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0.36

Wharf Mill

Itchen
Test and Itchen catchment • Winchester • Hampshire • ID: E12470 • Level
(32m ago) • 4 readings/hr • 143 views

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⤴ Unusual rise — FloodRadar+Top 1% rise rate for this gauge.
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Current Level
0.360 mASD
▬ Steady
24h Max
0.362 mASD
24h Min
0.349 mASD
Typical Range
0.32 - 0.81
mASD
Highest Recorded
1.15 mASD
EA official record
1.00 in our data (since Nov 2012)
Current level is 31% of this
🚽 Sewage overflows nearby

Recent Water Levels

🌍 floodradar.co.uk
1 day

Recent Readings

Rising · +0.7 cm over 5h
09 Oct 19:15 ▲ +0.1 cm 0.360 mASD
09 Oct 19:00 ▬ steady 0.359 mASD
09 Oct 18:45 ▼ -0.1 cm 0.359 mASD
09 Oct 18:30 ▲ +0.1 cm 0.360 mASD
09 Oct 18:15 ▬ steady 0.359 mASD
09 Oct 18:00 ▼ -0.1 cm 0.359 mASD
09 Oct 17:45 ▲ +0.3 cm 0.360 mASD
09 Oct 17:30 ▼ -0.1 cm 0.357 mASD
09 Oct 17:15 ▬ steady 0.358 mASD
09 Oct 17:00 ▼ -0.1 cm 0.358 mASD
09 Oct 16:45 ▼ -0.3 cm 0.359 mASD
09 Oct 16:30 ▲ +0.8 cm 0.362 mASD
09 Oct 16:15 ▼ -0.1 cm 0.354 mASD
09 Oct 16:00 ▬ steady 0.355 mASD
09 Oct 15:45 ▬ steady 0.355 mASD
09 Oct 15:30 ▲ +0.1 cm 0.355 mASD
09 Oct 15:00 ▬ steady 0.354 mASD
09 Oct 14:45 ▲ +0.1 cm 0.354 mASD
09 Oct 14:30 ▬ steady 0.353 mASD
09 Oct 14:15 0.353 mASD

Station Details

  • Monitoring Station: Wharf Mill
  • Watercourse: River Itchen
  • Nearest Town: Winchester
  • County: Hampshire
  • Coordinates: 51°3'30"N 1°18'30"W (51.058200, -1.308338)
  • Open in: Google Maps · Apple Maps (opens your maps app)
  • Date Opened: 1 Jan 2001
  • Status: Active
  • Station Type: River level station
Technical details: references, datum, range, flow archive
  • Station Reference: E12470
  • RLOI id: 1059 (the EA's check-for-flooding station id)
  • EA Gauge ID: E12470-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
  • Datum: 33.292m AOD
  • Typical Range: 0.319 – 0.810 mASD
  • EA Cross-check: 0.36 mASD (EA at 9 Oct 19:15)

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, the nearest 2.8 km away along the river. 0 report discharging now, 1 reports not discharging.

💧
Southern Water · into The River Itchen · 2.8 km upstream along the river
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 Groundwaters Via 2 Infilt Syst · 1.1 km away in a straight line · discharges to ground
7 spills · 14 hours in 2025
No live feed for this overflow
💧
Southern Water · into Groundwaters Via 2 Infilt Syst · 1.4 km away in a straight line · discharges to ground
0 spills · 0 hours in 2025
Not discharging now · last
💧
Southern Water · into River Itchen · 5.6 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

1 other overflow within 6 km is downstream of this gauge or on another branch of the river network, so it is 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

This gauge rarely reaches its typical high of 0.81 m: 5 days since 2017. This year so far: 5 days.

2026 5 days so far
2025 0 days
2024 0 days
2023 0 days
2022 0 days
2021 0 days
2020 0 days
2019 0 days
2018 0 days
2017 0 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 2011 for the 8 flood areas linked to this gauge (nearest 0.5 km away).

29flood warnings 139flood alerts

Most recent flood warning: 9 May 2023 — Ovington to Abbots Worthy on the River Itchen

Year by year
YearWarningsAlerts
2026 0 17
2025 0 3
2024 0 36
2023 2 9
2021 0 3
2020 0 23
2014 27 40
2013 0 4
2012 0 3
2011 0 1

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 Winchester flood history.

Flood areas linked to this gauge

Flood warnings and alerts are issued for whole areas. These are the 8 areas linked to this gauge, nearest first.

Frequently asked questions

Is the River Itchen at Wharf Mill flooding today?

The current level is 0.36m, which is within the typical range of 0.32 to 0.81m. Flooding is unlikely at this level.

Is the river level rising or falling at Wharf Mill?

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 Wharf Mill?

The typical range at this station is 0.32m to 0.81m, based on Environment Agency historical data. Levels above 0.81m 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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