River
Uday River
342 km from source to mouth · Ukraine.
UkraineFlows into Sula River
In numbers
Length
342km
Average flow
9.4m³/s
Basin
7,030km²
Drop
46m
from 134 m to 88 m
Country
1
The journey
From source to mouth
342 km of river and 11 stops on the way: 5 towns and cities on its banks, dams, bridges and the tributaries that feed it.
- 0 kmRozhnivkaat 134 m
- 62 kmIchenkatributary
- 89 kmPryluky52,553 people
- 120 kmSmoshtributary
- 144 kmLysohirtributary
- 160 kmVarva7,689 people
- 172 kmLadan6,719 people
- 176 kmZhuravka3,012 people
- 228 kmRudatributary
- 229 kmPerevidtributary
- 243 kmPyryatyn14,988 people
- 328 kmMnohatributary
- 342 kmSula Riverat 88 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 9.4 m³/s on average: an Olympic pool every 266 seconds. It drops from 134 m to 88 m, 0.1 m per kilometre on average. Its basin covers 7,030 km², about the size of PS. 222,000 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.
Where to start
- PrylukyLargest city on its banks · 52,553 people
- Gomel Airport (GME)Nearest airport with scheduled flights, 235 km from the cityCar hire at KBP airport (Boryspil)Discover Cars · Affiliate link↗
- From May to SeptemberThe best months to visit
Uday 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.
From about 4.7 m³/s in the lowest month to 55 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
Uday River: the basin in numbers
6,995 km² of land send their water to this river. This is what lives on it.
- 222,000people live in the basin
- 32/km²people per km²
- 136maverage altitude of the basin
- 597mmof rain a year (basin average)
- 7.6°Caverage air temperature
- 4%protected areas
- 0.3%covered by lakes
What covers the basin
- 6% Forest
- 71% Cropland
- 9% 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
Uday River: what you find on the way
- 3River beaches
From OpenStreetMap, within 1.7 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
Sula RiverTributaries (8)
Also: Ichenka, Mnoha, Perevid, Ruda, Lysohir, Halka, Smosh, Burymnia
Nearby
Rivers nearby
Where these numbers come from
| Name, length, places | Wikidata (Q367366) · CC0 |
|---|---|
| Course, profile, basin | RiverATLAS v1.0 (HydroATLAS, Linke et al. 2019) · CC BY 4.0 — followed along the river network from the point 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
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.