Cameroon lies between 2° and 13° north latitude and between 8° and 16° east longitude in west central Africa. The country has a total land area of about 475,440 sq. km and a coastline of 402 km and its climate varies with the terrain. This is characterized by high year-round temperatures and the weather is controlled by equatorial and tropical air masses.
The Limpopo basin is located in Southern Africa and covers an area of 416,296 km2, spreading over four countries: Botswana, Mozambique, South Africa and Zimbabwe.
Rwanda, with an estimated population of over 9 million inhabitants has a surface area of 26,338 sq. km, which makes it the most densely populated country in Africa with about 397 inhabitants/sq. km.
Burkina Faso is situated in the Sahelian zone, experiences high temperatures, unpredictable and variable rainfall. The country's surface area is 274,200 km² with altitudes between 150 and 750 metres above sea level.
Ghana lies along the Gulf of Guinea in West Africa. The country extends inland to about latitude 11° north covering a distance of 672 km from south to north.
With a surface area of 27,834 square km², Burundi is located between the 29° and 30°25 eastern meridians and between the 2°20 and 4°25 southern parallels. Burundi’s population is estimated at 8 million inhabitants.
Tunisia is located in North Africa, between longitudes 7° and 12° East and latitudes 32° and 38° North. It is at the junction of the West and East Mediterranean, and covers a 164.000 km2 surface.
With 34% annual tributary flow, Kagera is the single largest river that drains into Lake Victoria. On the upper ranges contributing much of the river flow are its main tributaries of Nyabarongo and Ruvuvu.
The Volta River Basin is one of the largest river systems in Africa covering an area of approximately 400,000 km2. The river basin stretches from latitude 5o 30' N in Ghana to 14o 30' N in Mali.