The Lokka Reservoir is a reservoir

Reservoir

A reservoir , artificial lake or dam is used to store water.Reservoirs may be created in river valleys by the construction of a dam or may be built by excavation in the ground or by conventional construction techniques such as brickwork or cast concrete.The term reservoir may also be used to...

, upstream of the Luiro

Luiro

Luiro is a river of Finland. It is a tributary of Kitinen, that itself is a tributary of Kemijoki. The river flows trough the municipalities of Sodankylä, Savukoski and Pelkosenniemi in Finnish Lapland. The Lokka Reservoir is located in the middle course of the river.-See also:*List of rivers in...

 River in Sodankylä

Sodankylä

-Twin towns: Kola, Russia, since 1968 Berlevåg, Norway, since 1971 Norsjö, Sweden, since 1977 Heiligenblut, Austria, since 1979-External links:* – Official website* * * * * *...

, in northern Finland

Finland

Finland , officially the Republic of Finland, is a Nordic country situated in the Fennoscandian region of Northern Europe. It is bordered by Sweden in the west, Norway in the north and Russia in the east, while Estonia lies to its south across the Gulf of Finland.Around 5.4 million people reside...

. Depending on the water level, its area ranges from 216 to 418 km². The corresponding water levels above mean sea level are 240–245 meters. The filling of the reservoir Lokka began in 1967, and with this reservoir, the amount of water coming to the power plants in Kemijoki

Kemijoki

Kemijoki , with its length, is the longest river in Finland. It runs through Kemijärvi and Rovaniemi before reaching the Gulf of Bothnia at Kemi.At Rovaniemi the Ounasjoki river merges with Kemijoki....

 could be regulated. Lokka has also been famous for its rich fish population. There are also populations of white-tailed eagle

White-tailed Eagle

The White-tailed Eagle , also known as the Sea Eagle, Erne , or White-tailed Sea-eagle, is a large bird of prey in the family Accipitridae which includes other raptors such as hawks, kites, and harriers...

s at the reservoir. These do not migrate south for the winter, instead staying at Lokka to feed on fish left by local fishermen.

Lokka is connected to the Porttipahta Reservoir

Porttipahta Reservoir

Porttipahta Reservoir is a lake of Finland.-References:* *...

 through the Vuotso Channel.