The Sahel
The Sahel, which is derived from the Arabic word sahil, meaning "shore" or "border," is a dry savanna zone between the Sahara Desert in the north and wetter savanna zones in the south. It stretches from the Atlantic Ocean in the west to the Horn of Africa in the east. All of northern Senegal is within the Sahel, and aside from scattered acacia trees, there is little vegetation, especially during the dry season. Due to overgrazing by the goats and cattle of the tribal groups that live there, the Sahel is expanding, growing wider each year. As a result, more and more cropland is being lost to desertification.The Sahel is characterized by little rainfall, averaging only between six and 20 inches (150 and 500 millimeters) per year. Most of the rain falls in the rainy season from June through October. There are cyclical periods when the Sahel experiences higher than normal rainfall. During...












