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Water Level Easing
Easing — down from 0.61 at 20:15, now 0.59
0.59

Threlkeld

Glenderamackin
Derwent West Cumbria and Duddon catchment • Threlkeld • Cumberland • ID: 750504 • Level
(32m ago) • 4 readings/hr • 161 views

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Current Level
0.585 m
▼ Easing
24h Max
0.657 m
24h Min
0.585 m
Typical Range
0.50 - 2.00
m
Highest Recorded
2.57 m
EA official record
2.56 in our data (since Jan 1976)
Current level is 23% of this
🚽 Sewage overflows nearby

Recent Water Levels

🌍 floodradar.co.uk
1 day

Recent Readings

Falling · -1 cm over 5h
08 Oct 05:15 ▼ -0.1 cm 0.585 m
08 Oct 05:00 ▬ steady 0.586 m
08 Oct 04:45 ▼ -0.1 cm 0.586 m
08 Oct 04:30 ▼ -0.1 cm 0.587 m
08 Oct 04:00 ▼ -0.1 cm 0.588 m
08 Oct 03:45 ▬ steady 0.589 m
08 Oct 03:30 ▼ -0.1 cm 0.589 m
08 Oct 03:15 ▬ steady 0.590 m
08 Oct 03:00 ▬ steady 0.590 m
08 Oct 02:45 ▼ -0.1 cm 0.590 m
08 Oct 02:30 ▬ steady 0.591 m
08 Oct 02:15 ▼ -0.1 cm 0.591 m
08 Oct 02:00 ▼ -0.1 cm 0.592 m
08 Oct 01:45 ▬ steady 0.593 m
08 Oct 01:30 ▼ -0.1 cm 0.593 m
08 Oct 01:15 ▬ steady 0.594 m
08 Oct 01:00 ▼ -0.2 cm 0.594 m
08 Oct 00:45 ▬ steady 0.596 m
08 Oct 00:30 ▼ -0.1 cm 0.596 m
08 Oct 00:15 0.597 m

Station Details

Technical details: references, datum, range, flow archive
  • Station Reference: 750504
  • RLOI id: 5140 (the EA's check-for-flooding station id)
  • EA Gauge ID: 750504-level-stage-i-15_min-m
  • Parameter: Level
  • Unit: m
  • Typical rise rate: 5 cm/hr (p95 sustained over 90 days)
  • Typical data delay: ~22 min (measured reading→publication lag)
  • Tidal: No
  • Lock / structure: No
  • Catchment Area: Derwent West Cumbria and Duddon
  • Typical Range: 0.500 – 2.000 m
  • Drainage Area: 65 km² upstream of this gauge
  • Flow Data: Daily mean flow (m³/s) to 6 Oct (2 days behind — the EA publishes each day's mean a day or two after it ends; unchecked, provisional) via EA Hydrology
  • EA Cross-check: 0.59 m (EA at 8 Oct 05:15)
  • Flow Archive: National River Flow Archive ↗

Geographic coordinates may reflect the access point for the gauge, and not the precise location in the watercourse that it is taking readings from.

Nearby Stations

Gauges connected to this river, and others nearby. A distance “by river” follows the river on the map; any other is in a straight line.

Connected downstream

Same river system, separate branch

Nearby

Distances by river: OS Open Rivers. Contains OS data © Crown copyright and database rights 2026.

💧 Storm overflows upstream of this gauge

Storm overflows whose water reaches this gauge on the mapped river network, nearest first by distance along the river. The status is each water company's monitor: it says whether an overflow is discharging, not how much or what it contains.

1 storm overflow is traced upstream of this gauge, the nearest 820 m away along the river. 0 report discharging now, 1 reports not discharging.

💧
United Utilities · into Gategill Beck · 820 m upstream along the river
53 spills · 104 hours in 2025
Not discharging now · last

3 other overflows within 6 km are downstream of this gauge or on another branch of the river network, so they are not listed.

These are the water companies' monitor statuses; a spill does not by itself explain a change in the gauge level. River connections and distances are traced on OS Open Rivers (edition 2026-04), which leaves out many small channels. Explore the sewage map →

Contains OS data © Crown copyright and database rights 2026.

Rainfall & Weather

Loading rainfall and weather data...

How often this river runs high

In a typical year this gauge reaches its typical high of 2.00 m on about 2 days. This year so far: 0 days.

2026 0 days so far
2025 1 day
2024 1 day
2023 4 days
2022 2 days
2021 2 days
2020 5 days
2019 3 days
2018 1 day
2017 3 days

Counted from each day's highest reading. Days with missing or implausible readings are left out.

Flood history near this gauge

Official Environment Agency warnings issued since 2008 for the 15 flood areas linked to this gauge (nearest 4.3 km away).

