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0.10

Glemsford

Glem
Essex catchment • Stanstead • Suffolk • ID: E22548 • Level
(31m ago) • 4 readings/hr • 140 views

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Current Level
0.101 mASD
▬ Steady
24h Max
0.102 mASD
24h Min
0.097 mASD
Typical Range
0.06 - 1.04
mASD
Highest Recorded
1.88 mASD
EA official record
1.88 in our data (since Oct 1979)
Current level is 5% of this
🚽 Sewage overflows nearby

Recent Water Levels

🌍 floodradar.co.uk
1 day

Recent Readings

Steady over 5h
09 Oct 19:15 ▬ steady 0.101 mASD
09 Oct 19:00 ▬ steady 0.102 mASD
09 Oct 18:45 ▬ steady 0.102 mASD
09 Oct 18:30 ▬ steady 0.101 mASD
09 Oct 18:15 ▬ steady 0.101 mASD
09 Oct 18:00 ▬ steady 0.101 mASD
09 Oct 17:45 ▬ steady 0.102 mASD
09 Oct 17:30 ▬ steady 0.102 mASD
09 Oct 17:15 ▬ steady 0.102 mASD
09 Oct 17:00 ▬ steady 0.102 mASD
09 Oct 16:45 ▬ steady 0.102 mASD
09 Oct 16:30 ▬ steady 0.101 mASD
09 Oct 16:15 ▬ steady 0.101 mASD
09 Oct 16:00 ▬ steady 0.101 mASD
09 Oct 15:45 ▲ +0.1 cm 0.101 mASD
09 Oct 15:30 ▼ -0.1 cm 0.100 mASD
09 Oct 15:15 ▬ steady 0.101 mASD
09 Oct 15:00 ▬ steady 0.101 mASD
09 Oct 14:45 ▲ +0.1 cm 0.101 mASD
09 Oct 14:30 0.100 mASD

Station Details

  • Monitoring Station: Glemsford
  • Watercourse: River Glem
  • Nearest Town: Stanstead
  • County: Suffolk
  • Coordinates: 52°5'35"N 0°41'36"E (52.093080, 0.693213)
  • Open in: Google Maps · Apple Maps (opens your maps app)
  • Date Opened: 1 Oct 1979
  • Status: Active
  • Station Type: River level station
Technical details: references, datum, range, flow archive
  • Station Reference: E22548
  • RLOI id: 6135 (the EA's check-for-flooding station id)
  • EA Gauge ID: E22548-level-stage-i-15_min-mASD
  • Parameter: Level
  • Unit: mASD
  • Typical rise rate: 1 cm/hr (p95 sustained over 90 days)
  • Typical data delay: ~22 min (measured reading→publication lag)
  • Tidal: No
  • Lock / structure: No
  • Catchment Area: Essex
  • Typical Range: 0.063 – 1.040 mASD
  • Drainage Area: 87 km² upstream of this gauge
  • Flow Data: Daily mean flow (m³/s) to 7 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: 0.10 mASD (EA at 9 Oct 19:15)
  • 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

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.

3 storm overflows are traced upstream of this gauge, the nearest 3.4 km away along the river. 0 report discharging now, 3 report not discharging.

💧
Anglian Water · into River Glem · 3.4 km upstream along the river
4 spills · 43 hours in 2025
Not discharging now · last
💧
Anglian Water · into Glem - Lower · 5.7 km upstream along the river
3 spills · 40 hours in 2025
Not discharging now · last
💧
Anglian Water · into Trib Of River Glem · 18.3 km upstream along the river
0 spills · 0 hours in 2025
Not discharging now

Nearby, connection not known

Within 6 km in a straight line, but the river map cannot say whether their water passes this gauge.

💧
Anglian Water · into Unnamed Trib River Stour · 1.8 km away in a straight line · no mapped watercourse close enough to be sure
4 spills · 8 hours in 2025
Not discharging now · last

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 1.04 m on about 3 days. This year so far: 3 days.

