Kolyma (river)

The Kolyma (, ; ) is a river in northeastern Siberia, whose basin covers parts of the Sakha Republic, Chukotka Autonomous Okrug, and Magadan Oblast of Russia.

The Kolyma is frozen to depths of several metres for about 250 days each year, becoming free of ice only in early June, until October.

Course

The Kolyma begins at the confluence of the Kulu and the Ayan-Yuryakh (the Kolyma a natural continuation of Ayan-Yuryakh). The confluence happens in the Okhotsk-Kolyma Upland (Охотско-Колымское нагорье), which lies within the watershed that separates the Kolyma basin and the basins of rivers flowing into the Sea of Okhotsk. Kolyma flows across the Upper Kolyma Highlands roughly southwards in its upper course. Leaving the mountainous areas it flows roughly northwards across the Kolyma Lowland, a vast plain dotted with thousands of lakes, part of the greater East Siberian Lowland.

The river empties into the Kolyma Gulf of the East Siberian Sea, a division of the Arctic Ocean.

The Kolyma is long. The area of its basin is . The average discharge at Kolymskoye is , with a high of reported in June 1985, and a low of in April 1979.

In 1892–94 Baron Eduard Von Toll carried out geological surveys in the basin of the Kolyma (among other Far-eastern Siberian rivers) on behalf of the Russian Academy of Sciences (Barr, 1980). During one year and two days the expedition covered , of which were up rivers, carrying out geodesic surveys en route.

The Kolyma is known for its Gulag labour camps and gold mining, both of which have been extensively documented since Joseph Stalin–era Soviet archives opened. The river gives its title to a famous anthology about life in Gulag camps by Varlam Shalamov, The Kolyma Tales.

After the camps were closed, state subsidies, local industries and communication dwindled to almost nothing. Many people have migrated, but those who remain in the area make a living by fishing and hunting. In small fishing settlements, fish are sometimes stored in caves carved from permafrost. The last Americans to visit the Kolyma during the Soviet era, before perestroika, were the crew of the sailing schooner Nanuk in August 1929, whose visit was captured in a film taken by the Nanuk owner's 18-year-old daughter, Marion Swenson. The first two Americans to visit the Kolyma after the Nanuks visit were writer Wallace Kaufman and journalist Rebecca Clay, who traveled by cutter from Ziryanka to Green Cape in August 1991. Kaufman and his daughter Sylvan and CPA Letty Collins Magdanz also travelled part of the Kolyma in August 1992, the first American visitors since the collapse of the Soviet Union. Both trips were arranged by North-East Scientific and Industrial Center: Ecocenter to try out an ecotourism route which was found to be impractical. In February 2012, the Proceedings of the National Academy of Sciences reported that scientists had grown plants from 30,000-year-old Silene stenophylla fruit, which was stored in squirrel burrows near the banks of the Kolyma river and preserved in permafrost. The dam provides most of the electricity to the region including Magadan. the Kolyma dam is an earthen dam some 150 ft high. Air circulation tubes carry frigid winter air into the core of the dam where frozen earth stabilizes the structure. Kolyma Ges. said it was the largest dam ever built in a permafrost region. In 1992 a new hydropower plant was under construction at Ust-Srednekan, the Ust-Srednekan Hydroelectric Plant. Larch forests cleared for the reservoir were cut in winter when the trunks were frozen and easily snapped. The wood was sold for pulp.

There are only a few bridges over the river, including at Ust-Srednekan, at Sinegorye and at Debin (which carries the Kolyma Highway).

References

External links

Information and a map of the Kolyma's watershed
Picture of Mikhalkino Island

Kolyma (river)

Course

See also

References

Further reading

External links