Río Damas is a river located in the Los Lagos Region of southern Chile, flowing through one of the country's most scenic and fish-rich landscapes. The river originates in the area known as Quema del Buey, within the commune of Entre Lagos, situated between the renowned Lago Puyehue and Lago Rupanco. From its headwaters, the river flows generally from east to west, traversing the city of Osorno and serving as a natural boundary that separates the Pilauco neighborhood from the rest of the city before emptying into the Río Rahue. This urban and peri-urban character gives Río Damas a distinctive personality among the rivers of the Los Lagos Region — a freestone river that transitions from its rural headwaters through an increasingly developed corridor before reaching its confluence with the Rahue system.