The Uglich Reservoir has a surface area of 249 km² and a water volume of 1.2 km3. Its length is 143 km, it maximum width is 5 km, and average depth is 5 m (with maximum depth equaling 23 m). The Uglich Reservoir was created for the benefit of transportation, energy, and water supply. It also performs seasonal flow regulation. The towns of Uglich, Kalyazin, and Kimry are located along the reservoir.
The construction of the dam led to a 15th-century monastery in Uglich and 16th-century monastery in Kalyazin being submerged by the artificial lake. The Flooded Belfry is an example of a submerged landmark.