Nadym (river)
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Nadym Надым |
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 Catchment area of the Nadym |
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| Data | ||
| Water code | RU : 15030000112115300047293 | |
| location | Yamalo-Nenets Autonomous Okrug ( Russia ) | |
| River system | Nadym | |
| source |
Numtosee 63 ° 33 '1 " N , 71 ° 33' 44" O |
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| Source height | 105 m | |
| muzzle |
Obbusen ( Karasee ) coordinates: 66 ° 14 ′ 23 " N , 71 ° 59 ′ 54" E 66 ° 14 ′ 23 " N , 71 ° 59 ′ 54" E |
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| Mouth height | 0 m | |
| Height difference | 105 m | |
| Bottom slope | 0.19 ‰ | |
| length | 545 km | |
| Catchment area | 64,000 km² | |
| Discharge at the Nadym A Eo gauge : 48,000 km² Location: 110 km above the mouth |
MQ 1955/1991 Mq 1955/1991 |
458 m³ / s 9.5 l / (s km²) |
| Left tributaries | Left Chetta , Cheigijacha, Jarudei | |
| Right tributaries | Simijegan, Tanlowa, Right Chetta | |
| Medium-sized cities | Nadym | |
| Navigable | 123 km (from Nadym) | |
The Nadym ( Russian Надым ) is a 545 kilometer long tributary of the Kara Sea in Western Siberia ( Russia , Asia ).
course
The Nadym flows from the Numto Lake , located 105 m on the Siberian ridge (Sibirskije Uwaly) in the northwest of the West Siberian lowlands . The river flows through the lowlands first in a north-easterly, then in a north-westerly direction to its confluence with the Obbuses of the Kara Sea, just a little east of the confluence of the Ob . Above the mouth, the river, together with the Great Jarudei (Bolshoi Jarudei) coming from the east and other tributaries, has formed an approximately 1500 km² delta that is partially subject to tides and winds .
The most important tributaries are Left Chetta (Lewaja Chetta, length 357 km), Cheigijacha (Longjugan) and Jarudei from the left, and Simijegan, Tanlowa and Right Chetta (Prawaja Chetta) from the right.
The origin of the nadym lies directly on the border with the autonomous circle of the Khanty and Mansi ; otherwise it flows through the territory of the Yamal-Nenets Autonomous Okrug along its entire length .
Hydrography
The catchment area of the Nadym covers 64,000 km², of which 5,570 km² are accounted for by over 40,000 lakes, of which only five are larger than 10 km². The river is up to 400 meters wide near the mouth; the flow velocity here is 0.1 m / s.
The mean water flow near the mouth is 590 m³ / s, at the town of Nadym, 110 kilometers above the mouth and above the delta, 458 m³ / s with a minimum of 136 m³ / s in March and a maximum of 1682 m³ / s in June .
The Nadym freezes over between October and the end of May.
Economy and Infrastructure
The Nadym is navigable on the lower 123 kilometers, from the city of Nadym named after it .
The large Medweschje natural gas reservoir is located in the catchment area . The river itself is rich in fish, for example peled vendace .
With the exception of the area around the city of Nadym, the territory through which it flows is very sparsely populated. At the end of the 1940s, construction began on the Arctic Circle Railway , which was supposed to cross the river in the area of the then non-existent town of Nadym. The bridge was never built, but the unfinished section in the 1950s on the section east of the Nadym was prepared for freight traffic by the early 1980s. At the settlement of Stary Nadym ("Old Nadym", today part of the Nadym located a few kilometers from the other side of the bank) it was brought a good six kilometers downstream from the originally planned crossing to the river.
Along the Nadym and its tributary, the Linke Chetta, a road from Belojarski reaches the town of Nadym. In September 2015, the auto part of a 1.3 km long bridge for car and rail traffic was opened over the Nadym.
South of the city Nadym is the flow of a series of pipelines crossed that of the North West Siberian oil and gas fields in the European part of Russia and further to Western Europe (lead including Urengoi - Center I and II , Urengoi- Uzhgorod , Yamburg - Yelets I and II , “Progress” , Jamburg– Tula I and II , Jamburg– Powolschje ).
Individual evidence
- ↑ a b Article Nadym in the Great Soviet Encyclopedia (BSE) , 3rd edition 1969–1978 (Russian)
- ↑ a b Nadym in the State Water Register of the Russian Federation (Russian)
- ↑ a b Nadym at the Nadym gauge - hydrographic data at R-ArcticNET
- ↑ List of Inland Waterways of the Russian Federation (confirmed by Order No. 1800 of the Government of the Russian Federation of December 19, 2002)