Olef
| Dam Name | Olef |
| River | Olef |
| Near City | Schleiden |
| Administration City | North Rhine-Westphalia |
| Country | Germany |
| Year | 1961 |
| Dam Height | 59 |
| Dam Length | 282 |
| Area(Sqkm) | 0.8 |
| Area(Polygonal) | 0.8 |
| Capital Expenditure | 19.3 |
| Depth(M) | 24.1 |
| Avg Displacement Of Water | 659 |
| Catchment Area In Sqkm | 49 |
| Main Usage | Water supply |
| Status | 2: Good |
| Longitude | 6.42125 |
| Latitude | 50.495417 |
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