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0.03

Whitchurch Main

Test
Test and Itchen catchment • Whitchurch • Hampshire • ID: 3422SO • Level
(34m ago) • 4 readings/hr • 135 views

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Current Level
0.026 mASD
▬ Steady
24h Max
0.058 mASD
24h Min
0.026 mASD
Typical Range
0.02 - 0.35
mASD
Highest Recorded
0.41 mASD
EA official record
0.37 in our data (since Mar 2018)
Current level is 6% of this
🚽 Sewage overflows nearby

Recent Water Levels

🌍 floodradar.co.uk
1 day

Recent Readings

Falling · -0.3 cm over 5h
10 Oct 09:45 ▼ -0.1 cm 0.026 mASD
10 Oct 09:30 ▬ steady 0.027 mASD
10 Oct 09:15 ▬ steady 0.027 mASD
10 Oct 09:00 ▬ steady 0.027 mASD
10 Oct 08:45 ▲ +0.1 cm 0.027 mASD
10 Oct 08:30 ▼ -0.1 cm 0.026 mASD
10 Oct 08:15 ▬ steady 0.027 mASD
10 Oct 07:45 ▬ steady 0.027 mASD
10 Oct 07:30 ▬ steady 0.027 mASD
10 Oct 07:15 ▼ -0.1 cm 0.027 mASD
10 Oct 07:00 ▬ steady 0.028 mASD
10 Oct 06:45 ▬ steady 0.028 mASD
10 Oct 06:30 ▬ steady 0.028 mASD
10 Oct 06:15 ▬ steady 0.028 mASD
10 Oct 06:00 ▬ steady 0.028 mASD
10 Oct 05:45 ▬ steady 0.028 mASD
10 Oct 05:30 ▬ steady 0.028 mASD
10 Oct 05:15 ▼ -0.1 cm 0.028 mASD
10 Oct 05:00 ▬ steady 0.029 mASD
10 Oct 04:45 0.029 mASD

Station Details

  • Monitoring Station: Whitchurch Main
  • Watercourse: River Test
  • Nearest Town: Whitchurch
  • County: Hampshire
  • Coordinates: 51°13'41"N 1°20'18"W (51.228190, -1.338347)
  • Open in: Google Maps · Apple Maps (opens your maps app)
  • Date Opened: 1 Oct 2001
  • Status: Active
  • Station Type: River level station
Technical details: references, datum, range, flow archive
  • Station Reference: 3422SO
  • RLOI id: 9229 (the EA's check-for-flooding station id)
  • EA Gauge ID: 3422SO-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: Test and Itchen
  • Typical Range: 0.020 – 0.350 mASD
  • EA Cross-check: 0.03 mASD (EA at 10 Oct 09:45)

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

None of the storm overflows FloodRadar holds is traced upstream of this gauge on the mapped river network. That is not the same as none: the map leaves out many small streams and culverts, so an overflow it cannot place may still drain here, and not every company publishes every overflow. Those nearby are listed below.

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 Groundwater · 4.7 km away in a straight line · discharges to ground
36 spills · 211 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 0.35 m on about 2 days. This year so far: 0 days.

2026 0 days so far
2025 0 days
2024 11 days
2023 0 days
2022 0 days patchy data
2021 0 days
2020 0 days
2019 0 days
2018 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 2013 for the 9 flood areas linked to this gauge (nearest 2.1 km away).

17flood warnings 72flood alerts

Most recent flood warning: 31 Aug 2023 — Micheldever to Bransbury on the River Dever

Year by year
YearWarningsAlerts
2026 0 7
2025 0 5
2024 0 33
2023 1 2
2020 0 13
2015 2 0
2014 14 9
2013 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 Whitchurch flood history.

Flood areas linked to this gauge

Flood warnings and alerts are issued for whole areas. These are the 9 areas linked to this gauge, nearest first.

Show 1 more

Frequently asked questions

Is the River Test at Whitchurch Main flooding today?

The current level is 0.03m, which is within the typical range of 0.02 to 0.35m. Flooding is unlikely at this level.

Is the river level rising or falling at Whitchurch Main?

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 Whitchurch Main?

The typical range at this station is 0.02m to 0.35m, based on Environment Agency historical data. Levels above 0.35m 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 →