THE SENNAR DAM NEARING COMPLETION. The dam has a total length of 9,925 feet, of which 4,600 feet consist of earth embankments with masonry core walls. The maximum height of the dam above the level of the foundations is 130 feet, and the greatest width at the bottom is 90 feet. The dam tapers to a width of 23 feet on the crest. A railway line has been laid along the top. The total weight of the structure is 1,000,000 tons. The flow of the stream is controlled by eighty sluices.
CLOSING THE UPSTREAM SUDD of the deep channel on December 19, 1923. The materials used in building the sudds included 70,000 cubic yards of rock and conglomerate, 5,425,000 sandbags filled with earth, 41,200 cubic yards of granite rubble and 785,400 cubic yards of sand and silt pumped by dredgers.