River
River Slaney
117 km from source to mouth · Ireland.
IrelandFlows into Irish Sea7th longest in Ireland
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.
- 0 kmLugnaquillaat 124 m
- 10 kmBaltinglass2,137 people
- 37 kmTullow4,673 people
- 57 kmNew Bridge
- 63 kmBunclody1,984 people
- 90 kmEnniscorthy Railway Bridge
- 91 kmEnniscorthy9,709 people
- 108 kmDeeps Bridge
- 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.
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.
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.
- 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
- Curracloe Beach10 km away15.1°C
Mountains at the source (51)
Within 15 km of the source, by Peakyas
- Lugnaquilla0.4 km away · prominence 905 m925m
- Tonelagee11 km away · prominence 204 m817m
- Cloghernagh2.6 km away800m
- Conavalla5.1 km away · prominence 109 m734m
- Corrigasleggaun2.0 km away · prominence 49 m794m
- Slievemaan2.0 km away · prominence 54 m759m
- Camenabologue3.9 km away758m
- Table Mountain5.2 km away701m
43 more on PeakyasOpen Peakyas ↗
Islands off the mouth (1)
Within 30 km of the mouth, by Islandyas
- Tuskar Rock26 km away
Islandyas is coming soonOpen Islandyas ↗
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
River Slaney in pictures




Tributaries
Where it flows, and what flows into it
Tributaries (2)
Also: River Derry, River Bann
Nearby
Rivers nearby
Where these numbers come from
| Name, length, places | Wikidata (Q1122203) · CC0 |
|---|---|
| Course, profile, basin | RiverATLAS v1.0 (HydroATLAS, Linke et al. 2019) · CC BY 4.0 — followed from the source to the mouth 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 | 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.