River
Obra
253 km from source to mouth · Poland.
PolandFlows into Warta
In numbers
Length
253km
Average flow
10m³/s
Basin
6,900km²
Drop
64m
from 89 m to 25 m
Country
1
The journey
From source to mouth
253 km of river and 22 stops on the way: 4 towns and cities on its banks, dams, bridges and the tributaries that feed it.
- 0 kmSourceat 89 m
- 67 kmWonieść Lake2.6 km²
- 74 kmKościan24,096 people
- 133 kmJezioro Obrzańskie0.4 km²
- 135 kmJezioro Berzyńskie2.6 km²
- 154 kmJezioro Kopanickie0.3 km²
- 156 kmJezioro Wielkowiejskie (Bruzda Zbąszyńska)0.6 km²
- 158 kmJezioro Chobienickie1.4 km²
- 162 kmJezioro Grojeckie0.5 km²
- 169 kmJezioro Zbąszyńskie6.3 km²
- 171 kmZbąszyń7,185 people
- 181 kmJezioro Lutol1.1 km²
- 192 kmWielkie Lake1.8 km²
- 195 kmWędromierz0.6 km²
- 210 kmŻółwino0.3 km²
- 216 kmMiędzyrzecz18,669 people
- 218 kmSaint Adalbert church in Święty Wojciech
- 220 kmPaklicatributary
- 222 kmJezioro Głębokie1.0 km²
- 225 kmJezioro Kursko0.7 km²
- 226 kmDługie0.7 km²
- 233 kmZalew Bledzewski0.6 km²
- 249 kmSkwierzyna10,051 people
- 253 kmWartaat 25 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 10 m³/s on average: an Olympic pool every 250 seconds. It drops from 89 m to 25 m, 0.3 m per kilometre on average. Its basin covers 6,900 km², about the size of PS. 465,000 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
- KościanLargest city on its banks · 24,096 people
- Poznań-Ławica Airport (POZ)Nearest airport with scheduled flights, 39 km from the cityCar hire at POZ airport (Poznań)Discover Cars · Affiliate link↗
- On the water14 ferry piers, marinas, boat rentals and boat ramps along the river (OpenStreetMap)
- Kayak and canoe7 put-ins and rapids mapped (OpenStreetMap)
- From May to SeptemberThe best months to visit
Obra, month by month
Highest water: from March to May
Lowest water: from January to February. Best months to visit: from May to September.
From about 13 m³/s in the lowest month to 34 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
Obra: the basin in numbers
5,666 km² of land send their water to this river. This is what lives on it.
- 465,000people live in the basin
- 83/km²people per km²
- 85maverage altitude of the basin
- 542mmof rain a year (basin average)
- 8.5°Caverage air temperature
- 13%protected areas
- 1.2%covered by lakes
What covers the basin
- 26% Forest
- 53% Cropland
- 13% 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
Obra: what you find on the way
- 30WeirsWeir Rybojady, Weir Jezioro Długie and 28 more
- 2Locks
- 7Rapids
- 9Boat rampsMiejsce wodowania łodzi, Public Canoe/Kayak Launch, Stanica Policko and 6 more
- 4Marinas"U Marcina" przystań wodna, Przystań Wodna, Stanica Wędkarska and 1 more
- 2River beachesPlaża Łazienki
From OpenStreetMap, within 1.7 km of the river. Not mapped is not the same as not there.
Cross-checked with our atlases
Obra 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.
16lakes on its wayLakeyas
Lakes and reservoirs (16)
Lakes it flows through, by Lakeyas
- Wonieść Lakekm 622.6km²
- Jezioro Berzyńskiekm 125 · 4 m deep2.6km²
- Jezioro Zbąszyńskiekm 1566.3km²
- Wielkie Lakekm 1781.8km²
- Wędromierzkm 1810.6km²
- Jezioro Głębokiekm 2061.0km²
- Jezioro Kurskokm 2090.7km²
- Długiekm 2100.7km²
8 more on LakeyasLakeyas is coming soonOpen Lakeyas ↗
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
Obra in pictures
Tributaries
Where it flows, and what flows into it
It flows into
WartaPoland808 km200 m³/sTributaries (3)
Also: Szarka, Paklica, Letnica
Germany
CzechiaNearby
Rivers nearby
Where these numbers come from
| Name, length, places | Wikidata (Q989796) · 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 |
| Our other atlases | Lakeyas — 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
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