Lake Mamacocha (Quechua mama mother / madam, qucha lake, mama qucha ocean,[2] Mama Qucha) is a lake in Peru located in the Huánuco Region, Huacaybamba Province, Pinra District.

[3] The river Pinra originates in or near the lake.

It is an affluent of the Marañón River.

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This Huánuco Region geography article is a stub.