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River

Wkra

249 km from source to mouth · Poland.

PolandPolandFlows into Narew

Follow the riverMonth by month

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

In numbers

Length

249km

Average flow

350m³/s

Basin

5,322km²

Drop

91m

from 158 m to 67 m

Country

1

The journey

From source to mouth

249 km of river and 10 stops on the way: 5 towns and cities on its banks, dams, bridges and the tributaries that feed it.

158 m67 m
Sourceat 158 m0 km
Działdowo21,127 people24 km
Żuromin9,019 people89 km
Mławkatributary127 km
Łydyniatributary191 km
Raciążnicatributary193 km
Narewat 67 m249 km
050100150200249 km
  1. 0 kmSourceat 158 m
  2. 9 kmKozłowo3,000 people
  3. 24 kmDziałdowo21,127 people
  4. 89 kmŻuromin9,019 people
  5. 127 kmMławkatributary
  6. 163 kmGlinojeck3,117 people
  7. 191 kmŁydyniatributary
  8. 193 kmRaciążnicatributary
  9. 200 kmPłonkatributary
  10. 217 kmSonatributary
  11. 248 kmNowy Dwór Mazowiecki27,633 people
  12. 249 kmNarewat 67 m

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

River in Poland

At the mouth it carries 347 m³/s on average: an Olympic pool every 7.2 seconds. It drops from 158 m to 67 m, 0.4 m per kilometre on average. Its basin covers 5,322 km², about the size of TT. 5.5 million people live in it. Highest water: from March to May; lowest: from January to February. No large dam holds it back: it is one of the world's free-flowing rivers.

Read more on Wikipedia

Where to start

Wkra, month by month

Highest water: from March to May

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

310
-5°29 mmJan
210
-4°25 mmFeb
670
2°29 mmMar
650
8°34 mmApr
670
13°53 mmMay
480
16°72 mmJun
540
18°74 mmJul
540
18°64 mmAug
510
13°50 mmSep
480
8°40 mmOct
500
2°44 mmNov
390
-2°39 mmDec
Water (estimated flow)Air (average) Rain (mm)Best months

From about 210 m³/s in the lowest month to 670 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

Wkra: the basin in numbers

74,614 km² of land send their water to this river. This is what lives on it.

Free-flowingDams upstream can hold only 0.9% of a year's flow: the river still keeps its natural rhythm.
  • 5.5millionpeople live in the basin
  • 74/km²people per km²
  • 156maverage altitude of the basin
  • 574mmof rain a year (basin average)
  • 7.1°Caverage air temperature
  • 14%protected areas
  • 1.0%covered by lakes
  • 0.1km³held in reservoirs

What covers the basin

  • 22% Forest
  • 42% Cropland
  • 18% 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

Wkra: what you find on the way

  • 11Weirs
  • 1Locks
  • 2Boat ramps
  • 3MarinasMarina Modlin, Koło Polskiego Związku Wędkarskiego nr 15
  • 10Boat rentalsKajaki i rowery Ważka, Wypożyczalnia kajaków kajaki Wkra, Spływy Wkra „Kajaki Szczypiorno” and 7 more
  • 5River beachesPlaża nad Wkrą, Plaża Kosewko, Zacisze Pomiechówek and 2 more

From OpenStreetMap, within 2.3 km of the river. Not mapped is not the same as not there.

From space

The source and the mouth, seen from orbit

Wkra: satellite view of the source
The source14 km across
Wkra: satellite view of the mouth
The mouth37 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

Wkra in pictures

MOs810, WG 2024 7 Mazowsze W-N (Wkra river in Wkra village) (2)
MOs810 · CC BY 4.0
Footbridge over Wkra in Kosewko - 01
Jolanta Dyr · CC BY-SA 3.0
MOs810, WG 2024 7 Mazowsze W-N (Wkra river in Wkra village) (1)
MOs810 · CC BY 4.0
Rzeka Wkra nieopodal Bolęcina - panoramio
geo573 · CC BY 3.0

Tributaries

Where it flows, and what flows into it

Tributaries (11)

Also: Łydynia, Płonka, Sona, Mławka, Raciążnica, Naruszewka, Nasielna, Rosica, Wisiołka, Luta, Działdówka

Where these numbers come from

Name, length, placesWikidata (Q771440) · 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.

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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
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canyonsCanyonyasEvery canyon cut to scale: depth to the floor, rim and floor temperatures, trails and viewpoints.Coming soonVisit