River
Österdal River
300 km from source to mouth · Sweden.
SwedenFlows into Dalälven
In numbers
Length
300km
Average flow
150m³/s
Basin
12,430km²
Drop
505m
from 646 m to 141 m
Country
1
The journey
From source to mouth
300 km of river and 35 stops on the way: 3 towns and cities on its banks, dams, bridges and the tributaries that feed it.
- 0 kmSourceat 646 m
- 2 kmDrevsjøen0.9 km²
- 11 kmVurrusjøen5.0 km²
- 15 kmFlötningssjön2.3 km²
- 21 kmStorbosjön3.0 km²
- 35 kmStorhån0.5 km²
- 41 kmHösthån1.2 km²
- 65 kmGösjön0.3 km²
- 69 kmÄlvrosfjorden0.9 km²
- 72 kmKringelsfjorden1.1 km²
- 77 kmHolmtjärnen0.5 km²
- 80 kmHedarfjorden2.5 km²
- 95 kmMaktjärnen5.6 km²
- 109 kmStorgeten0.7 km²
- 141 kmTrängseldammen36 km²
- 144 kmTrängslet Dam
- 156 kmÅsdammen, Dalarna2.3 km²
- 156 kmÅsen dam
- 158 kmLill-Ugsi0.7 km²
- 173 kmNässjön1.9 km²
- 183 kmVäsadammen1.8 km²
- 188 kmBlybergsdammen0.4 km²
- 191 kmOxbergssjön1.1 km²
- 201 kmSpjutmosjön5.9 km²
- 205 kmLädsjön0.4 km²
- 206 kmSästjärnen0.6 km²
- 218 kmOrsa Lake52 km²
- 218 kmMora12,602 people
- 264 kmSiljan291 km²
- 264 kmLeksandsbron
- 264 kmLeksand6,107 people
- 265 kmLimsjön0.9 km²
- 269 kmSmedby3,530 people
- 272 kmTunsta railway bridge
- 272 kmInsjön7.5 km²
- 286 kmMojesjön0.4 km²
- 300 kmDalälvenat 141 m
Water level along the river (RiverATLAS; the height is exaggerated). Towns: GeoNames and Wikidata; bridges, dams and tributaries: Wikidata.
River in Sweden
At the mouth it carries 146 m³/s on average: an Olympic pool every 17 seconds. It drops from 646 m to 141 m, 1.7 m per kilometre on average. Its basin covers 12,430 km², about the size of QA. 43,000 people live in it. Highest water, with the snowmelt: from April to June; lowest: from December to March. Dams and reservoirs hold back a large share of its water (19% of a year's flow).
Where to start
- MoraLargest city on its banks · 12,602 people
- Mora Airport (MXX)Nearest airport with scheduled flights, 6 km from the cityCar hire at MXX airport (Mora)Discover Cars · Affiliate link↗
- On the water21 ferry piers, marinas, boat rentals and boat ramps along the river (OpenStreetMap)
- Kayak and canoe3 put-ins and rapids mapped (OpenStreetMap)
- From June to AugustThe best months to visit
Österdal River, month by month
Highest water: from April to June
Lowest water: from December to March. Freezing months (average below −4 °C): from December to February. Melting snow makes up much of its water. Best months to visit: from June to August.
From about 100 m³/s in the lowest month to 170 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
Österdal River: the basin in numbers
12,549 km² of land send their water to this river. This is what lives on it.
- 43,000people live in the basin
- 4/km²people per km²
- 478maverage altitude of the basin
- 664mmof rain a year (basin average)
- 2.3°Caverage air temperature
- 16%protected areas
- 5.6%covered by lakes
- 0.9km³held in reservoirs
What covers the basin
- 84% Forest
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
Österdal River: what you find on the way
- 9Weirs
- 6WaterfallsFjätfallet Övre, Fjätfallet Nedre, Brudslöjefallet and 3 more
- 3RapidsDjurforsen
- 11Boat ramps
- 2Ferry piers
- 8MarinasÖna marina, Sanda Båthamn, Färnäs båtklubb and 5 more
- 27River beachesStranda på Drevsjø, Idre badplats, badplats Skepphusviken, Moraparken and 24 more
From OpenStreetMap, within 1.9 km of the river. Not mapped is not the same as not there.
Cross-checked with our atlases
Österdal River 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.
28lakes on its wayLakeyas
79mountains at the sourcePeakyas
Lakes and reservoirs (28)
Lakes it flows through, by Lakeyas
- Vurrusjøenkm 105.0km²
- Flötningssjönkm 152.3km²
- Trängseldammenkm 13536km²
- Åsdammen, Dalarnakm 1502.3km²
- Spjutmosjönkm 1935.9km²
- Orsa Lakekm 210 · 94 m deep52km²
- Siljankm 254 · 120 m deep291km²
- Insjönkm 261 · 18 m deep7.5km²
20 more on LakeyasLakeyas is coming soonOpen Lakeyas ↗
Mountains at the source (79)
Within 15 km of the source, by Peakyas
- Kvitvola13 km away1,154m
- Svarthammaren12 km away1,142m
- Nordre Kvitvolaknappen13 km away1,088m
- Kvitvordaknappen14 km away1,060m
- Galtåsknappen9.0 km away890m
- Luvhøa13 km away880m
- Divelia11 km away
- Syringslia12 km away
71 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
Österdal River in pictures
Tributaries
Where it flows, and what flows into it
It flows into
DalälvenTributaries (3)
Also: Rotnen, Fjätan, Dysån
Nearby
Rivers nearby
Where these numbers come from
| Name, length, places | Wikidata (Q298372) · 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, 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.



