Pontoon water level

Name: Pontoon water level (Office of Public Works (waterlevel.ie))
Creator: Office of Public Works (waterlevel.ie)
License: https://creativecommons.org/licenses/by/4.0/

Lake, L. Cullin, Mayo, Ireland

Directions

Within the normal range

Water level

1.05m Down 0.04 m over the last 24 hours

Measured 17 Oct 2026, 21:45 GMT+1 (45 min ago)

History

7 days

Water level Top of normal rangeBottom of normal range

What this means

Pontoon is at 1.05 m, within its typical range.

The usual range here runs from 0.36 m to 2.02 m.

It has dropped 0.04 m over the past 24 hours. In the last month it has stayed between 1.05 m and 1.11 m.

Lakes and reservoirs often sit lower in autumn after a summer of evaporation and use, and recover with the winter rain.

Compared with the normal range the agency publishes for this gauge. How to read levels

Key numbers

Normal range: 0.36 m – 2.02 m
Highest on record: 3.35 m

On the water at Pontoon

Normal levels mean few surprises on the water: ramps in use and the shoreline where you expect it.

Even in summer, lakes here are often colder than they look. Wear a life jacket on the water.

Weather at the gauge

Rain in the last 3 days: 16 mm.

17 Sat 12° 5° – Wind 12 km/h

18 Sun 12° 4° – Wind 14 km/h

19 Mon 12° 5° – Wind 20 km/h

20 Tue 13° 7° 16 mm, 76% Wind 30 km/h

21 Wed 10° 7° 1.7 mm, 62% Wind 23 km/h

22 Thu 11° 5° 3.9 mm, 81% Wind 15 km/h

23 Fri 10° 5° 1.6 mm, 88% Wind 24 km/h

Forecast: Open-Meteo

Sunrise 08:08 AM Sunset 06:37 PM Daylight 10 hr, 29 min First quarter 43%

Map

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
CorryoslaLake, L. Conn	0.94 m	Normal	+0.01 m	1.6 km
PollaghRiver gauge, Moy	1.92 m	Normal	−0.10 m	5.3 km
Mill Bridge ClydaghRiver gauge, Clydagh	0.38 m	Normal	−0.03 m	7.8 km
BallylahanRiver gauge, Moy	1.45 m	Normal	±0	8.2 km
TurloughLake, Castlebar	0.56 m	Normal	−0.01 m	10 km
ScarrownageeraghRiver gauge, Gweestion	0.97 m	Normal	−0.24 m	11 km
Gneeve BridgeRiver gauge, Manulla	1.72 m	Normal	+0.05 m	13 km
GortnarabyLake, L. Conn	1.65 m	Normal	±0	14 km

Questions and answers

What is the typical range for Pontoon?

The Office of Public Works (waterlevel.ie) gives a typical range of 0.36 m to 2.02 m for this gauge.

What is the water level of Pontoon today?

On 17 Oct 2026, 21:45 GMT+1, the water level was 1.05 m. Down 0.04 m over the last 24 hours.

Is Pontoon rising or falling?

Down 0.04 m over the last 24 hours.

Is the level of Pontoon normal?

Within the normal range. Compared with the normal range the agency publishes for this gauge.

What is the highest water level ever recorded at Pontoon?

The highest level on record is 3.35 m.

How often is this data updated?

The Office of Public Works (waterlevel.ie) publishes a new reading every 15 minutes. This page refreshes within minutes of each update.

Where does this data come from?

The values come directly from the Office of Public Works (waterlevel.ie), the official operator of this gauge, and are published under CC BY 4.0. We do not estimate or model live values.

For specialists

Station codes, datum, parameters, data quality and downloads

Operator: Office of Public Works (waterlevel.ie)
Station code: opw:34081 (Agency page)
Coordinates: 53.97767, -9.20808 (WGS84)
Vertical datum: OD Malin Head OSGM15
Gauge zero: 8.012 m
Update interval: every 15 minutes
Licence: CC BY 4.0. Contains Irish Public Sector Information licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) licence (source waterlevel.ie - provided by the Office of Public Works)

Published series

Parameter	Last value	Time (UTC)	Quality
Water level	1.05 m	2026-10-17 20:45	Provisional

Download

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<iframe src="https://nivelmap.com/embed/24073?lang=en" width="360" height="230" style="border:0;max-width:100%" loading="lazy" title="Pontoon water level"></iframe>

How to cite

Office of Public Works (waterlevel.ie): Pontoon (opw:34081). Accessed October 17, 2026 via Nivelmap, https://nivelmap.com/en/ireland/mayo/pontoon

How we check values

Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.

Readings are provisional, can be delayed or wrong and are not a flood warning. Read the disclaimer