Semenyih Dam is a dam in Hulu Langat District, Selangor, Malaysia. Built in 1985, the dam, with the lovely lake surrounded by green forested hills, provides one of the most breathtaking sights in the country. It also supplies a major portion of drinking water to the Klang Valley population. Semenyih Dam also has become popular with angling enthusiasts, especially on weekends. Station Custodian Jabatan Parit dan Saliran (Drainage & Irrigation Dept) Type Earthfill Station Type Secondary/Auto Location River sub-basin Grid Reference VK732733 Latitude (Deg/Min/Sec) 03 05 08 Longitude (Deg/Min/Sec)101 53 21 Height 49m Date Equipment Inst Manual - 08/1990 Auto - 08/1990 Operation Period Start Date Current Equipment S8 & HL Status In Operation See also 1998 Klang Valley water crisis 1985 establishments in Malaysia Dams in Selangor Dams completed in 1985 Hulu Langat District