Dukan Dam

Dukan (Dokan) Dam
Location of Dukan (Dokan) Dam in Iraq
Location	As Sulaymaniyah Governorate, Kurdistan Region
Coordinates	35°57′15″N 44°57′10″E / 35.95417°N 44.95278°E / 35.95417; 44.95278
Status	Operational
Construction began	1954
Opening date	1959
Operator(s)	Ministry of Water Resources
Dam and spillways
Type of dam	Cylindrical arch
Impounds	Little Zab
Height	116.5 m (382 ft)
Length	360 m (1,180 ft)
Elevation at crest	516 m (1,693 ft)
Width (crest)	6.2 m (20 ft)
Width (base)	34.3 m (113 ft)
Dam volume	370,000 m3 (480,000 cu yd)
Spillways	2
Spillway type	Service: Tunnel Emergency: Bell-mouth
Spillway capacity	Service: 2,450 m3/s (86,521 cu ft/s) Emergency: 1,860 m3/s (65,685 cu ft/s)
Reservoir
Creates	Lake Dukan
Total capacity	6,970,000,000 m3 (5,650,671 acre⋅ft)[1]
Active capacity	6,100,000,000 m3 (4,945,350 acre⋅ft)
Inactive capacity	790,000,000 m3 (640,463 acre⋅ft)
Catchment area	11,690 km2 (4,514 sq mi)
Surface area	270 km2 (104 sq mi)
Normal elevation	511 m (1,677 ft)
Power Station
Commission date	1979
Hydraulic head	95 m (312 ft) (rated)
Turbines	5 x 80 MW Francis-type[2]
Installed capacity	400 MW

The Dukan Dam (Sorani Kurdish: بەنداوی دووکان Arabic: سد دوكان) is a multi-purpose concrete arch dam in As Sulaymaniyah Governorate, Kurdistan Region of Iraq. It impounds the Little Zab, thereby creating Lake Dukan. The Dukan Dam was built between 1954 and 1959 whereas its power station became fully operational in 1979. The dam is 360 metres (1,180 ft) long and 116.5 metres (382 ft) high and its hydroelectric power station has a maximum capacity of 400 MW.