The Masjed Soleyman Dam (also known as Godar-e Landar Dam) is a dam in Iran on the Karun river. It is 177 metres (581 ft) high, has an installed capacity of 2,000 MW, and its reservoir holds 261,000,000 cubic metres (212,000 acre⋅ft) of water. The dam is a rock-fill structure with a vertical clay-core. The dam was built by Iran Water and Power Resources Development Co. and completed in 2002. The power station was built in two 1,000-MW stages. The first stage was complete in 2003 and the second in September 2007.^[2][3] The dam was named after the town of Masjed-Soleyman, about 25 kilometres (16 mi) away. The spillway gates are believed to be the largest of their kind in the world.^[4]

Masjed Soleyman Dam
Location of Masjed Soleyman Dam in Iran
Location	Masjed-Soleyman, Iran
Coordinates	32°01′40″N 49°24′01″E / 32.02778°N 49.40028°E / 32.02778; 49.40028
Construction began	1991
Opening date	2002
Operator(s)	IWPRDC
Dam and spillways
Type of dam	Rockfill dam
Impounds	Karun River
Height	164 m (538 ft)
Height (foundation)	177 m (581 ft)
Length	497 m (1,631 ft)
Width (crest)	15 m (49 ft)
Width (base)	780 m (2,560 ft)
Dam volume	13,500,000 m3 (17,700,000 cu yd)
Spillway type	Gated
Spillway capacity	21,700 m3/s (770,000 cu ft/s)
Reservoir
Total capacity	261,000,000 m3 (212,000 acre⋅ft)
Catchment area	27,548 km2 (10,636 sq mi)
Surface area	7.49 km2 (2.89 sq mi)
Maximum length	27 km (17 mi)
Normal elevation	372 m (1,220 ft)
Power Station
Commission date	December 2002 - September 2007
Hydraulic head	140 m (460 ft)
Turbines	8 x 250 MW Francis-type
Installed capacity	2,000 MW
Annual generation	3,700 GWh[1]