| Alesani Reservoir | |
|---|---|
| Réservoir d'Alesani (French) | |
 Alesani Reservoir seen looking northwest from Chiatra. Above, the road from Sant'Andréa-di-Cotone to Ortale. | |
  Alesani Reservoir  Alesani Reservoir | |
| Location | Corsica |
| Coordinates | 42°17′54″N 9°28′33″E / 42.29839°N 9.47577°E |
| Type | Reservoir |
| Primary inflows | Alesani River |
| Primary outflows | Alesani River |
| Catchment area | 56 square kilometres (22 sq mi) |
| Basin countries | France |
| Surface area | 49 ha (120 acres) |
| Water volume | 11,300,000 cubic metres (400,000,000 cu ft) |
| Surface elevation | 165 m (541 ft) |
Alesani Reservoir (French: Réservoir d'Alesani) or Alesani Lake (French: Lac de l'Alesani) is a reservoir in the Haute-Corse department of France formed in 1970 by damming the Alesani River with the Alesani Dam (French: Barrage d'Alésani). It is the main source of irrigation water along the east coast of Haute-Corse, and it also supplies water for human consumption and hydroelectric power generation.