The Skalka dam is on upper Ohře river in region Karlovy Vary.
The beginning construction dam was in 1st July 1957 and end of the building was in December 1964.
Components of dam are earth dam with length 115 m, width 4 m, and rockfill dam (volume is 30 000 m3) with width 50 meters.
The original water works equipped with one spillway for maximum capacity of 390 m 3 /s with segment. Segment height is 7 meters and width is 9,5 m. During the reconstruction in 1998-1999, workers built a second crown of the spillway capacity of 169 m 3 / s with a width of 7 m.
Another functional objects are two bottom outlets with a diameter of 1200 mm with a total capacity of 24,8 m 3 / s.
Small water power plant with installed capacity of 700 kW added to dam during the reconstruction. Two horizontal Kaplan turbines (Pavelka 4KPK-850) work in engine room. Diameter of turbine is 850 mm and absorption capacity of the turbine is 4,5 m3.
Area of water reservoir is 378 ha and capacity is 19,56 million m3. Maximum depth is 14 meters and average depth is 13,8 m. Water reservoir use for recreational, but due to high water pollution cyanobacteria and bygone era even Mercury. They sometimes clean reservoir.
The last partial release reservoir was in 2011. (You can see on the photos).