Corryosla water level

Name: Corryosla 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. Conn, Mayo, Ireland

Directions

Within the normal range

Water level

0.94m

Measured Oct 17, 2026, 12:30 AM GMT+1 (23 min ago)

History

Not enough readings for a chart yet. History builds up with every update.

What this means

Nothing unusual at Corryosla right now: the water level of 0.94 m is within its typical range.

The usual range here runs from 0.22 m to 1.97 m.

Over the past 30 days it has moved between 0.93 m and 0.94 m.

Many reservoirs reach their low point of the year in autumn, before winter rain and snow start the refill.

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

Key numbers

Normal range: 0.22 m – 1.97 m
Highest on record: 3.19 m

Swimming and boating at Corryosla

At a normal level, ramps and marinas generally run as usual, and fishing tends to follow the season more than the water level.

Cold water is the biggest risk for paddlers and swimmers, more than the level itself.

Weather at the gauge

Rain in the last 3 days: 22 mm.

16 Fri 12° 7° 0.1 mm, 73 % Wind 19 km/h

17 Sat 12° 6° – Wind 10 km/h

18 Sun 12° 5° – Wind 14 km/h

19 Mon 11° 7° – Wind 15 km/h

20 Tue 13° 8° 2.0 mm, 55 % Wind 25 km/h

21 Wed 10° 7° 13 mm, 57 % Wind 36 km/h

22 Thu 10° 5° 3.0 mm, 76 % Wind 17 km/h

Forecast: Open-Meteo

Sunrise 08:07 AM Sunset 06:40 PM Daylight 10h 33m First quarter 35 %

Map

Other gauges on the L. Conn

Gauge	Level	Compared with normal	24 hours	Distance
GortnarabyLake, L. Conn	1.65 m	Normal		13 km

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
PontoonLake, L. Cullin	1.09 m	Normal		1.6 km
PollaghRiver gauge, Moy	2.00 m	Normal		6.8 km
Mill Bridge ClydaghRiver gauge, Clydagh	0.40 m	Normal		9.0 km
BallylahanRiver gauge, Moy	1.45 m	Normal	0.00 m	9.7 km
TurloughLake, Castlebar	0.57 m	Normal		11 km
Mullenmore SpringRiver gauge, Deel (Crossmolina)	0.57 m	Normal		13 km
ScarrownageeraghRiver gauge, Gweestion	1.19 m	Normal		13 km
Crossmolina Weir D/SRiver gauge, Deel (Crossmolina)	1.24 m	Normal		14 km

Questions and answers

What is the record level at Corryosla?

The highest reading on record is 3.19 m.

How often is Corryosla updated?

Several times an hour. New readings from Office of Public Works (waterlevel.ie) appear here as they arrive. Latest: Oct 17, 2026, 12:30 AM GMT+1.

What is the water level of Corryosla today?

On Oct 17, 2026, 12:30 AM GMT+1, the water level was 0.94 m. Normal.

Is the level of Corryosla 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 Corryosla?

The highest level on record is 3.19 m on –.

How often is this data updated?

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 Office of Public Works (waterlevel.ie), the official operator of this gauge, and are published under the 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:34083 (Agency page)
Coordinates: 53.98539, -9.22789 (WGS84)
Vertical datum: OD Malin Head OSGM15
Gauge zero: 8.138 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 `stage`	0.94 m	2026-10-16 23:30	Provisional

Download

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How to cite

Office of Public Works (waterlevel.ie): Corryosla (opw:34083). Accessed October 16, 2026 via Nivelmap, https://nivelmap.com/en/ireland/mayo/corryosla

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