The Calle-Calle River Basin is located in the southern region of Chile, primarily within the Los Ríos Region. This basin is characterized by its diverse ecosystems, including forests and wetlands, which support a variety of wildlife. The river itself flows through the city of Valdivia, playing a crucial role in the local economy and culture. The basin is significant for its hydrological resources, providing water for agriculture and industry. It also serves as a recreational area, attracting visitors for activities like fishing and kayaking. Conservation efforts are in place to protect the unique environment of the Calle-Calle River Basin.