| Lake Pumacocha | |
| Pushpin Map: | Peru |
| Location: | Peru Junín Region |
| Coords: | -11.7392°N -76.1133°W |
| Length: | 5.44km (03.38miles) |
| Width: | 0.95km (00.59miles) |
| Elevation: | 4265m (13,993feet) |
| Pumacocha Dam | |
| Location Map: | Peru |
| Country: | Peru |
| Dam Height: | 24m (79feet) |
| Dam Length: | 410m (1,350feet) |
| Res Capacity Total: | 28400000m2 |
| Plant Operator: | Centromín Perú |
Pumacocha (possibly from Quechua puma cougar, puma, qucha lake,) is a lake in Peru located in the Junín Region, Yauli Province, Yauli District. It is situated at a height of approximately 4265m (13,993feet), about 5.144 km long and 0.95 km at its widest point. Pumacocha lies northwest of a lake named Huallacocha (possibly from in Quechua Wallaqucha) and southwest of the town of Yauli.
The Pumacocha dam was completed in 1942. It is 410m (1,350feet) long and 24m (79feet) high. It is operated by Centromín Perú. The reservoir has a volume of 438000m2 and a capacity of 28400000m2.