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Kolyma (river)
The Kolyma (Russian: Колыма, IPA: [kəlɨˈma]; Yakut: Халыма, romanized: Xalıma) 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.
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 2,129 kilometres (1,323 mi) long. The area of its basin is 647,000 square kilometres (250,000 sq mi). The average discharge at Kolymskoye is 3,254 m3/s (114,900 cu ft/s), with a high of 26,201 m3/s (925,300 cu ft/s) reported in June 1985, and a low of 30.6 m3/s (1,080 cu ft/s) in April 1979.
The main tributaries of the Kolyma are, from source to mouth:
In the last 75-kilometre (47 mi) stretch, the Kolyma divides into two large branches. There are many islands at the mouth of the Kolyma before it meets the East Siberian sea. The main ones are:
In 1640 Dimitry Zyryan (also called Yarilo or Yerilo) went overland to the Indigirka. In 1641 he sailed down the Indigirka, went east and up the Alazeya. Here they heard of the Kolyma and met Chukchis for the first time. In 1643 he returned to the Indigirka, sent his yasak (tribute) to Yakutsk and went back to the Alazeya. In 1645 he returned to the Lena where he met a party and learned that he had been appointed prikazchik (land administrator) of the Kolyma. He returned east and died in early 1646. In the winter of 1641–42 Mikhail Stadukhin, accompanied by Semyon Dezhnyov, went overland to the upper Indigirka. He spent the next winter there, built boats and sailed down the Indigirka and east to the Alazeya where he met Zyryan. Zyryan and Dezhnyov stayed at the Alazeya, while Stadukhin went east, reaching the Kolyma in the summer of 1644. They built a zimovye (winter cabin), probably at Srednekolymsk, and returned to Yakutsk in late 1645.
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 25,000 kilometres (16,000 mi), of which 4,200 kilometres (2,600 mi) were up rivers, carrying out geodesic surveys en route.
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Kolyma (river)
The Kolyma (Russian: Колыма, IPA: [kəlɨˈma]; Yakut: Халыма, romanized: Xalıma) 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.
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 2,129 kilometres (1,323 mi) long. The area of its basin is 647,000 square kilometres (250,000 sq mi). The average discharge at Kolymskoye is 3,254 m3/s (114,900 cu ft/s), with a high of 26,201 m3/s (925,300 cu ft/s) reported in June 1985, and a low of 30.6 m3/s (1,080 cu ft/s) in April 1979.
The main tributaries of the Kolyma are, from source to mouth:
In the last 75-kilometre (47 mi) stretch, the Kolyma divides into two large branches. There are many islands at the mouth of the Kolyma before it meets the East Siberian sea. The main ones are:
In 1640 Dimitry Zyryan (also called Yarilo or Yerilo) went overland to the Indigirka. In 1641 he sailed down the Indigirka, went east and up the Alazeya. Here they heard of the Kolyma and met Chukchis for the first time. In 1643 he returned to the Indigirka, sent his yasak (tribute) to Yakutsk and went back to the Alazeya. In 1645 he returned to the Lena where he met a party and learned that he had been appointed prikazchik (land administrator) of the Kolyma. He returned east and died in early 1646. In the winter of 1641–42 Mikhail Stadukhin, accompanied by Semyon Dezhnyov, went overland to the upper Indigirka. He spent the next winter there, built boats and sailed down the Indigirka and east to the Alazeya where he met Zyryan. Zyryan and Dezhnyov stayed at the Alazeya, while Stadukhin went east, reaching the Kolyma in the summer of 1644. They built a zimovye (winter cabin), probably at Srednekolymsk, and returned to Yakutsk in late 1645.
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 25,000 kilometres (16,000 mi), of which 4,200 kilometres (2,600 mi) were up rivers, carrying out geodesic surveys en route.