River Basin

The highlands of Lesotho, the source of the Orange-Senqu River.

Augrabies Falls, on the lower reaches of the Orange-Senqu River, South Africa.

Irrigated agriculture is the single largest water user in the basin.

Golden Gate Park, South Africa.

Longitudinal profile of the main-stem of the Orange-Senqu River.

Map of relief in the Orange-Senqu River basin.

Makhaleng River Gorges in the Highlands of Lesotho.

Pedosphere, the intersection between the Atmosphere, Biosphere, Hydrosphere and Lithosphere.

Lightning during a storm on the Lower Orange River.

The climate of Orange-Senqu River basin varies from snow in the winter in Lesotho...

Sunset in the Kalahari.

The Hydrologic (Water) Cycle.

The climate of the Orange-Senqu River basin is highly variable.

An example of a B climate type - Sossusvlei Namibia.

An example of a C climate type - Lesotho highlands.

Southern Botswana receives very little annual rainfall.

Dams such as Vanderkloof can provide a buffer in drought conditions.

The altitude and mountains of the Lesotho Highlands ensure a temperate climate.

The arid Nama Karoo.

Climate change will alter the availability of water.