The Lokka Reservoir (in Finnish: Lokan tekojärvi, Lokan allas, short form Lokka), is a reservoir, upstream of the Luiro River in Sodankylä, in northern Finland. 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 could be regulated. Lokka has also been famous for its rich fish population. There are also populations of white-tailed eagles at the reservoir. These do not migrate south for the winter, instead they stay at Lokka to feed on fish left by local fishermen.

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Lokka Reservoir
Lokka reservoir seen from embankment dam in Lokka village.
Lokka Reservoir
Location of the lake in Finland
Location	Sodankylä
Coordinates	67°49′12″N 27°45′00″E
Type	reservoir
Primary inflows	Luiro
Primary outflows	Luiro
Basin countries	Finland
Surface area	216–418 km2 (83–161 sq mi)
Surface elevation	240–245 m (787–804 ft)

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Lokka is connected to the Porttipahta Reservoir through the Vuotso Canal.