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0.31

Allbrook weir

Itchen ⚙ Structure
Test and Itchen catchment • Colden Common • Hampshire • ID: E12430 • Level
(33m ago) • 4 readings/hr • 182 views

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Not an emergency service — if in danger call 999. Alerts rely on EA/SEPA/NRW data and are best-efforts. Terms

Current Level
0.308 mASD
▬ Steady
24h Max
0.308 mASD
24h Min
0.308 mASD
Typical Range
0.16 - 0.53
mASD
Highest Recorded
0.66 mASD
EA official record
0.71 in our data (since Nov 2012)
Current level is 47% of this
🚽 Sewage overflows nearby

Recent Water Levels

🌍 floodradar.co.uk
1 day

Flood predictions aren't generated for lock / structure gauges — their levels are driven by gate operation, not by catchment rainfall, so the forecast models would have no skill here.

Recent Readings

Steady over 5h
09 Oct 22:30 ▬ steady 0.308 mASD
09 Oct 22:15 ▬ steady 0.308 mASD
09 Oct 22:00 ▬ steady 0.308 mASD
09 Oct 21:45 ▬ steady 0.308 mASD
09 Oct 21:30 ▬ steady 0.308 mASD
09 Oct 21:15 ▬ steady 0.308 mASD
09 Oct 21:00 ▬ steady 0.308 mASD
09 Oct 20:45 ▬ steady 0.308 mASD
09 Oct 20:30 ▬ steady 0.308 mASD
09 Oct 20:15 ▬ steady 0.308 mASD
09 Oct 20:00 ▬ steady 0.308 mASD
09 Oct 19:45 ▬ steady 0.308 mASD
09 Oct 19:30 ▬ steady 0.308 mASD
09 Oct 19:15 ▬ steady 0.308 mASD
09 Oct 19:00 ▬ steady 0.308 mASD
09 Oct 18:45 ▬ steady 0.308 mASD
09 Oct 18:30 ▬ steady 0.308 mASD
09 Oct 18:15 ▬ steady 0.308 mASD
09 Oct 18:00 ▬ steady 0.308 mASD
09 Oct 17:30 0.308 mASD

Station Details

  • Monitoring Station: Allbrook weir
  • Watercourse: River Itchen
  • Nearest Town: Colden Common
  • County: Hampshire
  • Coordinates: 50°59'15"N 1°20'39"W (50.987637, -1.344150)
  • Open in: Google Maps · Apple Maps (opens your maps app)
  • Date Opened: 1 Jan 1975
  • Status: Active
  • Station Type: River level station
Technical details: references, datum, range, flow archive
  • Station Reference: E12430
  • RLOI id: 1048 (the EA's check-for-flooding station id)
  • EA Gauge ID: E12430-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: ⚙ Yes — lock, weir, sluice or pump
  • Catchment Area: Test and Itchen
  • Datum: 17.150m AOD
  • Typical Range: 0.164 – 0.529 mASD
  • EA Cross-check: 0.31 mASD (EA at 9 Oct 22:15)

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

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. 0 report discharging now, 1 reports not discharging.

💧
Southern Water · into The River Itchen · upstream (distance along the river not measured)
4 spills · 32 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.

💧
Southern Water · into River Itchen · 2.9 km away in a straight line · no mapped watercourse close enough to be sure
0 spills · 0 hours in 2025
No live feed for this overflow
💧
Southern Water · into Monks Brook Via Drain · 3.9 km away in a straight line · reaches the river through a sewer or culvert
6 spills · 41 hours in 2025
Not discharging now · last
💧
Southern Water · into Unnamed Trib Of River Itchen · 5.1 km away in a straight line · its watercourse is not on the river map
6 spills · 29 hours in 2025
Not discharging now · last
💧
Southern Water · into Tributary Of River Itchen · 5.2 km away in a straight line · its watercourse is not on the river map
11 spills · 93 hours in 2025
Not discharging now · last
💧
Southern Water · into Saline Estuary · 5.5 km away in a straight line · discharges to the sea, an estuary or tidal water
0 spills · 0 hours in 2025
Status unknown — the live feed has not updated for 144 d 10 h
💧
Southern Water · into Saline Estuary · 5.6 km away in a straight line · discharges to the sea, an estuary or tidal water
2 spills · 0 hours in 2025
Not discharging now · last
💧
Southern Water · into Saline Estuary · 5.6 km away in a straight line · discharges to the sea, an estuary or tidal water
0 spills · 0 hours in 2025
Status unknown — the live feed has not updated for 144 d 10 h

5 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 0.53 m on about 16 days. This year so far: 45 days.

2026 45 days so far
2025 6 days
2024 44 days
2023 8 days
2022 0 days
2021 0 days
2020 60 days
2019 5 days
2018 19 days
2017 3 days

Counted from each day's highest reading. Days with missing or implausible readings are left out. The darker part is days above 0.68 m, the level this gauge tops only a few days a year.

Flood history near this gauge

Official Environment Agency warnings issued since 2012 for the 10 flood areas linked to this gauge (nearest 0.9 km away).

63flood warnings 307flood alerts

Most recent flood warning: 16 Feb 2026 — Mansbridge and Woodmill on the River Itchen

Year by year
YearWarningsAlerts
2026 4 28
2025 2 23
2024 10 83
2023 13 30
2022 0 8
2021 0 17
2020 5 48
2019 0 15
2018 0 4
2017 0 1
2016 0 4
2015 0 1
2014 28 36
2013 1 6
2012 0 3

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 Colden Common flood history.

Flood areas linked to this gauge

Flood warnings and alerts are issued for whole areas. These are the 10 areas linked to this gauge, nearest first.

Show 2 more

Frequently asked questions

Is the River Itchen at Allbrook weir flooding today?

The current level is 0.31m, which is within the typical range of 0.16 to 0.53m. Flooding is unlikely at this level.

Is the river level rising or falling at Allbrook weir?

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 Itchen at Allbrook weir?

The typical range at this station is 0.16m to 0.53m, based on Environment Agency historical data. Levels above 0.53m 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.

Embed this gauge on your website

Free live river-level widget — ideal for parish councils, angling clubs and local sites. Updates automatically.

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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 →