Orroral RiverOrroral River, a perennial stream of the Murrumbidgee catchment within the Murray–Darling basin, is located in the Australian [Capital Territory], Australia.CourseThe river rises in the southern ranges of Namadgi [National Park], south of Canberra, with flow generated by runoff and melting snow during spring from the Snowy Mountains. The river flows generally south-east, joined by one minor tributaries, before reaching its confluence with the Gudgenby River, south of Tharwa, [Australian Capital Territory|Tharwa]; descending over its course.