Sergeyev Dam or Sergeyevka Dam (Kazakh: Сергеев бөгені; Russian: Сергеевское водохранилище) is a gravity dam in Shal akyn District, North Kazakhstan Region, Kazakhstan.^[2][3]

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Sergeyev Dam
Sergeyev Reservoir Sentinel-2 image. Lake Kishi Torangyl is on the right.
Location of Sergeyev Dam in Kazakhstan
Official name	Сергеев бөгені
Country	Kazakhstan
Location	Shal akyn District, North Kazakhstan Region
Coordinates	53°42′08″N 67°17′03″E
Purpose	Power and water supply
Opening date	1969; 55 years ago (1969)[1]
Owner(s)	RSE "Kazvodkhoz"
Dam and spillways
Type of dam	Earth, concrete
Impounds	Imanburlyq, Ishim River
Height	150 m (490 ft)
Reservoir
Creates	Sergeyev Reservoir
Total capacity	693,000,000 m3 (562,000 acre⋅ft)
Surface area	117 km2 (45 sq mi)
Maximum length	75 km (47 mi)
Maximum width	7 km (4.3 mi)
Normal elevation	138 m (453 ft)
Type	Conventional
Turbines	2

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The dam is located a little upstream from Sergeyev town on the Ishim River.^[2] It has a road bridge, as well as a pumping station for the Sergeev city water supply, which is part of the Ishim Water Supply Network (Kazakh: Есіл су құбыры) that operates in the North Kazakhstan and Akmola Regions.^[4]

The Sergeyevka Dam was commissioned in 1968 at the time of the Kazakh SSR. It had a hydroelectric power station with an installed power generation capacity of 2 MW. The hydroelectric power station building has a bottom spillway. The reservoir of the dam has a maximum storage capacity of 693,000,000 m³ (562,000 acre⋅ft) and a surface area of 117 km² (45 sq mi). The Imanburlyq, a tributary of the Ishim River, has its mouth in the reservoir.^[3]

Currently the power station has a capacity of 3.5 MW with two propeller turbines connected to VGSP 213/29-14 generators with a capacity of 1.23 MW each. The average annual electricity generation is 16 million kWh. The dam is owned by RSE "Kazvodkhoz", which manages 78 reservoirs in Kazakhstan.^[1]

• List of dams and reservoirs