The Caleufu is possibly one of the most beautiful rivers in northern Patagonia. This river’s 40-mile flow starts at the junction of the Meliquina and Filo Hua-Hum Rivers and ends at the Piedra del Aquila Reservoir. It begins as a mountain stream running through a canyon with unique rock formations, and it gradually gives way to an open valley in a desert environment. From the beginning of the season thru early January the river is floatable and offers great quality fishing. The Caleufu is the only river in the region that holds more browns than rainbows. Browns over 20 inches are frequently caught. By early January the flow reaches a level where the river is no longer floatable. However, in late January/ early February the river begins experiencing the same minnow migration as the Collon Cura. Wade fishing is available on the last half dozen riffles prior to the outlet at the reservoir.