The Sewa River is the most important commercial stream in Sierra Leone, West Africa. Formed by the junction of the Bagbe and Bafi rivers, which rise in the northeastern part of the country near the Guinea border, it flows 150 miles (240 km) in a south-southwesterly direction and drains an area of 5,460 square miles (14,141 square km). The Sewa joins the Waanje River 30 miles (48 km) east-southeast of Bonthe to form the Kittam, a distributary that empties into the Atlantic via the Sherbro Strait. The Sewa’s upper reaches are extensively panned for diamonds.
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