Lake Wilhelm Reservoir
| Reservoir Name | Lake Wilhelm |
| Dam Name | Lake Wilhelm Dam |
| River | Sandy Creek |
| Administration City | Pennsylvania |
| Country | United States |
| Year | 1969 |
| Dam Height | 15 |
| Dam Length | 152 |
| Area(Sqkm) | 5.2 |
| Area(Polygonal) | 5.2 |
| Capital Expenditure | 81.9 |
| Depth(M) | 15.8 |
| Avg Displacement Of Water | 2066 |
| Catchment Area In Sqkm | 154 |
| Main Usage | Flood control |
| Status | 3: Fair |
| Longitude | -80.08625 |
| Latitude | 41.370417 |
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