The Chiriaco (from Quechua Chiri Yaku, chiri cold, yaku water, "cold water")[1] is a river in Peru.

It is a tributary of the Marañón and takes the Tuntungos, Shushug and Wawas as principal tributaries.

In 2016, a large oil spill from Petroperú's pipeline contaminated the Chiriaco.

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