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Ireland Ireland Waterfall

Poulaphouca

A 20 m drop.

When to go

Dec2025. Poulaphouca Reservoir, County Wicklow, Ireland 01
Ridiculopathy · CC0

In numbers.

20m

Height

OpenStreetMap

7.5m³/s

Average flow

estimate

Mar
Sep–Nov

Best months

1.5MW

Water power

estimate

The water at Poulaphouca, month by month

It roars from October to February.

The fullest months: from October to February.

  1. 12 m³/sJan
  2. 8.1 m³/sFeb
  3. 6.3 m³/sMar
  4. 4.4 m³/sApr
  5. 2.9 m³/sMay
  6. 3.0 m³/sJun
  7. 3.9 m³/sJul
  8. 6.0 m³/sAug
  9. 5.2 m³/sSep
  10. 9.3 m³/sOct
  11. 13 m³/sNov
  12. 13 m³/sDec
high water best months to go

From about 2.9 m³/s in the lowest month to 13 m³/s in the highest. Best months to go, with plenty of water and pleasant days: March and from September to November.

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 and bridge in County Wicklow, Ireland

Poulaphouca is a waterfall in Ireland. The water falls 20 m over a front 10 m wide.

Read more on Wikipedia

Getting there.

  • Valleymountnearest town · 2.7 km in a straight line
  • Parking 220 m awaynearest car park in OpenStreetMap, straight line
  • Dublin Airport (DUB)nearest airport with scheduled flights · 41 km in a straight lineCar hire at DUB airport (Dublin)Discover Cars · Affiliate link
  • March and from September to Novemberbest months to go (estimate)

Plan your visit

Stay, explore and get there

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.

How big is it?

How big it really is.

20 mPoulaphouca1.8 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.

1.5 MW

About 7.5 m³/s falling 20 m: the power of the water as it drops.

  • enough to power about 368 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.

Poulaphouca 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 Liffey through the falls
140 m160 m180 mPoulaphouca-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.

The valley below the falls
−690 m+690 m

Around the falls the river drops 46 m in 1.4 km.

What is around.

  • 2viewpoints
  • 1waymarked walking routesBlessington to Hollywood Village
  • 17car parks
  • —swimming spots
  • —picnic sites
  • —toilets
  • 2information boards and visitor centres
  • —bus stops within 1 km
  • —other named waterfalls within 4 km
  • —caves
  • —campsites
  • 37hotels, B&Bs and huts within 6 kmMonavalla B&B, Avon Rí, Humphrystown House and 34 more
  • 5restaurants 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).

Towns nearby

  • Valleymount2.7 km in a straight line
  • Blessington6.9 km in a straight line
  • Eadestown9.6 km in a straight line
  • Kilcullen11 km in a straight line
  • Old Kilcullen12 km in a straight line
  • Naas12 km in a straight line
  • Athgarvan14 km in a straight line
  • Johnstown14 km in a straight line

Weather

The weather, month by month.

JanFebMarAprMayJunJulAugSepOctNovDec
Afternoon °C6781114171918161397
Night °C22246911109742
Rain & snow (mm)9275766875899610484107107104
Wet days171515151516191815171817
Sun h/day1.72.94.15.76.66.15.44.84.63.22.21.4
Snow on the ground (cm)443100000013

Long-term averages 1991–2020 (NASA POWER) for a cell about 55 km wide. Not a forecast.

Photos

Through visitors' eyes.

The Dry Bridge at Poulaphouca, County Wicklow, Ireland
Ridiculopathy · CC BY-SA 4.0
Season 4 filming.
Roddy Scott · CC BY-SA 4.0

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
202083%255%73%63%28%119%144%162%211%123%125%115%
2021163%149%90%35%182%46%101%225%84%134%40%108%
202239%155%71%73%99%97%53%46%161%152%115%93%
202383%38%194%119%54%77%167%266%185%166%82%150%
202493%153%167%169%106%71%226%77%99%70%88%182%
2025126%110%40%158%87%110%97%52%168%109%152%112%

130% wetter than usual 70% drier than usual

Compare with the waterfalls nearby.

Poulaphouca

Ireland

  • 20 mHeight
  • 7.5 m³/sAverage flow
  • Mar, Sep–NovBest months

Powerscourt Waterfall

Ireland

  • 121 mHeight
  • 0.32 m³/sAverage flow
  • Apr, Sep–NovBest months

See the guide

Glenmacnass Waterfall

Ireland

  • 80 mHeight
  • 0.66 m³/sAverage flow
  • Apr, Sep–NovBest months

See the guide

Devil's Appendix

United Kingdom

  • —Height
  • —Average flow
  • Jul–OctBest months

See the guide

About these numbers

Names, height, width, riverWikidata (Q3775762) · 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.