| Gem State Dam | |
|---|---|
| Location | Bonneville County, Idaho |
| Opening date | 1988[1] |
| Dam and spillways | |
| Height | 40 ft (12 m)[1] |
| Impounds | Snake River |
| Reservoir | |
| Capacity | 6,700 acre feet (8,300,000 m3)[1] |
| Catchment area | 9,800 sq mi (25,382 km²)[1] |
| Surface area | 305 acres (1.23 km²)[1] |
| Power station | |
| Installed capacity | 24 MW |
Gem State Dam is a concrete and rock-fill gravity dam on the Snake River, in the U.S. state of Idaho. Its location is near Idaho Falls, Idaho. The dam's primary purpose is to generate hydroelectricity, but it also provides water for irrigation agriculture.
Gem State Dam is owned and operated by the city of Idaho Falls.