Keyhole Reservoir
| Reservoir Name | Keyhole |
| Dam Name | Keyhole |
| River | Belle Fourche River |
| Administration City | Wyoming |
| Country | United States |
| Year | 1951 |
| Dam Height | 51 |
| Dam Length | 582 |
| Area(Sqkm) | 15 |
| Area(Polygonal) | 15 |
| Capital Expenditure | 229.2 |
| Depth(M) | 15.3 |
| Avg Displacement Of Water | 7207 |
| Catchment Area In Sqkm | 4991 |
| Main Usage | Irrigation |
| Status | 2: Good |
| Longitude | -104.780417 |
| Latitude | 44.38125 |
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