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River

Skjálfandafljót

178 km from source to mouth · Iceland.

IcelandIcelandFlows into Skjálfandi3rd longest in Iceland

Follow the riverMonth by month

SourceMouth
The river and every tributary in its basin, drawn from RiverATLAS (CC BY 4.0).

In numbers

Length

178km

Average flow

80m³/s

Basin

3,860km²

Drop

910m

from 910 m to 0 m

Country

1

The journey

From source to mouth

178 km of river and 7 stops on the way: 0 towns and cities on its banks, dams, bridges and the tributaries that feed it.

910 m0 m
Vatnajökullat 910 m0 km
Íshólsvatn5.1 km²96 km
Aldeyjarfoss20 m100 km
Sigurðarstaðatjörn0.3 km²122 km
Goðafoss141 km
Barnafoss149 km
Skjálfandiat 0 m178 km
050100150178 km
  1. 0 kmVatnajökullat 910 m
  2. 96 kmÍshólsvatn5.1 km²
  3. 100 kmAldeyjarfoss20 m
  4. 100 kmIngvararfoss
  5. 113 kmBrunnvatn0.6 km²
  6. 122 kmSigurðarstaðatjörn0.3 km²
  7. 141 kmGoðafoss
  8. 149 kmBarnafoss
  9. 178 kmSkjálfandiat 0 m

Water level along the river (RiverATLAS; the height is exaggerated). Towns: GeoNames and Wikidata; bridges, dams and tributaries: Wikidata.

River in Iceland

At the mouth it carries 80 m³/s on average: an Olympic pool every 31 seconds. It drops from 910 m to 0 m, 5.1 m per kilometre on average. Its basin covers 3,860 km², about the size of CV. Highest water, with the snowmelt: May; lowest: from January to April. No large dam holds it back: it is one of the world's free-flowing rivers.

Read more on Wikipedia

Where to start

Skjálfandafljót, month by month

Highest water: May

Lowest water: from January to April. Melting snow makes up much of its water. Best months to visit: from June to August.

12
-3°90 mmJan
12
-3°75 mmFeb
12
-2°79 mmMar
12
0°60 mmApr
290
4°48 mmMay
180
7°52 mmJun
92
8°61 mmJul
54
8°78 mmAug
62
5°79 mmSep
86
2°101 mmOct
44
-1°86 mmNov
20
-3°87 mmDec
Water (estimated flow)Air (average) Rain (mm)Best months

From about 12 m³/s in the lowest month to 290 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

Skjálfandafljót: the basin in numbers

3,108 km² of land send their water to this river. This is what lives on it.

Free-flowingDams upstream can hold only 0.0% of a year's flow: the river still keeps its natural rhythm.
  • 483people live in the basin
  • 727maverage altitude of the basin
  • 1,139mmof rain a year (basin average)
  • 0.0°Caverage air temperature
  • 28%protected areas
  • 0.4%covered by lakes
  • 8%glaciers
  • 3%permafrost

What covers the basin

  • 8% Ice

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

Skjálfandafljót: what you find on the way

  • 13WaterfallsHrafnabjargafoss, Ingvararfoss, Aldeyjarfoss and 10 more

From OpenStreetMap, within 1.5 km of the river. Not mapped is not the same as not there.

Cross-checked with our atlases

Skjálfandafljót 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
  • 3lakes on its wayLakeyas
  • 7beaches at the mouth and on the banksCoastya
  • 1mountain at the sourcePeakyas
  • 2islands off the mouthIslandyas

Waterfalls (4)

On the river, by Cascadyas

  1. Aldeyjarfosskm 9420m
  2. Ingvararfosskm 94
  3. Goðafosskm 13312m
  4. Barnafosskm 140

Cascadyas is coming soonOpen Cascadyas ↗

Lakes and reservoirs (3)

Lakes it flows through, by Lakeyas

  1. Íshólsvatnkm 915.1km²
  2. Brunnvatnkm 1060.6km²
  3. Sigurðarstaðatjörnkm 1150.3km²

Lakeyas is coming soonOpen Lakeyas ↗

Beaches (7)

At the mouth (25 km) and on the banks, by Coastya

  1. Sjávarsandur2.0 km away9.3°C
  2. Saltvík9.1 km away · cove9.3°C
  3. Héðinsvík16 km away · cove9.3°C
  4. Ærvík7.5 km away · cove9.3°C
  5. Skálavík6.3 km away · cove9.3°C
  6. Náttfaravík4.4 km away · cove9.3°C
  7. Eyrarvík19 km away · cove9.3°C

Open Coastya ↗

Mountains at the source (1)

Within 15 km of the source, by Peakyas

  1. Tungnafell11 km away

Open Peakyas ↗

Islands off the mouth (2)

Within 30 km of the mouth, by Islandyas

  1. Flatey24 km away2.8km²
  2. Lundey, Skjálfandi18 km away0.1km²

Islandyas is coming soonOpen Islandyas ↗

From space

The source and the mouth, seen from orbit

Skjálfandafljót: satellite view of the source
The source14 km across
Skjálfandafljót: satellite view of the mouth
The mouth10 km across

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

Skjálfandafljót in pictures

Tributaries

Where it flows, and what flows into it

Tributaries (1)

Also: Svartá

Where these numbers come from

Name, length, placesWikidata (Q1339368) · CC0
Course, profile, basinRiverATLAS v1.0 (HydroATLAS, Linke et al. 2019) · CC BY 4.0 — followed along the river network from the point given by Wikidata
FlowWaterGAP (RiverATLAS), 1971–2000 · CC BY 4.0
Climate along the riverWorldClim (RiverATLAS), 1970–2000 · CC BY 4.0
Towns, bridges, damsWikidata · CC0; GeoNames · CC BY 4.0
Along the river© OpenStreetMap contributors · ODbL
ImagesEOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons
Our other atlasesCascadyas, Lakeyas, Coastya, Peakyas, Islandyas — 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.

beachesCoastyaFind your beach: sea temperature, sun and swimming month by month.Visit
lakesLakeyasEvery lake on Earth: water temperature, ice, depth and the shore.Coming soonVisit
mountainsPeakyasEvery summit in 3D: summit weather, the 0 °C line, huts and trails.Visit
waterfallsCascadyasEvery waterfall: height, flow month by month and when it roars.Coming soonVisit
islandsIslandyasEvery island from the sea up: size, sea temperature, ferries and 3D.Coming soonVisit
riversRiveryasEvery river from source to sea: the journey, the flow and the basin in numbers.You are here
canyonsCanyonyasEvery canyon cut to scale: depth to the floor, rim and floor temperatures, trails and viewpoints.Coming soonVisit