The Lake Chad basin, located in Northern Central Africa, covers almost 8% of the continent and spreads over seven countries. It is shared among the countries of Algeria, Cameroon, Central African Republic (CAR), Chad, Libya, Niger, Nigeria, Sudan, Algeria and Libya.
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.
Despite its recent economic progress, Mozambique remains one of the lowest income countries in the world. Majority of the Mozambicans 80% live in rural areas where agriculture and livestock are of central importance to their livelihoods.
The North-Western Sahara Aquifer System (NWSAS) covers a total area of over one million km2: 700 000 km2 in Algeria, 80 000 km2 in Tunisia and 250 000 km2 in Libya.
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.
Zimbabwe is a semi-arid country heavily reliant on regular rains. Like the rest of southern Africa, Zimbabwe is strongly influenced by fluctuations in rainfall.
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.