Water work was built in 1986 - 1992, the area of water surface is 312 ha and the volume 22,2 mil. cubic m water.
The body of the dam is concrete, of gravitation type 191 m long, on it the communication of IIIrd class passes. At the same time was built the water work Kořensko - the so called plunged step, which should balance the water level of the Vltava to an optimum level.