Tsankov Kamak technical data Catchment area 1214km2 Annual inflow 650Mm3 Average inflow 69.5m3/sec Useful inflow 580Mm3 Reservoir area 3.27km2 Live storage 41Mm3 Total storage 111Mm3 Max operating level <685m Min operating level 648m Nominal rating 2 x 40MW Power generation 185GWh/a Gross head 136m Type of generator Francis turbine