The Chanchamayo River (possibly from Quechua chanchay to walk and leap about, to walk quickly and confused, chancha chancha to walk quickly and irregularly, shancha a kind of bird, mayu river,Teofilo Laime Ajacopa, Diccionario Bilingüe Iskay simipi yuyayk'ancha, La Paz, 2007 (Quechua-Spanish dictionary): chanchay - intr. Ir a saltos. mayu - s. Río.Diccionario Quechua - Español - Quechua, Academía Mayor de la Lengua Quechua, Gobierno Regional Cusco, Cusco 2005: chancha chancha - adj. Caminar rápido, apresurado, con pasos irregulares Chanchaymayu - s. Geog. (Topón. shancha gallinácea plomiza; mayu río). chanchay - v. Caminar apresurada y confusamente.) is a river in the Junín Region in Peru. It originates in the Huaytapallana mountain range where it is named Tulumayu. The Chanchamayo flows along the town of La Merced, which is also called Chanchamayo. After joining Paucartambo River, it is called Perené River.chanchamayo.info
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