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River

Ondava

146 km from source to mouth · Slovakia.

SlovakiaSlovakiaFlows into Bodrog5th longest in Slovakia

Follow the riverMonth by month

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

In numbers

Length

146km

Average flow

21m³/s

Basin

3,400km²

Drop

167m

from 262 m to 95 m

Country

1

The journey

From source to mouth

146 km of river and 17 stops on the way: 15 towns and cities on its banks, dams, bridges and the tributaries that feed it.

262 m95 m
Sourceat 262 m0 km
Svidník9,500 people25 km
Stropkov9,660 people42 km
Breznica852 people45 km
Nižný Hrabovec1,547 people91 km
Dlhé Klčovo1,342 people95 km
Topľatributary117 km
Trnávkatributary132 km
Bodrogat 95 m146 km
050100146 km
  1. 0 kmSourceat 262 m
  2. 0 kmZborov3,599 people
  3. 8 kmBardejov30,267 people
  4. 21 kmVyšná Jedľová184 people
  5. 25 kmSvidník9,500 people
  6. 27 kmMestisko435 people
  7. 27 kmKurima1,129 people
  8. 42 kmStropkov9,660 people
  9. 45 kmBreznica852 people
  10. 46 kmGiraltovce3,994 people
  11. 57 kmHanušovce nad Topľou3,782 people
  12. 85 kmVranov nad Topľou20,595 people
  13. 91 kmNižný Hrabovec1,547 people
  14. 95 kmDlhé Klčovo1,342 people
  15. 104 kmRakovec nad Ondavou997 people
  16. 112 kmTrhovište2,133 people
  17. 117 kmTopľatributary
  18. 132 kmTrnávkatributary
  19. 146 kmBodrogat 95 m

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

River in Slovakia

At the mouth it carries 21 m³/s on average: an Olympic pool every 119 seconds. It drops from 262 m to 95 m, 1.1 m per kilometre on average. Its basin covers 3,400 km², about the size of CV. 286,000 people live in it. Highest water: March; lowest: from December to February and October. Dams and reservoirs hold back a large share of its water (26% of a year's flow).

Read more on Wikipedia

Where to start

Ondava, month by month

Highest water: March

Lowest water: from December to February and October. Best months to visit: from May to September.

12
-3°39 mmJan
11
-1°36 mmFeb
53
4°35 mmMar
38
10°43 mmApr
30
14°65 mmMay
29
18°88 mmJun
30
20°85 mmJul
29
19°74 mmAug
24
15°50 mmSep
23
10°43 mmOct
26
4°50 mmNov
17
0°50 mmDec
Water (estimated flow)Air (average) Rain (mm)Best months

From about 11 m³/s in the lowest month to 53 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

Ondava: the basin in numbers

3,523 km² of land send their water to this river. This is what lives on it.

Heavily regulatedReservoirs can hold 26% of a year's flow: dams shape its seasons.
  • 286,000people live in the basin
  • 81/km²people per km²
  • 330maverage altitude of the basin
  • 717mmof rain a year (basin average)
  • 7.7°Caverage air temperature
  • 3%protected areas
  • 0.3%covered by lakes
  • 0.2km³held in reservoirs

What covers the basin

  • 56% Forest
  • 26% Cropland
  • 27% Pasture
  • 3% 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

Ondava: what you find on the way

  • 3Dams
  • 3Weirs

From OpenStreetMap, within 1.5 km of the river. Not mapped is not the same as not there.

Cross-checked with our atlases

Ondava in our other atlases

What our sister atlases know about the waterfalls on this river, the lakes it flows through, the beaches at its mouth, the mountains where it rises and the islands off its mouth.

  • 29mountains at the sourcePeakyas

Mountains at the source (29)

Within 15 km of the source, by Peakyas

  1. Busov14 km away1,002m
  2. Stebnícka Magura11 km away900m
  3. Javorina5.8 km away881m
  4. Kozie Żebro10 km away847m
  5. Smilniansky vrch3.0 km away749m
  6. Wysota9.8 km away784m
  7. Obicz - Beskid Niski 788 mnpm7.3 km away780m
  8. Czeremcha9.3 km away670m

21 more on PeakyasOpen Peakyas ↗

From space

The source and the mouth, seen from orbit

Ondava: satellite view of the source
The source14 km across
Ondava: satellite view of the mouth
The mouth10 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

Ondava in pictures

Ondava 19.08.08 p
Przykuta ( talk ) · CC BY-SA 4.0
Svidnik Ondava
Peter Zelizňák · Public domain
Ondava spring 1
User:PM / pl:Wikipedysta:P · Public domain
Ondava Nizna Polianka
User:PM / pl:Wikipedysta:P · Public domain

Tributaries

Where it flows, and what flows into it

Tributaries (11)

Also: Topľa, Ladomirka, Trnávka, Chotčianka, Ondavka, Jedľovský potok, Mirošovec, Mostovka, Olšavka, Vojtovec, Brusnička

Where these numbers come from

Name, length, placesWikidata (Q644669) · 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
Our other atlasesPeakyas — Wikidata · CC0; © OpenStreetMap contributors · ODbL; GeoNames · CC BY 4.0; HydroLAKES · CC BY 4.0; NOAA OISST

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