 In the south of the reserve the landscape known as is less hot and humid, with average temperature values of 18.5 °C.The Reserve is located mainly in the upper or middle sectors of the tributaries of the Ucayali river basins (on the left bank), Pachitea and Pichis (on the right bank).The southern part of the reserve is located between the upper sectors of the tributaries of the Pichis, Ucayali and Unini rivers.