River
Wkra
249 km from source to mouth · Poland.
PolandFlows into Narew
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.
- 0 kmSourceat 158 m
- 9 kmKozłowo3,000 people
- 24 kmDziałdowo21,127 people
- 89 kmŻuromin9,019 people
- 127 kmMławkatributary
- 163 kmGlinojeck3,117 people
- 191 kmŁydyniatributary
- 193 kmRaciążnicatributary
- 200 kmPłonkatributary
- 217 kmSonatributary
- 248 kmNowy Dwór Mazowiecki27,633 people
- 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.
Where to start
- Nowy Dwór MazowieckiLargest city on its banks · 27,633 people
- Warsaw Modlin Airport (WMI)Nearest airport with scheduled flights, 5 km from the cityCar hire at WMI airport (Nowy Dwór Mazowiecki)Discover Cars · Affiliate link↗
- On the water15 ferry piers, marinas, boat rentals and boat ramps along the river (OpenStreetMap)
- From May to SeptemberThe best months to visit
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.
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
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The basin
Wkra: the basin in numbers
74,614 km² of land send their water to this river. This is what lives on it.
- 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
- 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


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
Tributaries
Where it flows, and what flows into it
It flows into
NarewTributaries (11)
Also: Łydynia, Płonka, Sona, Mławka, Raciążnica, Naruszewka, Nasielna, Rosica, Wisiołka, Luta, Działdówka
Nearby
Rivers nearby
Where these numbers come from
| Name, length, places | Wikidata (Q771440) · 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
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.



