Yanamayo (possibly from Quechua yana black, mayu river,[1] "black river") is a river in the Ancash Region in Peru. It flows along the border between the provinces Carlos Fermín Fitzcarrald and Mariscal Luzuriaga and empties into the Marañón River as a left tributary. The confluence is on the border of the districts Eleazar Guzman Barron, San Nicolás and Canchabamba.[2]
| Yanamayo | |
|---|---|
 Suspension bridge of Pucayacu across the river Yanamayo which connects the districts Llama and Yauya | |
| Etymology | Quechua |
| Location | |
| Country | Peru |
| Region | Ancash Region, Huánuco Region |
| Physical characteristics | |
| Mouth | Marañón River |
| Basin features | |
| Tributaries | |
| • left | Pomapampa, Pampachara |
| • right | Tinkuq, San Nicolás |