Imatrankoski (Imatrankoski) - dam in Finland, on the River Vuoksi, 7 km from its exit from Lake Saimaa. Located in the city of Imatra area Imatrankoski. The drop height of water 18 meters (over 983 m). Water consumption approx. 600m ³ / s. After the construction of hydroelectric power stations in the 1920s. the earlier waterfall was blocked.
Currently, the water starts on artificial vodoskate made in the summer, it is one of the main attractions for tourists not only Imatra, and Southeast Finland in general. Water is discharged through the dam to the music of Sibelius. It occurs from mid-June to mid-August daily schedule, December 25 (Christmas Day) and December 31st (New Year) at midnight. In the rest of the year the water starts being manufactured.