Gavoshan Dam is an embankment dam

Embankment dam

An embankment dam is a massive artificial water barrier. It is typically created by the emplacement and compaction of a complex semi-plastic mound of various compositions of soil, sand, clay and/or rock. It has a semi-permanent waterproof natural covering for its surface, and a dense, waterproof...

 on the Gaveh River 40 km (25 mi) south of Sanandaj

Sanandaj

Sanandaj , also Romanized as Senneh and Sinneh) is a city in and the capital of Kurdistan Province, Iran. At the 2006 census, its population was 311,446, in 81,380 families....

 in Kordestan province, Iran

Iran

Iran , officially the Islamic Republic of Iran , is a country in Southern and Western Asia. The name "Iran" has been in use natively since the Sassanian era and came into use internationally in 1935, before which the country was known to the Western world as Persia...

. It was created for the primary purpose of irrigation but also supports an 11 MW hydroelectric power station. Water from the dam's reservoir

Reservoir

A reservoir , artificial lake or dam is used to store water.Reservoirs may be created in river valleys by the construction of a dam or may be built by excavation in the ground or by conventional construction techniques such as brickwork or cast concrete.The term reservoir may also be used to...

 is transferred for irrigation in Kordestan and Kermanshah province

Kermanshah Province

Kermanshah Province is one of the 31 provinces of Iran. The province was known from 1969 to 1986 as Kermanshahan and from 1986 to 1995 as Bakhtaran.-Counties:...

s via 20 km (12 mi) conveyance tunnel. About 189000000 cubic metre can be transferred annually for the irrigation of 310 km² (119.7 sq mi). Additionally, water from the reservoir is used to provide drinking water for the city of Kermanshah

Kermanshah

Kermanshah is a city in and the capital of Kermanshah Province, Iran. At the 2006 census, its population was 784,602, in 198,117 families.The overwhelming majority of Kermanshahi people are Shi'a Muslims...

 in the amount of 63000000 cubic metre annually. Construction on the dam began in 1992 and was completed in 2004. It was inaugurated by Iran's President Mohammad Khatami

Mohammad Khatami

Sayyid Mohammad Khātamī is an Iranian scholar, philosopher, Shiite theologian and Reformist politician. He served as the fifth President of Iran from August 2, 1997 to August 3, 2005. He also served as Iran's Minister of Culture in both the 1980s and 1990s...

on 13 February 2005.