خزان أسوان
Construction of the dam began in 1910, and was completed in 1913. The movable portion of the dam is long with 119 separate rectangular, steel-skin plated, sliding gates. The gates are either installed or removed and river flow is controlled by the number of gates installed. They are removed by a gantry crane that travels on the service bridge above the dam. At the time it was completed it was second in length only to the Aswan Low Dam on the Nile River.