Lake Kemijärvi

Kuusamo is the largest lake of natural origin in the river system in the municipality of Kuusamo Kemi in Finnish Lapland. The water level of the lake is regulated and varies from 142 to 148.8 m. At the same time the water surface varies 128-285 km ². The 80- km long lake is drained by the Kemi. The town of the same name Kuusamo is located on the lakeshore.

The hydroelectric power plant at Seitakorva outflow of Kuusamo at ( 66 ° 24 ' 19.2 "N, 27 ° 19' 46.6 " O66.40533327.329617 ) has an installed capacity of 128 MW and uses a drop height of 17-24 m from.