Zelvyanka
Selvyanka, Belarusian Зэльвянка , Polish Zelwianka |
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The Selvyanka near Selwa |
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Data | ||
location | Hrodsenskaja Woblasz , Breszkaja Woblasz ( Belarus ) | |
River system | Memel | |
Drain over | Memel → Baltic Sea | |
muzzle | at Masty in the Memel coordinates: 53 ° 24 ′ 9 ″ N , 24 ° 32 ′ 17 ″ E 53 ° 24 ′ 9 ″ N , 24 ° 32 ′ 17 ″ E
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length | 170 km | |
Catchment area | 1940 km² | |
Left tributaries | Saswa , Mjaschtouka , Kipjatka , Samarauka , Juchnauka | |
Right tributaries | Schtschyba , Ruschanka , Iwanauka , Akouka | |
Reservoirs flowed through | Selwenska reservoir | |
Medium-sized cities | Masty | |
Small towns | Selwa |
The Selvyanka ( Belarusian Зэльвянка , Polish Zelwianka ) is a river in Belarus that flows into the Memel .
The Selvyanka is 170 km long and its catchment area is 1940 km². The annual runoff of water in the area of the mouth is about 11 m³ / s, the average gradient is 0.4 ‰.
geography
course
The river runs through Hrodsenskaja Woblasz and Breszkaja Woblasz and flows into the Memel on the left.
The source of the Selvyanka is located in the southern part of the Vaukawysky Hill ( Belarusian Ваўкавыскае ўзвышша ). It breaks through the upper part of the hill in a northerly direction and supplies the Selwenska reservoir (Transl. Selwenskaje wadaschowishcha - Belarusian Зэльвенскае вадасховішча ) with an area of 11.9 km². It flows into the Memel lowlands (Transl. Njomanskaja nisina - Belarusian Нёманская нізіна ) in the city of Masty in the Memel.
The valley is shaped like a trapezoid, with a width increasing from 0.5 to 3–4 km downstream. There are muddy, often smooth floodplains that are up to 2.5 km wide, in the middle and lower reaches more than 0.4–0.6 km wide. The bed is twisted, its width at low tide is 15-20 m. The river is canalized over a length of 44.2 km.
Tributaries
- Right tributaries are: Shchyba , Ruschanka , Iwanauka and Akouka
- Left tributaries are: Saswa , Mjaschtouka , Kipjatka , Samarauka and Juchnauka
environment
There are some floodplain areas that have been recultivated. The river freezes over from the end of December, the ice layer opens again in mid-March.