Little soswa
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Little Soswa Малая Сосьва (Malaja Soswa) |
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| Data | ||
| Water code | RU : 15020200112115300028343 | |
| location | Khanty and Mansi Autonomous Okrug / Ugra ( Russia ) | |
| River system | If | |
| Drain over | Northern Soswa → Ob → Arctic Ocean | |
| source |
West Siberian Lowlands 62 ° 11 ′ 9 ″ N , 62 ° 55 ′ 29 ″ E |
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| Source height | approx. 210 m | |
| muzzle |
Northern Soswa near Igrim Coordinates: 63 ° 10 ′ 32 " N , 64 ° 24 ′ 56" E 63 ° 10 ′ 32 " N , 64 ° 24 ′ 56" E |
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| Mouth height | 11 m | |
| Height difference | approx. 199 m | |
| Bottom slope | approx. 0.41 ‰ | |
| length | 484 km | |
| Catchment area | 10,400 km² | |
| Discharge at the Schuchturkurt A Eo gauge : 5930 km² Location: 173 km above the mouth |
MQ 1950/1968 Mq 1950/1968 |
36.7 m³ / s 6.2 l / (s km²) |
| Left tributaries | Punga | |
| Right tributaries | Jomjugan , Sotejugan | |
| Flowing lakes | Man-tur | |
| Communities | Swetly, Igrim | |
| Navigable | 120 km (from Swetly) | |
The Little Soswa ( Russian Малая Сосьва / Malaja Soswa ) is a 484 km long right tributary of the Northern Soswa (Severnaya Soswa) on the western edge of the West Siberian lowlands in Russia . It is not to be confused with the insignificant source rivers of the same name of the Northern Soswa and the Soswa .
course
The Little Soswa rises in about 210 m about 30 km north of the settlement Agirisch in the hill country that extends between the Urals and the mountain range Ljulimwor (Ljulingwor). It flows first in a south-westerly direction to the southern end of the ridge and there turns sharply in a northerly direction. She maintains this right up to the confluence with the Northern Soswa near the settlement of Igrim . While the river valley is partially cut into the surrounding terrain, especially in the middle reaches, the area of the last 70 kilometers (as the crow flies) of the river is very flat and marshy. During the spring floods, it is often flooded many kilometers wide.
Over its entire length, the Small Sosva flowing through the territory of the Autonomous Okrug of Khanty-Mansi / Ugra , first of Rajons Sovetsky , then the Rajons Beryozovo . The most important tributaries are the Jomjugan and Sotejugan from the right and the Punga from the left.
Hydrography
The catchment area of the Little Soswa covers 10,400 km². In the lower reaches the river reaches a width of about 150 m with an average depth of 1.5 m; the flow velocity here is 0.4 m / s.
The river freezes from October to April / May, followed by spring and summer floods that last until September. The water flow of the Kleine Soswa on the middle course, 173 km above the mouth, is an annual average of 36.7 m³ / s with a minimum of 9.8 m³ / s in March and a maximum of 129 m³ / s in May.
Infrastructure and economy
The river is navigable for 120 km from the Swetly settlement.
Except for Swetly and the urban-type Igrim settlement at the estuary, there are no permanently inhabited villages on the river today. A large number of earlier Mansi settlements on the upper and middle reaches, such as Changokurt, Gusinkurt and Schuchturkurk (Schuchtungort), have been abandoned for decades. The area on the lower reaches of the river was developed for natural gas production from the 1960s after the Beryosovskoye deposit group was discovered there. Here, pipelines cross the river in several places , as does the pipeline leading from the production area to the industrial cities of the Middle Urals, the upper reaches. The area on the upper reaches was developed from Agirisch, which had received a railway connection around 1970 , with roadways for forestry use.
Today an area of 225,562 hectares on the middle course of the river has been under nature protection as Sapowednik Malaja Soswa with administration in the town of Sowetski since 1976 .
Individual evidence
- ↑ a b Small Soswa in the State Water Register of the Russian Federation (Russian)
- ↑ a b Article Malaja Soswa in the Great Soviet Encyclopedia (BSE) , 3rd edition 1969–1978 (Russian)
- ↑ a b Kleine Soswa at the Schuchturkurt gauge - hydrographic data at R-ArcticNET (measurement period 19 years)
- ^ 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
- ↑ Sapowednik Malaja Soswa in "Information and information system especially protected natural areas of Russia " of the Center for Nature Conservation (Russian)