Bulun (cork codon)

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Bulun
Булун
Rassocha ( Рассоха )
Dolomnan ( Доломнан )
Data
Water code RU :  19010100312119000027592
location Magadan Oblast ( Russia )
River system Kolyma
Drain over Corkodon  → Kolyma  → East Siberian Sea
source Konginskigebirge / Kolymagebirge
64 ° 43 ′ 30 ″  N , 157 ° 43 ′ 59 ″  E
Source height 447  m
muzzle in the Korkodon coordinates: 65 ° 3 '49 "  N , 154 ° 51' 55"  E 65 ° 3 '49 "  N , 154 ° 51' 55"  E
Mouth height 125  m
Height difference 322 m
Bottom slope 0.75 ‰
length 428 km
Catchment area 17,000 km²
Left tributaries Nelgju
Right tributaries Wisualnaja , Nenkal , Aly-Jurjach

The Bulun ( Russian Булун ) is a 428 km long right tributary of the Korkodon in northeast Siberia , in the Asian part of Russia . Alternatively, it is also known as Rassocha (Russian Рассоха ), in the upper reaches as Dolomnan (Russian Доломнан ).

The Bulun flows from a small lake in the wide valley west of the Konginski Mountains, which stretches to the northeast as a foothill of the Kolyma Mountains with the character of a low mountain range. It flows - in its entire course in the territory of the Magadan Oblast - first in a northerly direction, turns gradually to the northwest and finally, strongly meandering on the southern edge of the Jukagiren plateau in a southwestern direction. As the most important tributary, it reaches the right Kolyma tributary, the Korkodon, 91 kilometers above its mouth, a good 100 km from the no longer permanently inhabited settlement of Orojok and the border with the Sakha Republic (Yakutia) , and about 200 km southwest of the nearest larger town Syrjanka . At the mouth, the bulun, which is about 100 meters wide there, is larger than the corkodon.

Its catchment area covers 17,000 km². The largest tributaries are Wisualnaja (Russian Визуальная , length 156 km), Nenkal ( Ненкал , 132 km, Aul-Nakchat in the upper and middle reaches ) and Aly-Jurjach ( Алы-Юрях , 254 km) from the right and the Nelgju ( Нельгю , 73 km) from the left.

Today there are no towns in the entire catchment area of ​​the river. The lower and middle reaches of the confluence of the Wisualnaja were followed by a total of over 300 km of winter piste, which, coming from the Kolyma, continues to the gold prospecting settlement of Rassocha on the upper reaches of the Wisualnaja, which was abandoned around the second half of the 1970s, and Omolon led to the river of the same name .

Individual evidence

  1. ↑ Soviet General Staff Map 1: 200,000. Sheet Q-57-XXV, XXVI (edition 1984)
  2. ↑ Soviet General Staff Map 1: 200,000. Sheet Q-56-XXIX, XXX (1984 edition)
  3. ↑ a b c Bulun in the State Water Register of the Russian Federation (Russian)