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0.08

Bridgham

Thet
Cam and Ely Ouse (Including South Level) catchment • Bridgham • Norfolk • ID: E22152 • Level
(29m ago) • 4 readings/hr • 147 views

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Current Level
0.079 mASD
▬ Steady
24h Max
0.079 mASD
24h Min
0.076 mASD
Typical Range
0.10 - 0.50
mASD
Highest Recorded
1.21 mASD
EA official record
0.55 in our data (since Feb 2025)
Current level is 7% of this
🚽 Sewage overflows nearby

Recent Water Levels

🌍 floodradar.co.uk
1 day

Recent Readings

Steady over 5h
08 Oct 20:00 ▬ steady 0.079 mASD
08 Oct 19:45 ▬ steady 0.079 mASD
08 Oct 19:30 ▬ steady 0.079 mASD
08 Oct 19:15 ▬ steady 0.079 mASD
08 Oct 19:00 ▬ steady 0.079 mASD
08 Oct 18:45 ▬ steady 0.079 mASD
08 Oct 18:30 ▲ +0.1 cm 0.079 mASD
08 Oct 18:15 ▬ steady 0.078 mASD
08 Oct 18:00 ▬ steady 0.078 mASD
08 Oct 17:45 ▬ steady 0.078 mASD
08 Oct 17:30 ▬ steady 0.078 mASD
08 Oct 17:15 ▬ steady 0.078 mASD
08 Oct 17:00 ▬ steady 0.078 mASD
08 Oct 16:45 ▬ steady 0.078 mASD
08 Oct 16:30 ▬ steady 0.078 mASD
08 Oct 16:15 ▬ steady 0.078 mASD
08 Oct 16:00 ▬ steady 0.078 mASD
08 Oct 15:45 ▬ steady 0.078 mASD
08 Oct 15:30 ▬ steady 0.078 mASD
08 Oct 15:15 0.078 mASD

Station Details

  • Monitoring Station: Bridgham
  • Watercourse: River Thet
  • Nearest Town: Bridgham
  • County: Norfolk
  • Coordinates: 52°25'57"N 0°52'37"E (52.432388, 0.877025)
  • Open in: Google Maps · Apple Maps (opens your maps app)
  • Date Opened: 6 Dec 1979
  • Status: Active
  • Station Type: River level station
Technical details: references, datum, range, flow archive
  • Station Reference: E22152
  • RLOI id: 6265 (the EA's check-for-flooding station id)
  • EA Gauge ID: E22152-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: Cam and Ely Ouse (Including South Level)
  • Typical Range: 0.100 – 0.503 mASD
  • Drainage Area: 278 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: 0.08 mASD (EA at 8 Oct 19:45)
  • 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 upstream

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.

4 storm overflows are traced upstream of this gauge, the nearest 17.8 km away along the river. 0 report discharging now, 4 report not discharging.

💧
Anglian Water · into Tributary River Thet · 17.8 km upstream along the river
0 spills · 0 hours in 2025
Not discharging now · last
💧
Anglian Water · into Tributary River Thet · 19.2 km upstream along the river
2 spills · 4 hours in 2025
Not discharging now · last
💧
Anglian Water · into Upper River Crouch · 21.1 km upstream along the river
0 spills · 0 hours in 2025
Not discharging now · last
Placed on the river by its position alone.
💧
Anglian Water · into Culverted Tributary R Thet · 21.1 km upstream along the river
1 spill · 0 hours in 2025
Not discharging now · last

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 River Whittle Nt · 5.9 km away in a straight line · its recorded watercourse is not the one mapped beside it
1 spill · 0 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 0.50 m on about 3 days. This year so far: 8 days.

2026 8 days so far
2025 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 2019 for the 2 flood areas linked to this gauge (nearest 1.3 km away).

5flood warnings 21flood alerts

Most recent flood warning: 22 Oct 2023 — River Thet at Shropham, East Harling and Shadwell

Year by year
YearWarningsAlerts
2024 0 5
2023 2 4
2022 0 1
2021 2 4
2020 1 5
2019 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 Bridgham 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

🌊 Groundwater-fed Slow and steady — fed largely by groundwater, so levels change gradually, not in sudden spikes.

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
0.68
groundwater-fed — slow & steady
Avg Annual Rainfall
661 mm/yr
1991–2020 · +3% since 1941–70
Urban Extent
1.3%
largely rural
Median Annual Flood
7.99 m³/s
QMED — typical yearly peak flow
Highest Daily Mean Flow
18.94 m³/s
26 Dec 2020 · daily mean, not the instantaneous peak
Flow-Duration Curve
mean 1.714.871.160.3695% (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 12%Grassland 29%Arable 53%Urban 5%
Arable 67% → 53% since 1990

Flow affected by: groundwater abstraction, effluent returns, 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

Crump weir gauging a Chalk rural catchment with some artificial influences, station reconstructed in 1979.

More detail

The catchment

Chalk with large Boulder Clay cover. Rural catchment, arable with some forest and grassland, several small towns.

The station

Crump profile weir, 6m broad. Prior to Oct 1979, broad-crested weir (crest: 7.4m), situated under double-arch bridge.

How it measures flow

Two peak flow ratings applied across period of record, the most recent is valid from October-1979. Current rating only reliable to bankfull. Dredging increased modular limit. Theoretical rating for original weir confirmed by c/m measurements. Part of the Thet-Little Ouse groundwater support scheme, which triggers at 350 l/s to maintain flow. These trigger flows apply when the scheme is being used as a river support scheme for water users (not for Ely Ouse to Essex Transfer Scheme). The amount pumped in any one season is initially limited to 3 per cent of the annual licenced quantity of the Thet-Little Ouse scheme.

Flow regime

Regime influenced by groundwater abstraction/recharge. Abstractions for industry and agriculture. Some effluent returns.

The flow record

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
Crump weir
Operating since
1973
Station datum
14.8 mAOD
Flow record
1967–2024 · 57 yrs · 100% complete
Peak-flow record
since 1697
Hydrometric area
33
Measured by
Environment Agency

Frequently asked questions

Is the River Thet at Bridgham flooding today?

The current level is 0.08m, which is below the typical range. Flooding is very unlikely at this level.

Is the river level rising or falling at Bridgham?

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 Thet at Bridgham?

The typical range at this station is 0.10m to 0.50m, based on Environment Agency historical data. Levels above 0.50m 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 →