| Zainsk Reservoir, Zay Reservoir | |
|---|---|
| Location | Tatarstan |
| Coordinates | 55°16′44″N 52°02′23″E / 55.27889°N 52.03972°ECoordinates: 55°16′44″N 52°02′23″E / 55.27889°N 52.03972°E |
| Type | reservoir |
| Basin countries | Russia |
| Max. length | 12 km (7.5 mi) |
| Max. width | 1.7 km (1.1 mi) |
| Surface area | 20.5 km2 (7.9 sq mi) |
| Average depth | 3.1 m (10 ft) |
| Water volume | 52.3×106 m3 (42,400 acre·ft) |
| Settlements | Zainsk |
Zainsk Reservoir or Zay Reservoir (Russian: Заинское водохранилище, Tatar: Cyrillic Зәй сусаклагычы, Latin Zäy susaqlağıçı) is a reservoir of the Zay River near Zainsk, Tatarstan, Russian Federation. It was filled in 1963 to be a cooling pond for Zainsk TTP. It has surface area 20.5 km², a length 12 km, mean width 1.7 km, mean depth 3.1 m and a volume 63 million cubic meters.