Marañón River
River in Peru
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The Marañón River is the principal or mainstem source of the Amazon River, arising about 160 km to the northeast of Lima, Peru, and flowing northwest across plateaus 3,650 m high, it runs through ... Wikipedia
Source: Andes
Mouths: Amazon River and Ucayali River
Length: 1,079 mi
Discharge: 401,300 ft³/s
Basin size: 358,000 km2 (138,000 sq mi) to 364,873.4 km2 (140,878.4 sq mi)