River
Our
96 km from source to mouth · Luxembourg, Germany and Belgium.
Luxembourg, Germany and BelgiumFlows into Sauer1st longest in Luxembourg
In numbers
Length
96km
Average flow
9.4m³/s
Basin
187km²
Drop
229m
from 408 m to 179 m
Countries
3
The journey
From source to mouth
96 km of river and 14 stops on the way: 5 towns and cities on its banks, dams, bridges and the tributaries that feed it.
- 0 kmHigh Fensat 408 m
- 9 kmAtzerath107 people
- 20 kmLommersweiler1,215 people
- 26 kmUlftributary
- 28 kmReuland1,592 people
- 30 kmStubach Bridge
- 45 kmTëntesmillen - Dahnen Our Bridge
- 56 kmWanderbrücke Dornauelsmühle
- 66 kmGemünd Our Bridge
- 70 kmStolzembourg - Keppeshausen Our Bridge
- 71 kmPasserelle de Bivels
- 79 kmVianden2,203 people
- 81 kmSchloss Roth
- 83 kmKörperich1,089 people
- 92 kmIrsentributary
- 96 kmSauerat 179 m
Water level along the river (RiverATLAS; the height is exaggerated). Towns: GeoNames and Wikidata; bridges, dams and tributaries: Wikidata.
River in Belgium, Germany and Luxembourg
At the mouth it carries 9.4 m³/s on average: an Olympic pool every 267 seconds. It drops from 408 m to 179 m, 2.4 m per kilometre on average. Its basin covers 187 km². 454,000 people live in it. Highest water: from December to January. Its dams hold back little of its water (5.0% of a year's flow).
Where to start
- ViandenLargest city on its banks · 2,203 people
- Luxembourg-Findel International Airport (LUX)Nearest airport with scheduled flights, 34 km from the cityCar hire at LUX airport (Luxembourg)Discover Cars · Affiliate link↗
- On the water3 ferry piers, marinas, boat rentals and boat ramps along the river (OpenStreetMap)
- From June to SeptemberThe best months to visit
Our, month by month
Highest water: from December to January
Best months to visit: from June to September.
From about 13 m³/s in the lowest month to 71 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
Our: the basin in numbers
3,011 km² of land send their water to this river. This is what lives on it.
- 454,000people live in the basin
- 150/km²people per km²
- 404maverage altitude of the basin
- 917mmof rain a year (basin average)
- 8.3°Caverage air temperature
- 46%protected areas
- 0.1%covered by lakes
- 0.1km³held in reservoirs
What covers the basin
- 36% Forest
- 20% Cropland
- 26% Pasture
- 9% 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
Our: what you find on the way
- 12Weirs
- 1Waterfalls
- 3Boat ramps
From OpenStreetMap, within 1.5 km of the river. Not mapped is not the same as not there.
Cross-checked with our atlases
Our 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.
78mountains at the sourcePeakyas
Mountains at the source (78)
Within 15 km of the source, by Peakyas
- Weißer Stein3.8 km away693m
- Schwarzer Mann14 km away698m
- Eichels-Berg0.5 km away653m
- Hohe Mark14 km away609m
- Giesberg11 km away607m
- Schartenknopf7.0 km away572m
- Dickelt12 km away569m
- Dickert12 km away562m
70 more on PeakyasOpen Peakyas ↗
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
Our in pictures
Tributaries
Where it flows, and what flows into it
It flows into
SauerTributaries (9)
Also: Braunlauf, Ulf, Kolvenderbach, Medenderbach, Schiebach, Ihrenbach, Irsen, Irmisch, Ribbach
Nearby
Rivers nearby
Where these numbers come from
| Name, length, places | Wikidata (Q318762) · 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.
