William H. Harsha Lake Reservoir
| Reservoir Name | William H. Harsha Lake |
| Dam Name | William H. Harsha Lake Dam |
| River | East Fork of Little Miami River |
| Administration City | Ohio |
| Country | United States |
| Year | 1973 |
| Dam Height | 62 |
| Dam Length | 442 |
| Area(Sqkm) | 7.8 |
| Area(Polygonal) | 7.8 |
| Capital Expenditure | 363.6 |
| Depth(M) | 46.6 |
| Avg Displacement Of Water | 11912 |
| Catchment Area In Sqkm | 861 |
| Main Usage | Flood control |
| Status | 2: Good |
| Longitude | -84.14625 |
| Latitude | 39.02125 |
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