Kiantajärvi is a rather large lake in Finland, in the Oulujoki main catchment area. It is located in Suomussalmi municipality, in the region of Kainuu. It is the 24th biggest lake in Finland.^[1] The lake is narrow and 50 km long in north–south direction.

Quick Facts Location, Coordinates ...

Kiantajärvi
Kiantajärvi
Location	Suomussalmi, Kainuu
Coordinates	65°02′N 29°06′E
Primary inflows	river Hossanjoki, river Pesiönjoki from the lake Pesiöjärvi
Primary outflows	Emäjoki river, Aittokoski power station
Catchment area	Oulujoki
Basin countries	Finland Kainuu
Max. length	50 km (31 mi)
Surface area	187.933 km2 (72.561 sq mi)
Average depth	7.37 m (24.2 ft)
Max. depth	43 m (141 ft)
Water volume	1.385 km3 (1,123,000 acre⋅ft)
Shore length1	527.719 km (327.909 mi)
Surface elevation	199.3 m (654 ft)
Frozen	November–May
Islands	144 islands, biggest Salonsaari (2.71 km2)
Settlements	Suomussalmi
References	[1]
1 Shore length is not a well-defined measure.

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Kiantajärvi lake played a significant role in the Battle of Suomussalmi during the Winter War in December 1939.

Kiantajärvi is also known for the author Ilmari Kianto, who had his home named Turjanlinna on the shore of Niskaselkä open area. The author's grave is situated in Niettussaari island near his home.