The longest river in South Africa is the Orange River, also known as the Gariep or Groote River. It runs an incredible 2,200 kilometers, and has a basin area of 973,000 square kilometers.
The Orange River is located in the veld region of South Africa. It connects the Indian Ocean on the east with the Atlantic Ocean on the west of the land. Part of the river forms the border between South Africa and Namibia.
The Orange River transverses such a great distance that it crosses into many regions. Depending on the region, it is often called a different name, like the Gariep River.