| Gem State Dam | |
| Dam Crosses: | Snake River |
| Location: | Bonneville County, Idaho |
| Location Map: | Idaho |
| Operator: | City of Idaho Falls |
| Dam Height: | 40 ft (12 m)[1] |
| Opening: | 1988 |
| Res Capacity Total: | 6700acre.ft |
| Res Catchment: | 9,800 sq mi (25,382 km2) |
| Res Surface: | 305 acres (1.23 km2) |
| Coordinates: | 43.4208°N -112.1019°W |
| Plant Capacity: | 22.6 MW [2] |
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.