Lake Rivadavia (Lago Rivadavia) is a lake in Chubut Province, Argentina. Lake Rivadavia is the second lake, after Lake Cholila, in the chain of lakes in the Futaleufú River system of Argentina which via Yelcho Lake and the Yelcho River flows into the Pacific Ocean in Chile. Located in the Andes, Lake Rivadavia is of glacial origin and occupies a narrow north to south valley between glaciated peaks. All the lake except the northern tip is in the Los Alerces National Park. Argentina Provincial Highway 71 (RP 71) (unpaved in 2016) follows the eastern coast of the lake. Development consists only of a few campgrounds near the highway.