River
Biebrza
155 km from source to mouth · Poland.
PolandFlows into Narew
In numbers
Length
155km
Average flow
76m³/s
Basin
7,057km²
Drop
32m
from 126 m to 94 m
Country
1
The journey
From source to mouth
155 km of river and 6 stops on the way: 3 towns and cities on its banks, dams, bridges and the tributaries that feed it.
- 0 kmSourceat 126 m
- 24 kmLipsk2,463 people
- 72 kmNettatributary
- 75 kmBrzozówkatributary
- 97 kmGoniądz1,954 people
- 117 kmEłktributary
- 153 kmWizna1,300 people
- 155 kmNarewat 94 m
Water level along the river (RiverATLAS; the height is exaggerated). Towns: GeoNames and Wikidata; bridges, dams and tributaries: Wikidata.
River in Poland, tributary of the Narew
At the mouth it carries 76 m³/s on average: an Olympic pool every 33 seconds. It drops from 126 m to 94 m, 0.2 m per kilometre on average. Its basin covers 7,057 km², about the size of PS. 902,000 people live in it. Highest water: from April 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
- LipskLargest city on its banks · 2,463 people
- Kaunas International Airport (KUN)Nearest airport with scheduled flights, 144 km from the cityCar hire at KUN airport (Kaunas)Discover Cars · Affiliate link↗
- On the water7 ferry piers, marinas, boat rentals and boat ramps along the river (OpenStreetMap)
- From May to SeptemberThe best months to visit
Biebrza, month by month
Highest water: from April 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 47 m³/s in the lowest month to 140 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
Biebrza: the basin in numbers
14,353 km² of land send their water to this river. This is what lives on it.
- 902,000people live in the basin
- 64/km²people per km²
- 147maverage altitude of the basin
- 586mmof rain a year (basin average)
- 6.7°Caverage air temperature
- 24%protected areas
- 1.2%covered by lakes
What covers the basin
- 26% Forest
- 36% Cropland
- 21% 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
Biebrza: what you find on the way
- 4Weirs
- 2LocksŚluza Dębowo
- 6Ferry piers
- 2River beachesPlaża miejska w Goniądzu
From OpenStreetMap, within 1.9 km of the river. Not mapped is not the same as not there.
Cross-checked with our atlases
Biebrza 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.
1mountain at the sourcePeakyas
Mountains at the source (1)
Within 15 km of the source, by Peakyas
- Hrodzyenskaye Uzvyshsha6.0 km away
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
Biebrza in pictures




Tributaries
Where it flows, and what flows into it
It flows into
NarewTributaries (6)
Also: Rospuda, Netta, Ełk, Brzozówka, Sidra, Kamienna
Nearby
Rivers nearby
Where these numbers come from
| Name, length, places | Wikidata (Q857160) · 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 |
| Our other atlases | Peakyas — 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.