2026 3 days so far
2025 1 day
2024 7 days
2023 4 days patchy data
2022 0 days
2021 7 days
2020 3 days
2019 2 days
2018 1 day patchy data
2017 0 days patchy data

Counted from each day's highest reading. Days with missing or implausible readings are left out, so a year marked patchy may have run high more often than shown.

Flood history near this gauge

Official Environment Agency warnings issued since 2007 for the 2 flood areas linked to this gauge (nearest 5.5 km away).

2flood warnings 59flood alerts

Most recent flood warning: 20 Oct 2023 — The River Stour from downstream of Kedington to Sudbury

Year by year
YearWarningsAlerts
2026 0 2
2025 0 2
2024 0 7
2023 2 6
2022 0 7
2021 0 7
2020 0 6
2019 0 2
2018 0 1
2016 0 2
2015 0 1
2014 0 4
2013 0 1
2012 0 5
2010 0 1
2009 0 1
2008 0 2
2007 0 2

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 Stanstead flood history.

Flood areas linked to this gauge

Flood warnings and alerts are issued for whole areas. These are the 2 areas linked to this gauge, nearest first.

Catchment Character

🌊 Fairly flashy Responds fairly quickly to rain, with moderate baseflow between events.

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
632 mm/yr
1991–2020 · +2% since 1941–70
Urban Extent
0.8%
largely rural
Median Annual Flood
8.21 m³/s
QMED — typical yearly peak flow
Highest Daily Mean Flow
24.10 m³/s
16 Sep 1968 · daily mean, not the instantaneous peak
Flow-Duration Curve
mean 0.4861.900.1870.0725% (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 5%Grassland 24%Arable 68%Urban 3%
Arable 84% → 68% since 1990

Flow affected by: groundwater abstraction, industrial / agricultural abstraction.

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

Trapezoidal flume gauging a gw-influenced, rural catchment, bypassing at high flows and with problematic rating.

More detail

The catchment

Rural catchment of the Upper Stour. Upper Chalk (exposed in river valley sides) is overlain by glacial sand and gravel and semi-pervious Boulder Clay. Rural, predominantly arable land.

The station

Trapezoidal flume.

How it measures flow

Bypassing at high flows, occasional problems with weed growth. Modest modular limit, but downstream level recorder can allow for drowning. Flow appears to go non-modular around 0.75m, but drowning may be variable, caused at least in part by the Stour downstream. Gaugings above 1m are float runs and do not account for bypassing. Highest floods unreliably gauged. From Oct 1969, the rating applied allows for average drowning conditions. Two peak flow ratings applied across period of record, derived from a combination of theory and hydraulic modelling. Affected by Cranmore Green borehole pumping, e.g. elevated flows 05-07-18 to 30-07-18.

Flow regime

Gw-influenced regime. Runoff reduced by industrial/agricultural abstraction.

The flow record

No POT data are presented for this station as they have no non-modular flow correction applied. AMAX data have been corrected, but in some cases can be below the daily flow as these are not corrected. Naturalised flows from 1960 to Sep 1976. Exceptional minimum in Oct 1997 follows cessation of augmentation (via Cranmore Green outfall) in Sept 1997. Flow during summer 2017, 2018, 2019 and 2022 affected by Cranmore Green augementation borehole, hence abrupt high values. GDF POR reprocessed in 2014. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).

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
Flume
Operating since
1960
Station datum
33.6 mAOD
Flow record
1960–2024 · 64 yrs · 99% complete
Peak-flow record
since 1961
Hydrometric area
36
Measured by
Environment Agency

Frequently asked questions

Is the River Glem at Glemsford flooding today?

The current level is 0.10m, which is within the typical range of 0.06 to 1.04m. Flooding is unlikely at this level.

Is the river level rising or falling at Glemsford?

Based on the most recent readings, the level is currently steady. 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 Glem at Glemsford?

The typical range at this station is 0.06m to 1.04m, based on Environment Agency historical data. Levels above 1.04m 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 →