Masinga Hydroelectric Power Station, also Masinga Dam, is an embankment dam on the Tana River, the longest river in Kenya and straddles the border of Embu and Machakos Counties in Eastern Province and is located about 106 km. (66 mi.), by road, northeast of Nairobi, Kenya's capital and largest city. Construction of the dam began in 1978, and was completed in 1981. It is owned by Tana and Athi Rivers Development Authority (TARDA). The dam is used for power production and is part of the Seven Forks Scheme.