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River

Oster River

199 km from source to mouth · Ukraine.

UkraineUkraineFlows into Desna

Follow the riverMonth by month

SourceMouth
The river and every tributary in its basin, drawn from RiverATLAS (CC BY 4.0).

In numbers

Length

199km

Average flow

3.2m³/s

Basin

2,950km²

Drop

32m

from 130 m to 98 m

Country

1

The journey

From source to mouth

199 km of river and 5 stops on the way: 5 towns and cities on its banks, dams, bridges and the tributaries that feed it.

148 m98 m
Chernihiv Oblastat 130 m0 km
Ivanhorod1,137 people22 km
Lypiv Rih972 people67 km
Nizhyn66,981 people75 km
Kozelets7,968 people171 km
Desnaat 98 m199 km
050100150199 km
  1. 0 kmChernihiv Oblastat 130 m
  2. 22 kmIvanhorod1,137 people
  3. 67 kmLypiv Rih972 people
  4. 75 kmNizhyn66,981 people
  5. 171 kmKozelets7,968 people
  6. 191 kmOster5,564 people
  7. 199 kmDesnaat 98 m

Water level along the river (RiverATLAS; the height is exaggerated). Towns: GeoNames and Wikidata; bridges, dams and tributaries: Wikidata.

River in Ukraine

At the mouth it carries 3.2 m³/s on average: an Olympic pool every 781 seconds. It drops from 130 m to 98 m, 0.2 m per kilometre on average. Its basin covers 2,950 km², about the size of LU. 3.5 million people live in it. Highest water: from April to May; lowest: from December to March. No large dam holds it back: it is one of the world's free-flowing rivers.

Read more on Wikipedia

Where to start

Oster River, month by month

Highest water: from April to May

Lowest water: from December to March. Freezing months (average below −4 °C): from January to February. Best months to visit: from May to September.

330
-6°41 mmJan
240
-5°35 mmFeb
410
0°34 mmMar
830
9°45 mmApr
800
15°46 mmMay
730
18°75 mmJun
530
20°81 mmJul
540
19°62 mmAug
500
14°46 mmSep
450
8°36 mmOct
500
2°47 mmNov
400
-3°47 mmDec
Water (estimated flow)Air (average) Rain (mm)Best months

From about 240 m³/s in the lowest month to 830 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

Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.

The basin

Oster River: the basin in numbers

87,659 km² of land send their water to this river. This is what lives on it.

Free-flowingDams upstream can hold only 0.0% of a year's flow: the river still keeps its natural rhythm.
  • 3.5millionpeople live in the basin
  • 40/km²people per km²
  • 176maverage altitude of the basin
  • 600mmof rain a year (basin average)
  • 6.1°Caverage air temperature
  • 4%protected areas
  • 0.3%covered by lakes

What covers the basin

  • 22% Forest
  • 48% Cropland
  • 15% Pasture
  • 2% 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

Oster River: what you find on the way

  • 1Dams
  • 2Weirs
  • 1Marinas
  • 1River beaches

From OpenStreetMap, within 2.4 km of the river. Not mapped is not the same as not there.

From space

The source and the mouth, seen from orbit

Oster River: satellite view of the source
The source14 km across
Oster River: satellite view of the mouth
The mouth40 km across

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.

Photos

Oster River in pictures

Gulf on the river Oster
Vi Ko · CC BY-SA 4.0
Oster 2
Barow · CC BY-SA 4.0
Oster
Barow · CC BY-SA 4.0
Oster temple 2
V1snyk · CC BY-SA 4.0

Where these numbers come from

Name, length, placesWikidata (Q1753659) · CC0
Course, profile, basinRiverATLAS v1.0 (HydroATLAS, Linke et al. 2019) · CC BY 4.0 — followed from the source to the mouth given by Wikidata
FlowWaterGAP (RiverATLAS), 1971–2000 · CC BY 4.0
Climate along the riverWorldClim (RiverATLAS), 1970–2000 · CC BY 4.0
Towns, bridges, damsWikidata · CC0; GeoNames · CC BY 4.0
Along the river© OpenStreetMap contributors · ODbL
ImagesEOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons

Every source and licence is on the data sources page.

The family

Do you prefer beaches, lakes, mountains, waterfalls, islands, rivers or canyons?

Same idea, other landscapes: field atlases built on open data, month by month, in seven languages.

beachesCoastyaFind your beach: sea temperature, sun and swimming month by month.Visit
lakesLakeyasEvery lake on Earth: water temperature, ice, depth and the shore.Coming soonVisit
mountainsPeakyasEvery summit in 3D: summit weather, the 0 °C line, huts and trails.Visit
waterfallsCascadyasEvery waterfall: height, flow month by month and when it roars.Coming soonVisit
islandsIslandyasEvery island from the sea up: size, sea temperature, ferries and 3D.Coming soonVisit
riversRiveryasEvery river from source to sea: the journey, the flow and the basin in numbers.You are here
canyonsCanyonyasEvery canyon cut to scale: depth to the floor, rim and floor temperatures, trails and viewpoints.Coming soonVisit