Orto-Tokoy Reservoir is located in the Chu River Valley and regulates the flow of the Chu River into the Boom Gorge and the Chuy Valley. Naturally, the water level depends on the season and traditionally drops by autumn due to high water demand during the summer months. Because of the high elevation, the reservoir rarely warms up enough for comfortable swimming. Nevertheless, it can be an interesting stop on the way to Issyk-Kul or toward Naryn, offering impressive views of a vast body of water surrounded by majestic mountains.