Iran–Turkmenistan Friendship Dam
Location of Iran–Turkmenistan Friendship Dam in Iran
Official name	Doosti Reservoir Dam
Country	Iran/Turkmenistan
Coordinates	35°56′55″N 61°09′48″E / 35.94861°N 61.16333°E / 35.94861; 61.16333
Status	Operational
Opening date	2005
Owner(s)	Turkmenistan: Ministry of Water & Land Reclamation Iran: Razavi Khorasan Regional Water Authority
Dam and spillways
Type of dam	Embankment, earth-fill
Impounds	Hariroud (Hari River)
Height	78 m (256 ft)
Length	655 m (2,149 ft)
Width (crest)	15 m (49 ft)
Dam volume	4,500,000 m3 (5,885,778 cu yd)[1]
Spillway type	8 x gated ogee
Reservoir
Total capacity	1,250,000,000 m3 (1,013,391 acre⋅ft)
Active capacity	735,000,000 m3 (595,874 acre⋅ft)
Inactive capacity	300,000,000 m3 (243,214 acre⋅ft)
Power Station
Turbines	3 x Francis-type
Installed capacity	16 MW[2]

The Iran–Turkmenistan Friendship Dam or Doosti Reservoir Dam (Persian: سد دوستی, Turkmen: Dostluk Suw Howdany) 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.^[3] It was officially opened on 12 April 2005.^[4] The dam provides drinking water and irrigation for the surrounding areas along with hydroelectric power.^[4]

• Syria–Turkey Friendship Dam
• List of dams and reservoirs in Iran
• Dams in Iran

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