Union Island (California)

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.

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.

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.

Hammer Island is a small island in the Sacramento–San Joaquin River Delta, in Contra Costa County, California, originally named Santos Island, it was changed to Hammer Island after Hans Hammer purchased the island from Mr. Santos in 1939. Its coordinates are 37°48′59″N 121°33′25″W,; the United States Geological Survey measured its elevation as 0 ft (0 m) in 1981, and it appears on a 1978 USGS map.

Victoria Island is an island in the Sacramento-San Joaquin River Delta, 20 km (12 mi) southwest of Stockton. The 7,200-acre (2,900 ha) island is bounded on the north by North Victoria Canal, on the northeast by Middle River, on the southeast by Victoria Canal, and on the south- and southwest Old River. It is crossed by California State Route 4. It is in San Joaquin County, and managed by Reclamation District 2040. It appears on 1913 and 1952 United States Geological Survey maps of the area.

The Victoria Island structure is a 5.5 km (3 mi) bowl-shaped structure buried in the shale sediments of the Sacramento-San Joaquin River Delta, 12 miles (19 km) west of Stockton, California. The circular structure is part of a former sea bed, and lies 1,490–1,600 meters (4,890–4,250 ft) below sea level.Discovered during oil exploration and reported at the Lunar and Planetary Science Conference in Houston, Texas, in March 2007, it is thought to be a buried impact crater formed between 37 and 49 million years ago.Victoria Island, which the structure is named for, is in the San Joaquin River Delta at approximately 37.890°N 121.535°W / 37.890; -121.535. The current publications do not list a more precise location for the impact structure than the island.

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.

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.

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.

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).

Rancho Pescadero was a 35,546-acre (143.85 km2) Mexican land grant in present-day San Joaquin County, California and Alameda County, California given in 1843 by Governor Manuel Micheltorena to Antonio María Pico. Pescadero means "the fishery" or "the place to fish" in Spanish. The grant encompassed present-day Tracy.

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.