Astana Dam

Arnasai reservoir (Vyacheslav reservoir) — an artificial water body in the Esil basin.

Geographical location

Located about 3 km east of the village of Arnasai in the Arshaly district of Akmola region, and about 45 km southeast of Astana city.

Hydrological characteristics

The area of the water body is 60.7 km², length is 11.2 km, width is 9.8 km, average depth is 6.3 m, maximum depth is 25 m. Water capacity is 410 million m³, catchment area is 447 km², shoreline length is 80 km. Its water is used for irrigation of fields (3.7 thousand ha), watering pastures, and supplying water to industrial enterprises. Arnasai reservoir is considered the main water source providing drinking water to Astana city.