0 m) in 1981. It appears on USGS maps of the area as dry land up to 2018; the latest 2021 topographic map shows the island now mostly flooded, with the old levee surrounding it still above water.

The Byron-Bethany Irrigation District (BBID) is a special district serving the water needs of regions of Alameda, Contra Costa, and San Joaquin Counties in California. This area is about 30,000 acres (12,000 ha) and serves 160 agricultural customers, as well as residents of the all-inclusive Mountain House village community are served as well. Notable recipients of BBID's services in the area are The Patterson Pass Business Park, Prologis International Park of Commerce, and Cordes Ranch. The water comes from the Sacramento–San Joaquin River Delta and the Delta–Mendota Canal.

The Bethany Reservoir is located 8 miles (13 km) northeast of Livermore, California, USA, on the California Aqueduct. It serves as the forebay for the South Bay Pumping Plant that feeds the South Bay Aqueduct.