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{{Infobox dam
| name = THC Main Dam
| name_official = Tuyamuyun Hydroengineering Complex
| image =
| image_size =
| image_caption =
| image_alt =
| location_map = Uzbekistan
| location_map_size =
| location_map_caption =
| location_map_alt =
| coordinates = {{coord|41|12|48.14|N|61|24|18.76|E|type:landmark|display=inline,title}}
| country = [[Uzbekistan]]/[[Turkmenistan]]
| location = [[Urgench]], [[Xazorasp District]], [[Xorazm Region]]/[[Dasoguz]], [[Lebap Region]]
| purpose = Irrigation, power
| status = O
| construction_began = 1969
| opening = {{Start date and age|1983}}
| demolished =
| cost =
| owner =
| dam_type = Gravity
| dam_crosses = [[Amu Darya River]]
| dam_length = {{Convert|141|m|ft|abbr=on}}
| dam_height = {{Convert|25|m|ft|abbr=on}}
| dam_height_foundation=
| dam_height_thalweg =
| dam_elevation_crest =
| dam_width_crest =
| dam_width_base =
| dam_volume =
| spillway_count =
| spillway_type =
| spillway_capacity =
| res_name = Channel Reservoir
| res_capacity_total = {{Convert|2300000000|m3|acre.ft|abbr=on}}
| res_capacity_active =
| res_capacity_inactive=
| res_catchment =
| res_surface = {{Convert|303|km2|mi2|abbr=on}}
| res_max_length = {{Convert|102|km|mi|abbr=on}}
| res_max_width =
| res_max_depth =
| res_elevation = {{Convert|130|m|ft|abbr=on}}
| res_tidal_range =
| plant_name =
| plant_coordinates =
| plant_operator =
| plant_commission = 1983
| plant_decommission =
| plant_type =
| plant_turbines = 6 x 25 [[megawatt|MW]]
| plant_hydraulic_head =
| plant_capacity = 150 MW
| plant_annual_gen = 571 GWh<ref>{{cite web|title=Building of Small HPP-2 at Andijan water basin|url=http://webcache.googleusercontent.com/search?q=cache:Dl_jevZMhCsJ:cdm.unfccc.int/UserManagement/FileStorage/ZH2MA4CES1YJ65WRKTGBI9UPXNFQV7+&cd=1&hl=en&ct=clnk&gl=us|publisher=United Nations CDM|accessdate=15 January 2015|date=3 February 2010}}</ref>
| website =
| extra =
}}
The '''Tuyamuyun Hydro Complex''' (THC) is a system of four interconnected [[reservoir]]s and a series of canals on the lower [[Amu Darya River]], bordering [[Uzbekistan]] and [[Turkmenistan]]. Its primary purpose is to provide water for irrigation in Xorazm, [[Karakalpakstan]] and [[Daşoguz Region|Daşoguz]] regions of [[Uzbekistan]], [[Turkmenistan]] and as far north as [[Kazakhstan]].<ref name=regions>{{cite book|last1=Qi|first1=edited by Jiaguo|last2=Evered|first2=Kyle T.|title=Environmental problems of Central Asia and their economic, social and security impacts|date=2008|publisher=Springer|location=Dordrecht, the Netherlands|isbn=1402089600|pages=284-287|url=https://books.google.com/books?id=AOLwNLF_RkUC&pg=PA284&lpg=PA284&dq=tuyamuyun+reservoir&source=bl&ots=xlYYzVUD1V&sig=-8qhnkf5cCQwDiXfypR19hd_hdU&hl=en&sa=X&ei=9862VK77EsKnggSW_YCYCQ&ved=0CEgQ6AEwBw#v=onepage&q=tuyamuyun%20reservoir&f=false|accessdate=14 January 2015}}</ref> The complex is located about {{Convert|74|km|mi|abbr=on}} southeast of [[Urgench]] in [[Xorazm Region]], Uzbekistan and about {{Convert|2|km|mi|abbr=on}} north of [[Gazojak]] in [[Lebap Region]], Turkmenistan.<ref>{{cite book|last1=Olsson|first1=edited by Oliver|last2=Bauer|first2=Melanie|title=Interstate water resource risk management : towards a sustainable future for the Aral Basin (JAYHUN)|date=2010|publisher=IWA Publishing|location=London|isbn=1843393085|pages=87-90|url=https://books.google.com/books?id=_AkmmEztL2kC&pg=PA88&lpg=PA88&dq=tuyamuyun+reservoir&source=bl&ots=_lCb9ObDit&sig=33G15--Dy_T18fPcOdxiQKMYjx4&hl=en&sa=X&ei=9862VK77EsKnggSW_YCYCQ&ved=0CDAQ6AEwAw#v=onepage&q=tuyamuyun%20reservoir&f=false|accessdate=14 January 2015}}</ref> It was constructed between 1969 and 1983. Aside from irrigation, the complex also provides water for industrial and [[municipal water|municipal]] uses. A 150 MW power station on the main dam contains six 25 MW [[hydroelectric]] turbine-generators.<ref>{{cite web|title=Irrigation and Drainage Systems in Khorezm, Uzbekistan|url=http://www.zef.de/fileadmin/webfiles/downloads/projects/khorezm/downloads/Publications/wps/WP12_Awan.pdf|publisher=Zentrum für Entwicklungsforschung Center for Development Research|accessdate=15 January 2015|page=9|date=December 2011}}</ref>

The main dam (THC Main Dam) is located on the Amu Darya, straddling the border of [[Uzbekistan]] and [[Turkmenistan]]. It is the center-piece of the complex. The main dam is a {{Convert|141|m|ft|abbr=on}} long and {{Convert|25|m|ft|abbr=on}} long [[gravity dam]]. It creates the '''Channel Reservoir''' which has a storage capacity of about {{Convert|2300000000|m3|acre.ft|abbr=on}} and length of {{Convert|102|km|mi|abbr=on}}. Water from the Channel Reservoir can be fed into the adjacent '''Kaparas''' and '''Sultansanjar Reservoirs''' for later use. The Sultansanjar Reservoir is connected via a canal to the '''Koshbulak Reservoir''' which lies just east. When first completed, all four reservoirs had a capacity of about {{Convert|7800000000|m3|acre.ft|abbr=on}} but due to silt build-up, this had been reduced to about {{Convert|6700000000|m3|acre.ft|abbr=on}} by 2001. A system of canals off the main dam supply a network of irrigation canals to the various regions for irrigation.<ref name=regions/>

==References==
{{reflist}}

{{stack|{{Portal|Turkmenistan|Uzbekistan|Water|Renewable energy}}}}

[[Category:Dams in Uzbekistan]]
[[Category:Dams in Turkmenistan]]
[[Category:Gravity dams]]
[[Category:Hydroelectric power stations in Uzbekistan]]
[[Category:Hydroelectric power stations in Turkmenistan]]
[[Category:Dams completed in 1983]]
[[Category:Energy infrastructure completed in 1983]]
[[Category:1983 establishments in Uzbekistan]]
[[Category:1983 establishments in Turkmenistan]]
[[Category:Xorazm Region]]
[[Category:Lebap Province]]
[[Category:Hydroelectric power stations built in the Soviet Union]]
[[Category:Dams in the Aral Sea basin]]

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