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Iceland Iceland Waterfall

Fossárfoss

A 15 m drop.

When to go

Fossárfoss
Bromr · CC BY-SA 3.0

In numbers.

15m

Height

OpenStreetMap

0.94m³/s

Average flow

estimate

Jun–Sep

Best months

139kW

Water power

estimate

The water at Fossárfoss, month by month

It roars from April to June and from October to January.

The fullest months: from April to June and from October to January, with the snowmelt.

  1. 1.4 m³/sJan
  2. 0.9 m³/sFeb
  3. 0.8 m³/sMar
  4. 1.3 m³/sApr
  5. 1.9 m³/sMay
  6. 1.2 m³/sJun
  7. 0.7 m³/sJul
  8. 0.6 m³/sAug
  9. 0.9 m³/sSep
  10. 1.4 m³/sOct
  11. 1.6 m³/sNov
  12. 1.5 m³/sDec
high water best months to go

From about 0.55 m³/s in the lowest month to 1.9 m³/s in the highest. Best months to go, with plenty of water and pleasant days: from June to September.

Estimate: the timing comes from rain, snowmelt and evaporation (NASA POWER, 1991–2020); the amounts from the river model of HydroATLAS (WaterGAP, 1971–2000). Dams upstream can change the real flow.

Waterfall in Iceland

Fossárfoss is a waterfall in Iceland. The water falls 15 m.

Getting there.

Plan your visit

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How big is it?

How big it really is.

15 mFossárfoss1.8 ma person9.0 ma house56 mTower of Pisa

Height of the drop as mapped in OpenStreetMap (© OpenStreetMap contributors). Buildings and the person are drawn at the same scale.

139 kW

About 0.94 m³/s falling 15 m: the power of the water as it drops.

  • enough to power about 35 homes, if it were all turned into electricity

Power of falling water = density × gravity × flow × height. Average flow and height as shown above; an estimate.

Seen from the sky.

8 × 8 km of cloud-free satellite image, with what OpenStreetMap knows around the falls.

Fossárfoss seen from above (Sentinel-2) N 2 km

Sentinel-2 cloudless 2016 (EOX, CC BY 4.0), 8 × 8 km, north up. Points © OpenStreetMap contributors.

The Fossá through the falls
0 m25 m50 m75 mFossárfoss-1.5 km-1 km-0.5 km0+0.5 km← upstreamdownstream →

The line follows the river as mapped in OpenStreetMap; heights from the 30 m Copernicus model, which smooths narrow drops — the published height of the falls is the one above.

Around the falls the river drops 81 m in 2.4 km.

What is around.

  • 1viewpoints
  • —waymarked walking routes
  • 4car parks
  • —swimming spots
  • 6picnic sites
  • —toilets
  • 2information boards and visitor centres
  • —bus stops within 1 km
  • 1other named waterfalls within 4 kmVindássfoss
  • —caves
  • 1campsitesEyjólfsstaðir
  • 1hotels, B&Bs and huts within 6 kmEyjólfsstaðir í Fossárdal
  • —restaurants and cafés within 3 km

Counted in OpenStreetMap, the map anyone can edit, up to 2 km around the falls (unless noted). A low number may just mean nobody has mapped it yet. © OpenStreetMap contributors (ODbL).

Weather

The weather, month by month.

JanFebMarAprMayJunJulAugSepOctNovDec
Afternoon °C1124712141210521
Night °C-4-4-4-2268751-3-4
Rain & snow (mm)16914413911510792129130153185171165
Wet days211820181718192019212021
Sun h/day0.41.13.86.47.37.65.95.03.51.60.60.4
Snow on the ground (cm)46606650193004122032

Long-term averages 1991–2020 (NASA POWER) for a cell about 55 km wide, with temperatures carried to the height of the falls (22 m) at −6.5 °C per 1,000 m. Not a forecast.

Photos

Through visitors' eyes.

Berufjardara 1
Christian Bickel · CC BY-SA 2.0 de
Berufjardara 2
Christian Bickel · CC BY-SA 2.0 de

Recent years

Wet years and dry years

Rain of each month as a share of the 1991–2020 average. A wet season above 100 % usually means a fuller waterfall.

JanFebMarAprMayJunJulAugSepOctNovDec
202075%141%92%92%45%92%80%75%121%132%88%189%
202162%120%72%41%69%133%33%36%118%141%75%63%
202259%118%126%80%147%156%95%82%94%91%243%54%
202390%72%122%134%75%132%67%42%154%88%78%45%
202471%69%154%73%72%83%67%164%57%72%50%43%
2025112%127%59%77%72%214%67%73%143%54%50%127%

130% wetter than usual 70% drier than usual

Compare with the waterfalls nearby.

Fossárfoss

Iceland

  • 15 mHeight
  • 0.94 m³/sAverage flow
  • Jun–SepBest months

Hengifoss

Iceland

  • 128 mHeight
  • —Average flow
  • Jun–AugBest months

See the guide

Strútsfoss

Iceland

  • —Height
  • 0.15 m³/sAverage flow
  • Jun–AugBest months

See the guide

Litlanesfoss

Iceland

  • 30 mHeight
  • —Average flow
  • Jun–SepBest months

See the guide

About these numbers

Names, height, width, riverWikidata (Q2479556) · CC0
Height of the drop© OpenStreetMap contributors · ODbL
River flow and catchmentHydroATLAS / RiverATLAS v1.0 (Linke et al. 2019) · CC BY 4.0
ClimateNASA POWER, 1991–2020
Relief, river profile, 3D modelCopernicus DEM GLO-30 · © DLR e.V., © Airbus Defence and Space GmbH, Copernicus/ESA
Paths, viewpoints, parking© OpenStreetMap contributors · ODbL
ImagesEOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons

Every figure is an average, an estimate or a count from a public dataset. Licences and methods: data sources.

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.