Canals

The Gezira model: one canal, a grid of laterals, and 880,000 hectares of irrigated farmland In 1925, a single canal changed the history of central Sudan. The Sennar Dam on the Blue Nile and the network of irrigation channels it fed transformed the Gezira Plain — a flat, semi-arid expanse between the Blue and White Niles — into one of Africa’s most productive agricultural zones. At its peak, the Gezira Scheme irrigated over 880,000 hectares of cotton, sorghum, and wheat, generating a third of Sudan’s export revenues and employing hundreds of thousands of families. The concept was simple: bring water to flat land that already had soil. ...