Derryholmes u/s water level

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

River gauge, Shannon, Offaly, Ireland

Directions

Within the normal range

Water level

2.61m Up 0.03 m over the last 24 hours

Measured 17 Oct 2026, 05:00 GMT+1 (13 min ago)

History

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

What this means

The Shannon at Derryholmes u/s is at 2.61 m, within its typical range.

The usual range here runs from 2.36 m to 4.42 m.

It has risen 0.03 m over the past 24 hours. In the last month it has stayed between 2.56 m and 2.61 m.

Autumn rain usually starts to lift rivers again after the summer low.

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

Key numbers

Normal range: 2.36 m – 4.42 m
Highest on record: 5.06 m

Fishing and paddling

Paddlers and anglers can expect the river much as they know it, though a heavy shower upstream can change that within hours.

Flood alerts and warnings come from the OPW and Met Éireann.

Weather at the gauge

Rain in the last 3 days: 7.8 mm. Rain that falls upstream can take hours or days to show up at a river gauge.

17 Sat 12° 2° – Wind 8 km/h

18 Sun 12° 1° – Wind 6 km/h

19 Mon 13° 3° – Wind 12 km/h

20 Tue 14° 7° 0.8 mm, 40% Wind 23 km/h

21 Wed 10° 6° 22 mm, 46% Wind 35 km/h

22 Thu 11° 4° 2.1 mm, 50% Wind 19 km/h

23 Fri 8° 5° 23 mm, 83% Wind 37 km/h

Forecast: Open-Meteo

Sunrise 08:02 AM Sunset 06:34 PM Daylight 10 hr, 31 min First quarter 37%

Map

Other gauges on the Shannon

Gauge	Level	Compared with normal	24 hours	Distance
Derryholmes d/sRiver gauge, Shannon	2.55 m	Normal	+0.03 m	0.6 km
W.O.P.S Rail BridgeRiver gauge, Shannon	2.41 m	Normal	+0.02 m	3.5 km
ShannonbridgeRiver gauge, Shannon	2.53 m	Normal	+0.03 m	4.8 km
BanagherRiver gauge, Shannon	2.17 m	Normal	+0.02 m	6.0 km
Meelick WeirRiver gauge, Shannon	0.69 m	Normal	+0.02 m	9.5 km
AthloneRiver gauge, Shannon	2.60 m	Normal	+0.03 m	20 km
Athlone Weir U/SRiver gauge, Shannon	2.54 m	Normal	±0	20 km
Portumna BridgeRiver gauge, Shannon	1.41 m	Low	±0	22 km
CastleconnellRiver gauge, Shannon	0.51 m	No reference yet	±0	67 km
DrumsnaRiver gauge, Shannon	1.07 m	Normal	±0	75 km
JamestownRiver gauge, Shannon	1.99 m	Normal	±0	75 km
Jamestown Weir D/SRiver gauge, Shannon	0.97 m	Normal	+0.01 m	76 km

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
MoystownRiver gauge, Brosna	0.58 m	Normal	−0.02 m	4.7 km
Raherbeg Rail BridgeRiver gauge, Suck	1.95 m	Normal	±0	6.4 km
Victoria LockRiver gauge, Canal	2.03 m	Normal	+0.02 m	10 km
FerbaneRiver gauge, Brosna	1.01 m	Normal	−0.02 m	12 km
New Bridge Little BrosnaRiver gauge, Little Brosna	0.27 m	Normal	−0.01 m	13 km

Questions and answers

What is the typical range for the Shannon at Derryholmes u/s?

The Office of Public Works (waterlevel.ie) gives a typical range of 2.36 m to 4.42 m for this gauge.

Is the river level the same as the depth of the water?

No. The reading is measured from a fixed zero mark at the gauge, so 2.61 m on the gauge does not mean the water is that deep.

What is the water level of Derryholmes u/s today?

On 17 Oct 2026, 05:00 GMT+1, the water level was 2.61 m. Up 0.03 m over the last 24 hours.

Is Derryholmes u/s rising or falling?

Up 0.03 m over the last 24 hours.

Is the level of Derryholmes u/s 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 Derryholmes u/s?

The highest level on record is 5.06 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.

For specialists

Station codes, datum, parameters, data quality and downloads

Operator: Office of Public Works (waterlevel.ie)
Station code: opw:26351 (Agency page)
Coordinates: 53.24801, -8.00036 (WGS84)
Vertical datum: OD Malin Head OSGM15
Gauge zero: 30.108 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	2.61 m	2026-10-17 04:00	Provisional

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How to cite

Office of Public Works (waterlevel.ie): Derryholmes u/s (opw:26351). Accessed October 17, 2026 via Nivelmap, https://nivelmap.com/en/ireland/offaly/derryholmes-u-s

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