Vacha Reservoir is a body of water associated with a dam in Devin Municipality, south Bulgaria. It is part of the Vacha Cascade Joint Implementation Project involving three more dams and four power stations. The three other existing dams on the Vacha River are the Krichim Dam, the Tsankov Kamak Dam and the Teshel Dam.
Completed on 5 November 1975, the Vacha Dam is situated 680 metres (2,230 ft) above sea level. The dam was designed by Bulgarian hydroengineers, though their work was overseen by Russian, Japanese and Italian experts. It is a concrete gravity structure of 144.5 metres (474 ft) height, making it the tallest dam in Bulgaria together with Krichim Dam. Its pumped storage power plant has a capacity of 160 MW.
