Disjunct localized populations are in northern Peru along river headwaters, (the confluence region of the Ucayali River).

After its confluence with Ucayali River, the Marañón is given the name of the Amazon River.

The province of Coronel Portillo east of the Ucayali River.

The Ucayali River passes through the department and is the most important mode of transportation.

It lies several kilometres east of the flow of the Ucayali River.

Global increases in energy and food prices have increased due to deforestation and erosion along the Ucayali River.

Yarinaqucha lies west of the Ucayali River and north-west of Pucallpa.

Peru (near Ucayali River): positively sassed in 1927.

Located in the Amazon rainforest, its name is derived from the Ucayali River.

It is not found south of the Amazon or the Ucayali Rivers.