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 A buttress is an architectural structure built against or projecting from a wall which ...

on the river Kara Darya near

Andijan Andijan ( ), also spelt Andijon () and formerly romanized as Andizhan ( ), is a city in Uzbekistan. It is the administrative, economic, and cultural center of Andijan Region. Andijan is a district-level city with an area of . Andijan is the most ...

Andijan Region Andijan Region is a region of Uzbekistan, located in the eastern part of the Fergana Valley in far eastern Uzbekistan. It borders with Kyrgyzstan ( Jalal-Abad and Osh Regions), Fergana Region and Namangan Region. It covers an area of 4,300&nbs ...

Uzbekistan , image_flag = Flag of Uzbekistan.svg , image_coat = Emblem of Uzbekistan.svg , symbol_type = Emblem of Uzbekistan, Emblem , national_anthem = "State Anthem of Uzbekistan, State Anthem of the Republ ...

. Its reservoir, known as the Andijan Reservoir in Uzbekistan and Kempir-Abad Reservoir in Kyrgyzstan, covers and stretches into the neighboring

Osh Region Osh is a Regions of Kyrgyzstan, region of Kyrgyzstan. Its capital is Osh, which is not part of the region. It is bounded (clockwise) by Jalal-Abad Region, Naryn Region, China (Xinjiang), Tajikistan (Districts under Central Government Jurisdiction ...

Kyrgyzstan Kyrgyzstan, officially the Kyrgyz Republic, is a landlocked country in Central Asia lying in the Tian Shan and Pamir Mountains, Pamir mountain ranges. Bishkek is the Capital city, capital and List of cities in Kyrgyzstan, largest city. Kyrgyz ...

. The dam serves several purposes including

irrigation Irrigation (also referred to as watering of plants) is the practice of applying controlled amounts of water to land to help grow crops, landscape plants, and lawns. Irrigation has been a key aspect of agriculture for over 5,000 years and has bee ...

in the

Fergana Valley The Fergana Valley (also commonly spelled the Ferghana Valley) in Central Asia crosses eastern Uzbekistan, southern Kyrgyzstan and northern Tajikistan. Encompassing three former Republics of the Soviet Union, Soviet republics, the valley is e ...

and

hydroelectric Hydroelectricity, or hydroelectric power, is Electricity generation, electricity generated from hydropower (water power). Hydropower supplies 15% of the world's electricity, almost 4,210 TWh in 2023, which is more than all other Renewable energ ...

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 pro ...

-generators for a total installed capacity of 190 MW. Construction on the dam began in 1969 and the generators at Andijan 1 were commissioned between 1974 and 1984. Construction at 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 provided by the

Exim Bank of China Exim is a mail transfer agent (MTA) used on Unix-like operating systems. Exim is a free software distributed under the terms of the GNU General Public License, and it aims to be a general and flexible mailer with extensive facilities for checkin ...

. The artificial lake created by this dam, the Andijan Reservoir, is fed by the Kara Darya and its tributaries Kurshab 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