The Iran–Turkmenistan Friendship Dam or Doosti Reservoir Dam (, ) is a dam on the Hari River (Hariroud), which forms part of the international boundary between Iran and Turkmenistan (Iran-Turkmenistan border). The dam was completed in 2004, and both countries agreed that each would have an equal right to the waters of the river, which amount to 820 million cubic metres. It was officially opened on 12 April 2005. The dam provides drinking water and irrigation for the surrounding areas along with hydroelectric power. See also Syria–Turkey Friendship Dam List of dams and reservoirs in Iran Notes Dams in Iran Dams in Turkmenistan Iran–Turkmenistan border Dams completed in 2005 Hydroelectric power stations in Iran Hydroelectric power stations in Turkmenistan Earth-filled dams Iran–Turkmenistan relations