What is "quylluqucha"

Quylluqucha ( Quechua quyllu impeccable white; generic name for a kind of potatoes, qucha lake, hispanicized spelling Coyllococha) is a lake in Peru located in the Junín Region, Huancayo Province, Chongos Alto District. It is situated at a height of approximately , about 4.15 km long and 1.45 km at its widest point. Quylluqucha lies southwest of Yuraqqucha and Wich'iqucha. It belongs to the watershed of the Mantaro River.

The lake is sometimes also named Quyllurqucha (Quechua quyllur star, "star lake", hispanicized Coyllorcocha). This name correlates with the name of mountain at the western end of the lake whose name is Quyllur (Coyllor).

In 1999 the Quyllurqucha dam (Coyllorcocha) was erected at the northeastern end of the lake at . It is high. It is operated by Electroperu.