Location of Dukan Dam
Location As Sulaymaniyah Governorate, Iraq
Coordinates 35°57′15″N 44°57′10″ECoordinates: 35°57′15″N 44°57′10″E
Status Operational
Construction began 1954
Opening date 1959
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Dam and spillways
Type of dam Cylindrical arch
Height 116.5 m (382 ft)
Length 360 m (1,180 ft)
Crest width 6.2 m (20 ft)
Base width 34.3 m (113 ft)
Volume 370,000 m3 (480,000 cu yd
)
Crest elevation 516 m (1,693 ft)
Impounds Little Zab
Spillways 2
Type of spillway 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)
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Reservoir
Creates Lake Dukan
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)
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Power station
Hydraulic head 95 m (312 ft) (rated)
Turbines 5 x 80 MW Francis-type[2]
Installed capacity 400 MW
