Prettyboy Dam
| Dam Name | Prettyboy Dam |
| River | Gunpowder Falls |
| Administration City | Maryland |
| Country | United States |
| Year | 1936 |
| Dam Height | 47 |
| Dam Length | 211 |
| Area(Sqkm) | 4 |
| Area(Polygonal) | 4 |
| Capital Expenditure | 111.1 |
| Depth(M) | 27.8 |
| Avg Displacement Of Water | 2367 |
| Catchment Area In Sqkm | 204 |
| Main Usage | Water supply |
| Status | 2: Good |
| Longitude | -76.712083 |
| Latitude | 39.624583 |
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