Lake Kopa (Kazakh: Қопа, Qopa; [qopɑ]) is a lake in the city of Kokshetau, located on the territory of Akmola Region close to the foot of Kokshetau Elevation in the northern part of Kazakhstan.

The total surface area of it the lake is about 14 km2 (5.4 sq mi) depending on water level.

[4] The northern and eastern shores of the lake are low, flat, and overgrown with vegetation, meaning that the water surface of the lake is basically open only along the western and northern stretches.

[5] The lake bottom is viscous, smooth, and covered with a layer of silt clay, loam, and sand, it averages 2 metres (6 ft 7 in), but can reach a depth of as much as 6 metres (20 ft) in the northern part.

[4] In 1955, the volume of water in the lake was 39,200,000 cubic metres (1.38×109 cu ft), with a surface area of 13.6 square kilometres (5.3 sq mi).