| Bethany Reservoir | |
|---|---|
 Bethany Reservoir and aqueduct | |
  Bethany Reservoir  Bethany Reservoir | |
| Location | Alameda County, California |
| Coordinates | 37°46′15″N 121°36′03″W / 37.77083°N 121.60083°W[1] |
| Type | reservoir |
| Basin countries | United States |
| Surface area | 180 acres (73 ha) |
| Shore length1 | 6 miles (9.7 km) |
| 1 Shore length is not a well-defined measure. | |
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.