Kayrakkum Dam

The Kayrakkum Dam (Russian: Кайраккумская ГЭС; Tajik: НБО Қайроққум), also spelt variously as Kayrakum, Kairakum, Qayraqqum or Qayroqqum, is an embankment dam on the Syr Darya River near the town of Kayrakkum in Sughd Province, Tajikistan. It is situated on the western edge of the Fergana Valley and creates Kayrakkum Reservoir. The reservoir supplies water for irrigation, primarily in Uzbekistan downstream, and hydroelectric power production.[1] The reservoir is also a Ramsar site. The dam's power station has an installed capacity of 126 MW and is operated by Barki Tojik.[2] Construction on the dam began in 1952. It began to impound its reservoir in 1956 and the first two generators were commissioned that year. The other four were operational in 1957 and the project was complete in 1959.[3] The power station is currently undergoing a rehabilitation which should be completed in 2020. Two new and larger turbines will increase the installed capacity to 142 MW.[4][5]

Kayrakkum Dam
Kayrakkum Dam is located in Tajikistan
Kayrakkum Dam
Location of Kayrakkum Dam in Tajikistan
CountryTajikistan
LocationKayrakkum Ghafurov District, Sughd Province
Coordinates40°16′37.27″N 69°48′58.02″E
PurposeIrrigation, power
StatusOperational
Construction began1952
Opening date1959 (1959)
Dam and spillways
Type of damEmbankment
ImpoundsSyr Darya River
Height32 m (105 ft)
Length1,202 m (3,944 ft)
Elevation at crest351.5 m (1,153 ft)
Spillway capacity3,960 m3/s (140,000 cu ft/s)
Reservoir
CreatesKayrakkum Reservoir
Total capacity4,200,000,000 m3 (3,400,000 acre⋅ft)
Active capacity2,300,000,000 m3 (1,900,000 acre⋅ft)
Inactive capacity1,900,000,000 m3 (1,500,000 acre⋅ft)
Catchment area136,000 km2 (53,000 sq mi)
Surface area513 km2 (198 sq mi)
Normal elevation347.5 m (1,140 ft)
Operator(s)Barki Tojik
Commission date1956-1957
TypeConventional
Turbines6 x 21 MW Kaplan-type
Installed capacity126 MW

The 32 m (105 ft) tall and 1,202 m (3,944 ft) long embankment dam is filled with sand, gravel and rock. Its spillway and power station are co-located on the left side of the dam in a gravity dam section. The spillway contains six maintenance gates and six operational gates with a total discharge capacity of 3,960 m3/s (140,000 cu ft/s). The power station houses six 21 MW Kaplan turbine-generators. Kayrakkum Reservoir has a total storage capacity of 4,200,000,000 m3 (3,400,000 acre⋅ft) and surface of 513 km2 (198 sq mi). Of the total reservoir capacity, 2,300,000,000 m3 (1,900,000 acre⋅ft) can be used for irrigation downstream and/or power generation. 1,900,000,000 m3 (1,500,000 acre⋅ft) is dead or unusable storage.[3]

See also

References

  1. "Ferghana Valley Water Resources Management Project" (PDF). World Bank. 2005. Retrieved 16 January 2015.
  2. "Hydroelectric Plants in Tajikistan". IndustCards. Retrieved 15 January 2015.
  3. "Kayrakkum Dam Safety Assessment Report" (PDF). GIBB. March 2000. Retrieved 15 January 2015.
  4. "Kajrakkumskaya-GES" (in Russian). Barki Tojik. Archived from the original on 16 May 2014. Retrieved 16 January 2015.
  5. "Tajikistan seeks engineering, implementation consultants to refurbish 126-MW Kayrakkum hydro project". HydroWorld. 24 September 2014. Retrieved 16 January 2015.
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