Thirlmere Reservoir (Spillway level = 16.55m) water level

Name: Thirlmere Reservoir (Spillway level = 16.55m) water level (Environment Agency)
Creator: Environment Agency
License: https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/

River gauge, Thirlmere Reservoir, Cumbria, United Kingdom

Directions

Within the normal range

Water level

10.80m Down 0.04 m over the last 24 hours

Measured 20 Oct 2026, 20:30 BST (42 min ago)

History

7 days 30 days

Water level Top of normal rangeBottom of normal range

What this means

The gauge at Thirlmere Reservoir (Spillway level = 16.55m) reads 10.80 m, a normal level.

The usual range here runs from 10.09 m to 16.68 m.

The level is falling, down 0.04 m over the past 24 hours. Over the past 30 days it has moved between 9.96 m and 10.97 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: 10.09 m – 16.68 m
Lowest and highest in 30 days: 9.96 m – 10.97 m
Lowest and highest in 12 months: 9.99 m – 10.96 m
Highest on record: 18.04 mDecember 5, 2015
Lowest on record: 6.90 mNovember 1, 2003

On the river at Thirlmere Reservoir (Spillway level = 16.55m)

A level in the typical range is usually good news for both anglers and canoeists, but conditions can change quickly after rain in the hills.

Flood warnings for the area come from the Environment Agency.

Weather at the gauge

No rain in the last 3 days.

20 Tue 12° 9° 12 mm, 100% Wind 13 km/h

21 Wed 11° 7° 3.2 mm, 98% Wind 19 km/h

22 Thu 10° 3° 1.7 mm, 45% Wind 13 km/h

23 Fri 10° 5° 23 mm, 99% Wind 23 km/h

24 Sat 12° 6° 16 mm, 90% Wind 34 km/h

25 Sun 9° 7° 4.3 mm, 96% Wind 36 km/h

26 Mon 15° 8° 13 mm, 89% Wind 37 km/h

Forecast: Open-Meteo

Sunrise 07:51 AM Sunset 06:05 PM Daylight 10 hr, 14 min Waxing gibbous 71%

Map

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
ThirlmereRiver gauge, St Johns Beck	0.16 m	Low	±0	0.6 km
LodoreRiver gauge, Derwentwater	1.01 m	Normal	−0.06 m	4.5 km
Riddings WoodRiver gauge, River Greta	1.29 m	Normal	+0.01 m	5.7 km
ThrelkeldRiver gauge, River Glenderamackin	0.59 m	Normal	+0.01 m	5.9 km
Greta BridgeRiver gauge, River Greta	1.15 m	Normal	±0	6.7 km
Keswick CampsiteRiver gauge, River Greta	0.71 m	Normal	−0.03 m	6.8 km
PortinscaleRiver gauge, River Derwent	0.68 m	Normal	−0.03 m	7.5 km
Glenridding VillageRiver gauge, Glenridding Beck	0.21 m	Normal	+0.02 m	7.9 km

Questions and answers

What is the typical range for Thirlmere Reservoir (Spillway level = 16.55m)?

The Environment Agency gives a typical range of 10.09 m to 16.68 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 10.80 m on the gauge does not mean the water is that deep.

What is the water level of Thirlmere Reservoir (Spillway level = 16.55m) today?

On 20 Oct 2026, 20:30 BST, the water level was 10.80 m. Down 0.04 m over the last 24 hours.

Is Thirlmere Reservoir (Spillway level = 16.55m) rising or falling?

Down 0.04 m over the last 24 hours. Up 0.05 m over the last 7 days.

Is the level of Thirlmere Reservoir (Spillway level = 16.55m) 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 Thirlmere Reservoir (Spillway level = 16.55m)?

The highest level on record is 18.04 m on December 5, 2015. The lowest is 6.90 m on November 1, 2003.

How often is this data updated?

The Environment Agency 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: Environment Agency
Station code: ea:750604 (Agency page)
Coordinates: 54.56166, -3.06880 (WGS84)
Vertical datum: station datum
Update interval: every 15 minutes
Licence: Open Government Licence v3.0. Contains Environment Agency data licensed under the Open Government Licence v3.0

Published series

Parameter	Last value	Time (UTC)	Quality
Water level	10.80 m	2026-10-20 19:30	Provisional

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How to cite

Environment Agency: Thirlmere Reservoir (Spillway level = 16.55m) (ea:750604). Accessed October 20, 2026 via Nivelmap, https://nivelmap.com/en/united-kingdom/cumbria/thirlmere-reservoir-spillway-level-16-55m

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