Orange River in Southern Africa

Orange River, river in southern Africa, one of the longest rivers on the continent and one of the longest south of the Tropic of Capricorn. After rising in the Lesotho Highlands, less than 125 miles from the Indian Ocean, the river flows to the Atlantic Ocean in a generally westerly direction for some 1,300 miles. The Orange traverses the veld region of South Africa, after which it defines the southern limit of the Kalahari and bisects the southern Namib before draining into the Atlantic at Alexander Bay, S.Af. Along its course the river forms the eastern boundary of the South African province of Free State, as well as the boundary between Namibia and South Africa.