Lake Baikal, Irkutsk Oblast, Russia

Lake Baikal, Irkutsk Oblast, Russia:
"Baykal" and "Baikal" redirect here. For other uses, see Baykal (disambiguation). Lake Baikal Coordinates 53°30′N 108°0′ECoordinates: 53°30′N 108°0′E Lake type Continental rift lake Primary inflows Selenge, Barguzin, Upper Angara Primary outflows Angara Catchment area 560,000 km2 (216,000 sq mi) Basin countries Russia and Mongolia Max. length 636 km (395 mi) Max. width 79 km (49 mi) Surface area 31,722 km2 (12,248 sq mi) Average depth 744.4 m (2,442 ft) Max. depth 1,642 m (5,387 ft) Water volume 23,615.39 km3 (5,700 cu mi) Residence time 330 years Shore length1 2,100 km (1,300 mi) Surface elevation 455.5 m (1,494 ft) Frozen January–May Islands 27 (Olkhon) Settlements Irkutsk 1 Shore length is not a well-defined measure. Lake Baikal (Russian:, tr. Ozero Baykal; IPA: [ˈozʲɪrə bɐjˈkal]; Buryat: , Mongolian:  Baygal nuur, meaning "nature lake";) is a rift lake in the south of the Russian region of Siberia, between the Irkutsk Oblast to the northwest and the Buryat Republic to the southeast. Lake Baikal is the most voluminous freshwater lake in the world, containing roughly 20% of the world's unfrozen surface fresh water, and at 1,642 m (5,387 ft), the deepest. It is also among the clearest of all lakes, and thought to be the world's oldest lake at 25 million years
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