11severe warnings 207flood warnings 355flood alerts

Most recent flood warning: 28 Feb 2026 — Keswick Campsite

Year by year
YearSevereWarningsAlerts
2026 0 4 24
2025 0 10 20
2024 0 9 20
2023 0 15 17
2022 0 8 14
2021 0 13 17
2020 0 22 15
2019 0 14 20
2018 0 6 10
2017 0 10 21
2016 0 6 16
2015 11 27 24
2014 0 7 13
2013 0 5 16
2012 0 8 20
2011 0 9 16
2010 0 8 14
2009 0 15 24
2008 0 11 34

Warnings apply to a whole flood area, not necessarily this exact spot. Years before 2006 aren't covered by the EA's historic record. See also the Threlkeld flood history.

Flood areas linked to this gauge

Flood warnings and alerts are issued for whole areas. These are the 15 areas linked to this gauge, nearest first.

Show 7 more

Catchment Character

🌊 Steep & flashy Steep catchment sheds rain quickly — expect fast, sharp rises after heavy rain.

Your catchment is all the land that drains rainfall into the river above this gauge. Its character — how steep, wet, wooded, urban or chalky that land is — decides how fast rain here turns into a rising river. A steep, bare or clay catchment is “flashy” (rises and falls quickly, floods easily); a flat, chalk or well-wooded one is slow and steady. The tiles below put numbers to that; the flow-duration curve reads left-to-right from the river’s typical high flows (Q5) down to its low flows (Q95) — a steep curve means a flashy river.

The physical character of the land that drains to this gauge, and how it shapes its flood response — from the National River Flow Archive (UKCEH).

Baseflow Index
0.40
mixed response
Avg Annual Rainfall
1,903 mm/yr
1991–2020 · +4% since 1941–70
Urban Extent
0.1%
largely rural
Median Annual Flood
66.19 m³/s
QMED — typical yearly peak flow
Highest Daily Mean Flow
106 m³/s
5 Dec 2015 · daily mean, not the instantaneous peak
Flow-Duration Curve
mean 2.7010.231.220.2105% (high)% of days exceeded95% (low)
Daily flow (m³/s) exceeded each % of the time — a steep curve is flashy, a flat one is steady. Q5 high · Q50 median · Q95 low.
Land Cover (2023)
Woodland 8%Grassland 78%Arable 1%Heath/scrub 13%Urban 1%
Grassland 88% → 78% since 1990

Photos

Gauging-station photographs from the National River Flow Archive (UKCEH).

Photos © NRFA / UKCEH & the measuring authority — shown at web resolution. Full gallery on the NRFA ↗

About this gauge

Non-standard shallow V weir gauging a natural, high relief catchment in the northern Lake District. Flow record contains large gaps.

More detail

The catchment

High relief, natural catchment in northern Lake District; broad main valley below 200m, flanking fells exceed 700m. Geology principally Skiddaw Slates, with Borrowdale volcanics on southern watershed and granite boss in the south. Extensive Boulder Clay overlies the geology with alluvium within the river valley and peat on upland reaches. Land-use rural and moorland.

The station

Opened April 1969 as a velocity-area station with gabion basket low flow control which was prone to erosion and drowning. A non-standard 13m wide weir was built in 1986. Non-standard shallow V concrete weir was constructed 1998, reduced by 0.2m in 2008.

How it measures flow

Significant bypass flow on the right-bank floodplain from around 2.2m. Weir drowned at higher flows. Cableway present to measure in bank flows. Three peak flow ratings applied across period of record, the pre-1998 rating is a consolidation of multiple early ratings, the most recent is valid from July 2008 after lowering of weir. Top-end ratings are from hydraulic models.

Flow regime

No known artificial influences on flow regime.

The flow record

Station closed Jun 1981-Jan 1986, data quality poor pre-closure. Large gaps are present in the daily flow series. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).

Descriptions from the National River Flow Archive (UKCEH). NRFA station record ↗

Gauge Details

How this gauging station is built and how long it has measured (NRFA / UKCEH).

Gauge type
Gauging structure
Operating since
1969
Station datum
136.3 mAOD
Flow record
1969–2024 · 55 yrs · 85% complete
Peak-flow record
since 1969
Hydrometric area
75
Measured by
Environment Agency

Frequently asked questions

Is the River Glenderamackin at Threlkeld flooding today?

The current level is 0.59m, which is within the typical range of 0.50 to 2.00m. Flooding is unlikely at this level.

Is the river level rising or falling at Threlkeld?

Based on the most recent readings, the level is currently falling slightly. The chart above shows the last 12 hours of measurements by default (up to 7 days), updated roughly every 15 minutes.

What is a normal level for the River Glenderamackin at Threlkeld?

The typical range at this station is 0.50m to 2.00m, based on Environment Agency historical data. Levels above 2.00m are higher than usually seen and may indicate a flood risk.

How often is this river level data updated?

Readings are supplied by the Environment Agency gauge. FloodRadar checks for updates roughly every 15 minutes; the timestamp above shows how recent the latest available reading is.

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📮 Flood risk by postcode near this gauge

Postcodes within 5 km with properties in the Environment Agency’s rivers-and-sea flood-risk bands:

Check any UK postcode’s flood risk →

🏠 Buying or renting around here? Get the Property Flood-Risk Report for any English postcode — official risk band, recorded floods, warning history, river behaviour and nearby storm overflows. £19 one-off. Learn more →