Great Salym
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Great Salym Большо́й Салы́м, Большой Салым (Bolshoi Salym) |
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| Data | ||
| Water code | RU : 13011100212115200049660 | |
| location | Khanty-Mansi Autonomous Okrug ( Russia ) | |
| River system | If | |
| Drain over | Whether → Arctic Ocean | |
| source |
West Siberian Lowlands 59 ° 28 ′ 6 ″ N , 72 ° 44 ′ 2 ″ E |
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| Source height | approx. 95 m | |
| muzzle | in the southern main arm of the Ob west of Poikowski coordinates: 61 ° 9 '2 " N , 70 ° 43' 28" E 61 ° 9 '2 " N , 70 ° 43' 28" E |
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| Mouth height | 23 m | |
| Height difference | approx. 72 m | |
| Bottom slope | approx. 0.12 ‰ | |
| length | 583 km | |
| Catchment area | 18,100 km² | |
| Discharge at the Lempino A Eo gauge : 12,500 km² Location: 65 km above the mouth |
MQ 1964/1977 Mq 1964/1977 |
69 m³ / s 5.5 l / (s km²) |
| Left tributaries | Wandras , Little Salym | |
| Right tributaries | Bolshaya Yuganskaya | |
| Small towns | Salym | |
| Communities | Lempino | |
| Navigable | 110 km | |
The Great Salym ( Russian Большо́й Салы́м / Bolshoi Salym ) is a 583 km long left tributary of the Ob in the West Siberian lowlands in Russia .
course
The Great Salym flows at a height of about 95 m from a swamp area in this area called the "Salym Swamp" ( Salymskoje boloto ) in the central part of the West Siberian lowlands. It flows along its entire length, always on the territory of the Rajons Nefteyugansk of the Autonomous Okrug of Khanty-Mansi , the many lakes marsh and taiga in the north to northwest. He meanders strongly.
The river meets almost 60 km west of the Poikowski settlement , about 9 km before its confluence with the southern main arm of the Ob, on the extreme left Ob tributary, Bolshaya Yuganskaya . Before that it divides into three arms, next to the main arm the Bolshoi Chuswas to the right and the Stariza to the left.
The Wandras is one of the few larger tributaries of the Great Salym and the most important is the Small Salym (Maly Salym), which flows into the lower reaches , both from the left. During the spring floods, an area several dozen square kilometers at the confluence of the Little Salym and in the area of the estuary of the Great Salym becomes a lake.
Hydrography
The catchment area of the Great Salym covers 18,100 km². In the lower reaches the river reaches a width of up to 200 m at a depth of over 2 m; the flow velocity is 0.4 m / s.
The water flow of the Great Salym reaches an annual average of 120 m³ / s at the mouth, at Lempino 65 km above the mouth and above the confluence of the Small Salym still 69.4 m³ / s with a minimum of 13.0 m³ / s in March and a maximum of 225 m³ / s in May.
Infrastructure and economy
The river is navigable for 210 km, but today only 100 km from the mouth are considered an inland waterway.
The area through which it flows is only sparsely populated. The only localities are the urban-type Salym settlement , a few kilometers from the river on the Wandras tributary on the middle course, and Lempino on the lower course. Both belong to Nefteyugansk Raion. At Salym, the railway line and the regional road R404 cross the river, which connects Tyumen with Surgut , Nizhnevartovsk and Novy Urengoy , as well as several pipelines . A branch of the R404 to the capital of the Khanty-Mansiysk Autonomous Okrug crosses the lower reaches of the Great Salym above Lempino.
There are significant oil deposits in the middle and lower reaches of the Great Salym .
Individual evidence
- ↑ a b Great Salym in the State Water Register of the Russian Federation (Russian)
- ↑ a b Großer Salym at the Lempino gauge - hydrographic data from R-ArcticNET (observation period only 14 years)
- ↑ a b c Großer Salym on the website of the Geographical Institute of the RAN (Russian)
- ^ List of Inland Waterways of the Russian Federation (confirmed by Order No. 1800 of the Government of the Russian Federation of December 19, 2002); on-line