Mantaro River
| Mantaro River | |
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| Country | Peru |
|---|---|
| Tributaries | |
| - left | Cunas River |
| - right | Ichhu River, Kachimayu |
| Source | Lake Junin |
| Mouth | Ene River |
| - coordinates | 12°15′46″S 73°58′44″W / 12.26278°S 73.97889°WCoordinates: 12°15′46″S 73°58′44″W / 12.26278°S 73.97889°W |
| Length | 470 km (292 mi) |
| Basin | 15,410 km2 (5,950 sq mi) |
 Map of large rivers in south-central Peru (only the lower section of Mantaro River is highlighted)
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The Mantaro River (Spanish: Río Mantaro, Quechua: Hatunmayu) is a long river running through the central region of Peru. Its Quechua name means "great river". The word "Mantaro" may be a word originally from the Ashaninka language, who live downstream along the Ene River. The Mantaro, along with the Apurimac River, holds the distinction of being the source of the Amazon River, depending on the criteria used for definition.
The river nominally has its source at Lake Junin at a height of 4,080 m, but tributaries above Lake Junin extend as much as 70 km farther upstream, for a total length of 808 km. The river runs through the provinces Junín, Yauli, Jauja, Concepción and Huancayo in the Junín Region, then through the Huancavelica Region and the Ayacucho Region. The river then returns to the Junín Region in Satipo Province, where it unites with the Apurimac River to form the Ene River. Its hydrographic basin also includes some of the Pasco Region. The river belongs to the hydrographic basin of the Amazon River. Its principal tributaries are the Cunas River, the Vilca/Moya River, the Ichhu River, and the Kachimayu.
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