Slovakia, Hodrusa-Hamre, upper hodrusa reservoir. The upper hodrusa reservoir was from the year 1960 drained and abandoned. First after more than 40 year was drawed on year 2002. Parameters of reservoir: earthy dam 225 m long, 7 m width on top, height 15 m, maximal volume of water was 255 800 cubic metres, actually about 80 000 til 100 000 cubic metres.