The River Senegal is a major river in West Africa, flowing approximately 1,086 kilometers (675 miles) from the Fouta Djallon highlands in Guinea to the Atlantic Ocean. It forms part of the border between Senegal and Mauritania and is vital for agriculture, fishing, and transportation in the region. The river's basin supports diverse ecosystems and is home to various wildlife species. It also plays a crucial role in the economy of the surrounding countries, providing water for irrigation and serving as a source of hydroelectric power through dams like the Manantali Dam.