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River

River Slaney

117 km from source to mouth · Ireland.

IrelandIrelandFlows into Irish Sea7th longest in Ireland

Follow the riverMonth by month

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

In numbers

Length

117km

Average flow

40m³/s

Basin

1,762km²

Drop

126m

from 124 m to -2 m

Country

1

The journey

From source to mouth

117 km of river and 7 stops on the way: 4 towns and cities on its banks, dams, bridges and the tributaries that feed it.

124 m-2 m
Lugnaquillaat 124 m0 km
Baltinglass2,137 people10 km
Tullow4,673 people37 km
New Bridge57 km
Bunclody1,984 people63 km
Enniscorthy Railway Bridge90 km
Enniscorthy9,709 people91 km
Deeps Bridge108 km
Irish Seaat -2 m117 km
0255075100117 km
  1. 0 kmLugnaquillaat 124 m
  2. 10 kmBaltinglass2,137 people
  3. 37 kmTullow4,673 people
  4. 57 kmNew Bridge
  5. 63 kmBunclody1,984 people
  6. 90 kmEnniscorthy Railway Bridge
  7. 91 kmEnniscorthy9,709 people
  8. 108 kmDeeps Bridge
  9. 117 kmIrish Seaat -2 m

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

River in Ireland

At the mouth it carries 40 m³/s on average: an Olympic pool every 63 seconds. It drops from 124 m to -2 m, 1.1 m per kilometre on average. Its basin covers 1,762 km², about the size of GP. 72,000 people live in it. Highest water: from December to January; lowest: July. No large dam holds it back: it is one of the world's free-flowing rivers.

Read more on Wikipedia

Where to start

  • EnniscorthyLargest city on its banks · 9,709 people
  • Dublin Airport (DUB)Nearest airport with scheduled flights, 105 km from the cityCar hire at DUB airport (Dublin)Discover Cars · Affiliate link
  • On the water1 ferry piers, marinas, boat rentals and boat ramps along the river (OpenStreetMap)
  • From June to AugustThe best months to visit

River Slaney, month by month

Highest water: from December to January

Lowest water: July. Best months to visit: from June to August.

72
5°105 mmJan
59
5°83 mmFeb
47
6°79 mmMar
31
8°60 mmApr
25
11°67 mmMay
18
14°59 mmJun
15
15°59 mmJul
22
15°78 mmAug
34
13°88 mmSep
48
11°99 mmOct
59
7°99 mmNov
70
6°111 mmDec
Water (estimated flow)Air (average) Rain (mm)Best months

From about 15 m³/s in the lowest month to 72 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

River Slaney: the basin in numbers

1,757 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.
  • 72,000people live in the basin
  • 41/km²people per km²
  • 136maverage altitude of the basin
  • 1,017mmof rain a year (basin average)
  • 9.2°Caverage air temperature

What covers the basin

  • 34% Cropland
  • 45% Pasture

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

River Slaney: what you find on the way

  • 27Weirs
  • 1Boat ramps

From OpenStreetMap, within 1.3 km of the river. Not mapped is not the same as not there.

Cross-checked with our atlases

River Slaney 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.

  • 1beach at the mouth or on the banksCoastya
  • 51mountains at the sourcePeakyas
  • 1island off the mouthIslandyas

Beaches (1)

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

  1. Curracloe Beach10 km away15.1°C

Open Coastya ↗

Mountains at the source (51)

Within 15 km of the source, by Peakyas

  1. Lugnaquilla0.4 km away · prominence 905 m925m
  2. Tonelagee11 km away · prominence 204 m817m
  3. Cloghernagh2.6 km away800m
  4. Conavalla5.1 km away · prominence 109 m734m
  5. Corrigasleggaun2.0 km away · prominence 49 m794m
  6. Slievemaan2.0 km away · prominence 54 m759m
  7. Camenabologue3.9 km away758m
  8. Table Mountain5.2 km away701m

43 more on PeakyasOpen Peakyas ↗

Islands off the mouth (1)

Within 30 km of the mouth, by Islandyas

  1. Tuskar Rock26 km away

Islandyas is coming soonOpen Islandyas ↗

From space

The source and the mouth, seen from orbit

River Slaney: satellite view of the source
The source14 km across
River Slaney: 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

River Slaney in pictures

River Slaney
Spockyippee · CC BY 4.0
BaltinglassSlaney4948
Sarah777 · Public domain
River Slaney at Altamont
Colin Park · CC BY-SA 2.0
SlaneyAtStartford 4444w
Sarah777 at English Wikipedia · Public domain

Tributaries

Where it flows, and what flows into it

Tributaries (2)

Also: River Derry, River Bann

Where these numbers come from

Name, length, placesWikidata (Q1122203) · CC0
Course, profile, basinRiverATLAS v1.0 (HydroATLAS, Linke et al. 2019) · CC BY 4.0 — followed from the source to the mouth 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 atlasesCoastya, 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