Description

The Tigre River is born in glaciers at an altitude of about 1,500 metres (4,900 ft) along the border with Chile. From its source, it flows eastward about 30 kilometres (19 mi) to enter the upper end of Lake Cholila.

The outlet at the lower end of the lake is the Carrileufú River (River of Green Waters in the Mapuche language). The highest mountain in Chubut Province is Tres Picos, 2,515 metres (8,251 ft), about 10 kilometres (6.2 mi) west northwest of Lake Cholila.

The Carrileufú River should not be confused with the Carrenleufú or Palena River. Both names derive from the same Mapuche word. Although the lake is not located in a national park, the lake shore is mostly in a natural state. Cattle raising, tourism, and sport fishing are the principal occupations of the sparsely populated region.