Test and Itchen catchment
• Longbridge • Hampshire • ID: E13363 • Level
(1h ago) • 4 readings/hr • 342 views
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⤴Unusual rise — FloodRadar+Top 1% rise rate for this gauge.
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You'll be notified when this gauge is rising more than 0.10 m/hr — a sign of rapidly increasing water levels.
You'll be notified when a new storm-overflow (sewage) discharge starts within ~3 km of this gauge, based on the water companies' near-real-time feeds.
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Not an emergency service — if in danger call 999. Alerts rely on
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Current Level
0.774 mASD
▬ Steady
24h Max
0.774 mASD
24h Min
0.754 mASD
Typical Range
0.90 - 1.55
mASD
Highest Recorded
1.77 mASD
EA official record
1.65 in our data (since Nov 2018)
Current level is 44% of this
🚽Sewage overflows nearby
Recent Water Levels
🌍 floodradar.co.uk
1 day
EA forecast (official)
Prediction V2
Prediction Eris
Nimbus beta
Experimental model fusing soil moisture, river flow, groundwater and catchment
character. The shaded band is its 10–90% range, widened so that about 80% of recent outcomes fall inside it.
Under evaluation — not yet promoted, so treat as a second opinion.
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.
10 storm overflows are traced upstream of this gauge, the nearest 3.4 km away along the river. 0 report discharging now, 10 report not discharging.
Southern Water · into Bartley Water (Tidal) · 5.2 km away in a straight line · discharges to the sea, an estuary or tidal water
12 spills · 70 hours in 2025
Not discharging now · last
1 more within 6 km whose connection is not known.
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 →
In a typical year this gauge reaches its typical high of 1.55 m
on about 5 days.
This year so far: 2 days.
20262 days so far
20252 days
202419 days
202314 days
20220 days
20210 days
20200 days
20190 days
20180 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 2012 for the 6 flood
areas linked to this gauge (nearest 0.5 km away).
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 Longbridge flood history.
Flood areas linked to this gauge
Flood warnings and alerts are issued for whole areas. These are the 6 areas linked to this gauge, nearest first.
Timing, not cause. Gauges can move together simply because the same rain fell on both.
Frequently asked questions
Is the River Test at Longbridge flooding today?
The current level is 0.77m, which is below the typical range. Flooding is very unlikely at this level.
Is the river level rising or falling at Longbridge?
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 Test at Longbridge?
The typical range at this station is 0.90m to 1.55m, based on Environment Agency historical data. Levels above 1.55m 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:
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