Mauvoisin
| Dam Name | Mauvoisin |
| River | Drance de Baanes |
| Near City | Fionnay |
| Administration City | Valais |
| Country | Switzerland |
| Year | 1957 |
| Dam Height | 250 |
| Dam Length | 520 |
| Area(Sqkm) | 1.1 |
| Area(Polygonal) | 1.1 |
| Capital Expenditure | 211.5 |
| Depth(M) | 192.3 |
| Avg Displacement Of Water | 4403 |
| Catchment Area In Sqkm | 110 |
| Main Usage | Hydroelectricity |
| Status | 3: Fair |
| Longitude | 7.347083 |
| Latitude | 45.997083 |
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