Kapchagay or Qapshaghay Reservoir, also known as the Qapshaghay Bogeni Reservoir and sometimes referred to as Lake Kapchagay, is a major reservoir in Almaty Region in southeastern Kazakhstan, approximately 80 km (50 mi) north of Almaty. The 140 km (87 mi) long lake is formed by the Kapchagay Dam on the Ili River which flows from the mountains in the east towards Lake Balkhash to the northwest. The dam and reservoir are named for the "narrow gorge" that preceded their construction; Iliysk—which had to be moved to accommodate the reservoir—was renamed Kapchagay after the dam in 1970; it was subsequently renamed Qonayev in 2022. During the summer months the lake attracts a number of tourists from Almaty, who frequent its beachy shores on the weekends.