The Andijan Dam is a

buttress dam A buttress dam or hollow dam is a dam with a solid, water-tight upstream side that is supported at intervals on the downstream side by a series of buttresses or supports. The dam wall may be straight or curved. Most buttress dams are made of reinfor ...

on the river

Kara Darya The Kara Darya ( ky, Кара-Дарыя, Kara-Daryya, قارا-دارىيا; uz, Qoradaryo, ''Қорадарё'', قارەدەريا , russian: Карадарья, Karadar'ya - literally ''black river'')''Darya'' means "river", so Kara Darya '' ...

near

Andijan Andijan (sometimes spelled Andijon or Andizhan in English) ( uz, Andijon / Андижон / ئەندىجان; fa, اندیجان, ''Andijân/Andīǰān''; russian: Андижан, ''Andižan'') is a city in Uzbekistan. It is the administrative, ...

Andijan Region Andijan Region ( Uzbek: Andijon viloyati/Андижон вилояти, ئەندىجان ۋىلايەتى, russian: Андижанская область) is a region of Uzbekistan, located in the eastern part of the Fergana Valley in far easte ...

Uzbekistan Uzbekistan (, ; uz, Ozbekiston, italic=yes / , ; russian: Узбекистан), officially the Republic of Uzbekistan ( uz, Ozbekiston Respublikasi, italic=yes / ; russian: Республика Узбекистан), is a doubly landlocked cou ...

. Its reservoir covers and stretches into neighboring

Osh Region Osh Region ( ky, Ош облусу, translit=Osh oblusu; russian: Ошская область, Oshskaya oblast) is a region (''oblast'') of Kyrgyzstan. Its capital is Osh, which is not part of the region. It is bounded by (clockwise) Jalal-Abad Re ...

Kyrgyzstan Kyrgyzstan,, pronounced or the Kyrgyz Republic, is a landlocked country in Central Asia. Kyrgyzstan is bordered by Kazakhstan to the north, Uzbekistan to the west, Tajikistan to the south, and the People's Republic of China to the east. ...

. The dam serves several purposes to include

irrigation Irrigation (also referred to as watering) is the practice of applying controlled amounts of water to land to help grow Crop, crops, Landscape plant, landscape plants, and Lawn, lawns. Irrigation has been a key aspect of agriculture for over 5,00 ...

in the

Fergana Valley The Fergana Valley (; ; ) in Central Asia lies mainly in eastern Uzbekistan, but also extends into southern Kyrgyzstan and northern Tajikistan. Divided into three republics of the former Soviet Union, the valley is ethnically diverse and in the ...

and

hydroelectric Hydroelectricity, or hydroelectric power, is electricity generated from hydropower (water power). Hydropower supplies one sixth of the world's electricity, almost 4500 TWh in 2020, which is more than all other renewable sources combined and ...

power production. Water released from the dam can enter a canal on either side of the river downstream. The dam has two power stations located at its base, Andijan 1 and Andijan 2. The former contains four 35 MW turbine-generators and the latter contains two 25 MW

Francis turbine The Francis turbine is a type of water turbine. It is an inward-flow reaction turbine that combines radial and axial flow concepts. Francis turbines are the most common water turbine in use today, and can achieve over 95% efficiency. The proces ...

-generators for a total installed capacity of 190 MW. Construction on the dam began in 1969 and the generators in Andijan 1 were commissioned between 1974 and 1984. Construction on Andijan 2 began in 2007 and it was commissioned on 2 September 2010. It cost US$28.5 million of which US$15.93 million was supplied by the

Exim Bank of China The Export–Import Bank of China (Chexim - China Exim Bank) () is one of two institutional banks in China chartered to implement the state policies in industry, foreign trade, economy, and foreign aid to other developing countries, and prov ...

. The artificial lake created by this dam is the Andijan Reservoir (also: ''Kampyrravat Reservoir'' or ''Karadarya Reservoir''). It is fed by the Kara Darya and its tributaries

Kurshab Kurshab (established as ''Pokrovskoye'', before 2004: ''Leninskoye'') is a large village in Osh Region of Kyrgyzstan. It is part of the Özgön District. Its population was 20,471 in 2021. It is situated near the river Kurshab, between the cities ...

and Jazy.

References

{{stack, {{Portal, Uzbekistan, Water, Renewable energy Dams in Uzbekistan Buttress dams Dams completed in 1984 Dams in the Aral Sea basin Hydroelectric power stations built in the Soviet Union Hydroelectric power stations in Uzbekistan Andijan Region Osh Region Energy infrastructure completed in 1984 Energy infrastructure completed in 2010