Step-by-step explanation:
The Orange River, also known as the Gariep River in South Africa, is a large river. For a considerable amount of its length, it serves as the international border between South Africa and Namibia. The Orange River has the following drainage basins:
1. Upper Orange River Basin: The Orange River's headwaters begin in the Lesotho highlands, where it is nourished by several tributaries such as the Caledon River, Makhaleng River, and Malibamatso River. This upper basin includes the hilly regions of Lesotho as well as parts of South Africa's Free State Province.
2. Middle Orange River Basin: As the Orange River travels west, it approaches the arid and semi-arid parts of South Africa's Northern Cape Province. This central encompasses vast stretches of sparsely populated and arid landscapes, including the Augrabies Falls and the Richtersveld.
3.Lower Orange River Basin: Further downstream, the Orange River forms the border between South Africa and Namibia before ultimately reaching the Atlantic Ocean. The lower basin includes the Orange River Mouth and the associated floodplain areas where the river meets the sea.
The Orange River drainage basin covers a large area and has a significant influence on the water resources and ecosystems of the regions it traverses. The river and its tributaries provide water for agriculture, hydroelectric power generation, and support diverse habitats and ecosystems along its course.