Geography of Botswana - Orography

Orography

The land is predominantly flat to gently undulating tableland, although there is some hilly country, where mining is carried out. The Kalahari Desert is in the central and the southwest. The Okavango Delta, one of the the world's largest inland deltas, is in the northwest and the Makgadikgadi Pans, a large salt pan lies in the north-central area. The Makgadikgadi has been established as an early habitation area for primitive man; This large seasonal wetland is composed of several large component pans, the largest being Nwetwe Pan, Sua Pan and Nxai Pan. Botswana's lowest elevation point is at the junction of the Limpopo and Shashe Rivers, at a height of 513 m (1,683 ft). The highest point is Monalanong Hill, at 1,494 m (4,902 ft). The country is divided into four drainage regions, which are sometimes indistinct due to the arid nature of the climate:

• the Chobe River on the border with the Caprivi Strip of Namibia together with a small adjacent swampy area is part of the Zambezi basin;
• most of the north and central region of the country is part of the Okavango inland drainage basin;
• the easternmost part of the country falls into the Limpopo drainage basin;
• the southern and southwestern regions, which are the driest of all, are drained by the Molopo river along the South African border and the Nossob river through the Kalahari Gemsbok National Park, and are technically part of the basin of the Orange river. None of these rivers normally flows as far as the Orange, however. (The last recorded confluence was in the 1880s.)

Except for the Chobe, Okavango, Boteti and Limpopo rivers, most of Botswana's rivers cease to flow during the dry and early rainy seasons.