River
Ostyor
274 km from source to mouth · Belarus and Russia.
Belarus and RussiaFlows into Sozh
In numbers
Length
274km
Average flow
21m³/s
Basin
3,490km²
Drop
56m
from 194 m to 138 m
Countries
2
The journey
From source to mouth
274 km of river and 3 stops on the way: 1 towns and cities on its banks, dams, bridges and the tributaries that feed it.
- 0 kmSourceat 194 m
- 72 kmRoslavl’56,971 people
- 107 kmStomettributary
- 232 kmSosnovkatributary
- 274 kmSozhat 138 m
Water level along the river (RiverATLAS; the height is exaggerated). Towns: GeoNames and Wikidata; bridges, dams and tributaries: Wikidata.
River in Russia and Belarus
At the mouth it carries 21 m³/s on average: an Olympic pool every 120 seconds. It drops from 194 m to 138 m, 0.2 m per kilometre on average. Its basin covers 3,490 km², about the size of CV. 136,000 people live in it. Highest water, with the snowmelt: from April to June; lowest: from December to March. No large dam holds it back: it is one of the world's free-flowing rivers.
Where to start
- Roslavl’Largest city on its banks · 56,971 people
- Mogilev Airport (MVQ)Nearest airport with scheduled flights, 181 km from the city
- From May to AugustThe best months to visit
Ostyor, month by month
Highest water: from April to June
Lowest water: from December to March. Freezing months (average below −4 °C): from December to February. Melting snow makes up much of its water. Best months to visit: from May to August.
From about 19 m³/s in the lowest month to 260 m³/s in the highest. An estimate: the monthly flow is modelled from the lowest and highest months of WaterGAP (RiverATLAS, 1971–2000) and the rain and snow along the river (WorldClim). Dams change the real rhythm. The chip is the average air temperature; below it, the month's rain.
Plan the trip
Plan the trip: boat trips, a bed by the river, a car
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The basin
Ostyor: the basin in numbers
9,897 km² of land send their water to this river. This is what lives on it.
- 136,000people live in the basin
- 14/km²people per km²
- 197maverage altitude of the basin
- 627mmof rain a year (basin average)
- 5.3°Caverage air temperature
- 1%protected areas
What covers the basin
- 18% Forest
- 51% Cropland
- 21% Pasture
- 1% Towns and cities
RiverATLAS (HydroATLAS v1.0, CC BY 4.0): land cover, people, protected areas, glaciers and dams over the whole basin upstream of the mouth.
Along the river
Ostyor: what you find on the way
- 1River beaches
From OpenStreetMap, within 1.8 km of the river. Not mapped is not the same as not there.
From space
The source and the mouth, seen from orbit
Sentinel-2 cloudless 2016 by EOX IT Services GmbH (contains modified Copernicus Sentinel data 2016), CC BY 4.0. The glowing line is the river as drawn by RiverATLAS.
Tributaries
Where it flows, and what flows into it
It flows into
SozhBelarus648 km210 m³/sTributaries (7)
Also: Sosnovka, Stomet, Nemka, Selyanka, Ostrik, Kolpenitsa, Rydyga
Nearby
Rivers nearby
Belarus613 km140 m³/s169 km awayDrut RiverBelarus295 km30 m³/s140 km awayBesedBelarus261 km28 m³/s134 km awayIputBelarus437 km83 m³/s156 km awaySvislach RiverBelarus327 km24 m³/s186 km awaySudost
Ukraine208 km19 m³/s197 km awaySeymUkraine696 km100 m³/s263 km awaySnovUkraine253 km24 m³/s250 km awayWhere these numbers come from
| Name, length, places | Wikidata (Q1344826) · CC0 |
|---|---|
| Course, profile, basin | RiverATLAS v1.0 (HydroATLAS, Linke et al. 2019) · CC BY 4.0 — followed from the source to the mouth given by Wikidata |
| Flow | WaterGAP (RiverATLAS), 1971–2000 · CC BY 4.0 |
| Climate along the river | WorldClim (RiverATLAS), 1970–2000 · CC BY 4.0 |
| Towns, bridges, dams | Wikidata · CC0; GeoNames · CC BY 4.0 |
| Along the river | © OpenStreetMap contributors · ODbL |
| Images | EOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons |
Every source and licence is on the data sources page.
The family
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