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Location Peru
Junín Region
Coordinates 12°35′23″S 75°33′14″W / 12.58972°S 75.55389°W / -12.58972; -75.55389Coordinates: 12°35′23″S 75°33′14″W / 12.58972°S 75.55389°W / -12.58972; -75.55389
Max. length 4.15 km (2.58 mi)
Max. width 1.45 km (0.90 mi)
Surface elevation 4,683 m (15,364 ft)
Coyllococha Dam
Dam and spillways
Height 5.5 m (18 ft)
Power Station
Operator(s) Electroperu

Coyllococha (possibly from Quechua quyllu impeccable white; generic name for a kind of potatoes, qucha lake,[1][2]) is a lake in Peru located in the Junín Region, Huancayo Province, Chongos Alto District.[3][4] It is situated at a height of approximately 4,683 metres (15,364 ft), about 4.15 km long and 1.45 km at its widest point. Coyllococha lies southwest of Yurajcocha and Huichicocha. It belongs to the watershed of the Mantaro River.[5]

The lake is sometimes also named Coyllorcocha (possibly from Quechua quyllur star, "star lake"). This name correlates with the name of mountain at the western end of the lake whose name is Coyllor (Quyllur).[4]

In 1999 the Coyllorcocha dam was erected at the northeastern end of the lake at 12°34′49.6″S 75°32′22.6″W / 12.580444°S 75.539611°W / -12.580444; -75.539611. It is 5.5 m (18 ft) high. It is operated by Electroperu.[5]


  1. ^ Teofilo Laime Ajacopa, Diccionario Bilingüe Iskay simipi yuyayk'ancha, La Paz, 2007 (Quechua-Spanish dictionary)
  2. ^ Ficha tecnologías campesinas, Revalorización del saber local, Sistemas locales de clasificación de papas nativas en el microcentro de diversidad del norte de Potosí-Oruro
  3. ^ Map of the area showing "Laguna Coyllococha"
  4. ^ a b - UGEL map of the Huancayo Province (Junín Region) showing "Lago Coyllococha"
  5. ^ a b Obras hidraulicos en la cuenca de Mantaro - fuente : fuente: Electroperu - Inventario proyectos de afianzamiento hidrico Cuenca del Rio Mantaro, 2005