Yauyos Province
Qiwllaqucha (Quechua "qillwa, qiwlla, qiwiña" gull, "qucha" lake, "gull lake", hispanicized spelling "Quiulacocha, Quiullacocha") is a lake in Peru located in the Lima Region, Yauyos Province, Tomas District. It is situated at a height of about , about 1.14 km long and 0.34 km at its widest point. Qiwllaqucha lies in the north of the district, south of the lakes Qarwaqucha and Wichqaqucha and north west of the lakes Pachas and Kunturmach'ay.