River
Traun
153 km from source to mouth · Austria.
AustriaFlows into Danube4th longest in Austria
In numbers
Length
153km
Average flow
140m³/s
Basin
4,277km²
Drop
453m
from 699 m to 246 m
Country
1
The journey
From source to mouth
153 km of river and 45 stops on the way: 26 towns and cities on its banks, dams, bridges and the tributaries that feed it.
- 0 kmSalzkammergut and Upper Austria Alpsat 699 m
- 3 kmGrundlsee3.4 km²
- 7 kmAltausseer See1.8 km²
- 8 kmMercedes-Brücke
- 9 kmKlamm und Wasserfälle am Teichenbach
- 24 kmMühlbach
- 28 kmGosaubachtributary
- 30 kmHallstätter See7.8 km²
- 43 kmElisabethbrücke, Bad Ischl
- 45 kmKreuzstein
- 45 kmHohenzollern Wasserfall
- 62 kmEbensee4,125 people
- 73 kmAltmünster4,496 people
- 75 kmTraunsee23 km²
- 75 kmTraunbrücke
- 75 kmGmunden13,191 people
- 77 kmPinsdorf3,849 people
- 83 kmLaakirchen9,861 people
- 88 kmTraunfallbrücke
- 88 kmTraunfall
- 98 kmStadl-Traun3,643 people
- 98 kmAgertributary
- 100 kmLambach3,279 people
- 108 kmAlmtributary
- 111 kmGunskirchen3,778 people
- 113 kmWimpassing5,748 people
- 115 kmLichtenegg6,163 people
- 117 kmrailway bridge Wels - Thalheim
- 117 kmBernardin4,300 people
- 117 kmLaahen4,836 people
- 117 kmThalheim bei Wels4,294 people
- 118 kmOberhaid5,100 people
- 118 kmWels16,857 people
- 118 kmWÖS5,000 people
- 126 kmMarchtrenk8,394 people
- 135 kmOedt3,046 people
- 137 kmHaid7,424 people
- 138 kmTraun25,345 people
- 138 kmSipbachtributary
- 139 kmSankt Dionysen3,012 people
- 139 kmLangholzfeld3,622 people
- 140 kmAnsfelden18,251 people
- 141 kmSankt Martin6,984 people
- 141 kmDoppl3,136 people
- 150 kmKremstributary
- 150 kmSteyregg4,889 people
- 153 kmDanubeat 246 m
Water level along the river (RiverATLAS; the height is exaggerated). Towns: GeoNames and Wikidata; bridges, dams and tributaries: Wikidata.
River in Austria
At the mouth it carries 135 m³/s on average: an Olympic pool every 19 seconds. It drops from 699 m to 246 m, 3.0 m per kilometre on average. Its basin covers 4,277 km², about the size of CV. 11.9 million people live in it. Highest water: from March to May; lowest: from December to February. Its dams hold back little of its water (3.9% of a year's flow).
Where to start
- TraunLargest city on its banks · 25,345 people
- Linz-Hörsching Airport (LNZ)Nearest airport with scheduled flights, 4 km from the cityCar hire at LNZ airport (Linz)Discover Cars · Affiliate link↗
- On the water72 ferry piers, marinas, boat rentals and boat ramps along the river (OpenStreetMap)
- Kayak and canoe2 put-ins and rapids mapped (OpenStreetMap)
- From August to SeptemberThe best months to visit
Traun, month by month
Highest water: from March to May
Lowest water: from December to February. Best months to visit: from August to September.
From about 1,000 m³/s in the lowest month to 2,100 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
Traun: the basin in numbers
83,594 km² of land send their water to this river. This is what lives on it.
- 11.9millionpeople live in the basin
- 143/km²people per km²
- 824maverage altitude of the basin
- 980mmof rain a year (basin average)
- 6.5°Caverage air temperature
- 25%protected areas
- 0.7%covered by lakes
- 2%permafrost
- 1.9km³held in reservoirs
What covers the basin
- 54% Forest
- 23% Cropland
- 22% Pasture
- 6% 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
Traun: what you find on the way
- 220WeirsSeeklause Steeg, Holzrechen, Goiserer Polster and 217 more
- 27WaterfallsZimitzbach Wasserfall, Schleierfall, Hohenzoller waterfall and 24 more
- 2Rapids
- 35Boat ramps
- 22Ferry piersGössl, Pavillon, Seehotel and 19 more
- 10MarinasSteirischer Yachtclub, Segelclub Ebensee, Segelclub Altmünster and 7 more
- 9River beachesFKK-Badestrand, Badeplatz Bettelumkehr, Naturbadeplatz Kronhütter and 6 more
From OpenStreetMap, within 2.4 km of the river. Not mapped is not the same as not there.
Cross-checked with our atlases
Traun 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.
4waterfalls on the riverCascadyas
4lakes on its wayLakeyas
162mountains at the sourcePeakyas
Waterfalls (4)
On the river, by Cascadyas
- Klamm und Wasserfälle am Teichenbachkm 9
- Mühlbachkm 24
- Hohenzollern Wasserfallkm 44
- Traunfallkm 87
Cascadyas is coming soonOpen Cascadyas ↗
Lakes and reservoirs (4)
Lakes it flows through, by Lakeyas
- Grundlseekm 3 · 64 m deep3.4km²
- Altausseer Seekm 71.8km²
- Hallstätter Seekm 30 · 125 m deep7.8km²
- Traunseekm 74 · 191 m deep23km²
Lakeyas is coming soonOpen Lakeyas ↗
Mountains at the source (162)
Within 15 km of the source, by Peakyas
- Großer Priel11 km away · prominence 1,700 m2,515m
- Spitzmauer9.9 km away2,446m
- Schermberg9.7 km away2,396m
- Großer Hochkasten7.9 km away2,389m
- Rotgschirr6.6 km away2,270m
- Feuertalberg6.9 km away2,376m
- Temlberg8.6 km away2,331m
- Kleiner Hochkasten8.3 km away2,352m
154 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
Traun in pictures
Tributaries
Where it flows, and what flows into it
It flows into
DanubeTributaries (12)
Also: Ager, Krems, Alm, Rote Traun, Weiße Traun, Ischl, Rettenbach, Sipbach, Aiterbach, Grundlseer Traun, Welser Mühlbach, Gosaubach
Nearby
Rivers nearby
Where these numbers come from
| Name, length, places | Wikidata (Q664341) · 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 | Cascadyas, Lakeyas, 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.



