| Ancascocha Dam | |
| Location Map: | Peru |
| Coordinates: | -14.9222°N -73.8389°W |
| Country: | Peru Ayacucho Region |
| Dam Height: | 13m (43feet) |
| Res Name: | Lake Ancascocha |
| Res Capacity Total: | 15000000m2 |
| Res Elevation: | 3424m (11,234feet) |
| Res Max Length: | 2.24km (01.39miles) |
| Res Max Width: | 1.48km (00.92miles) |
Lake Ancascocha (possibly from Quechua anqas blue, qucha lake) is a lake in Peru located in the Ayacucho Region, Lucanas Province, Chaviña District, and in the Parinacochas Province, Coracora District. It is situated at a height of approximately 3424m (11,234feet), about 2.24 km long and 1.48 km at its widest point.
The Ancascocha Dam was erected at the southern end of the lake. It is 13m (43feet) high. The reservoir has a capacity of 15000000m2.