This project is the first hydropower station constructed on the trunk stream of the Brahmaputra in China. Its general layout is gravity dam and power house at dam toe. It is comprised of right and left water retaining dam sections, overflow dam section, powerhouse dam section, sand-washing bottom-hole dam section, ground powerhouse at dam toe, stilling pool and apron. The elevation of dam foundation building surface is 3198.00m. The maximum dam height is 116m. The total dam crest length is 389.50m. The dam top width is 19.00m and maximum bottom width is 76m.