Essay
How Are the Major Rivers in Africa Vital to Its Economy? In terms of total annual runoff (4600 km3) Africa takes third place after Eurasia and South America, and by the thickness of the layer (less than 160 mm) it is inferior to all continents except Australia and Antarctica. The main watershed of the African continent passes through its most elevated eastern edge, so more than 1/3 of the runoff is in the Atlantic Ocean, only about 1/4 in the Indian Ocean, even less - in the Mediterranean Sea. About 1/3 of Africa (about 9 million km2) has ...
