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Flow Rising Slightly

FROGMILL GS

Unknown
• Hampshire • ID: E12022 • Flow
(30m ago) • 2 readings/hr • 108 views
Current Flow
0.141 m3/s
▲ Rising slightly
24h Max
0.144 m3/s
24h Min
0.114 m3/s
Typical Range
-
Highest Recorded
14.37 m3/s
27 Jan 2026
Since Feb 2025
🚽 Sewage overflows nearby

Recent Flow Readings

🌍 floodradar.co.uk
1 day

Recent Readings

Rising · +1 cm over 6h
23 Aug 23:00 ▲ +0.2 cm 0.141 m3/s
23 Aug 22:45 ▲ +0.2 cm 0.139 m3/s
23 Aug 21:30 ▲ +0.1 cm 0.137 m3/s
23 Aug 21:15 ▲ +0.1 cm 0.136 m3/s
23 Aug 21:00 ▲ +0.2 cm 0.135 m3/s
23 Aug 20:45 ▲ +0.2 cm 0.133 m3/s
23 Aug 20:30 ▲ +0.3 cm 0.131 m3/s
23 Aug 20:15 ▲ +0.2 cm 0.128 m3/s
23 Aug 20:00 ▲ +0.1 cm 0.126 m3/s
23 Aug 19:45 ▼ -0.2 cm 0.125 m3/s
23 Aug 19:30 ▼ -0.1 cm 0.127 m3/s
23 Aug 19:15 ▼ -0.1 cm 0.128 m3/s
23 Aug 19:00 ▬ steady 0.129 m3/s
23 Aug 18:45 ▬ steady 0.129 m3/s
23 Aug 18:30 ▼ -0.1 cm 0.129 m3/s
23 Aug 18:15 ▲ +0.1 cm 0.130 m3/s
23 Aug 18:00 ▬ steady 0.129 m3/s
23 Aug 17:45 ▲ +0.1 cm 0.129 m3/s
23 Aug 17:30 ▬ steady 0.128 m3/s
23 Aug 17:15 0.128 m3/s

Rainfall & Weather

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Flood history near this gauge

Official Environment Agency warnings issued since 2011 for the 9 flood areas linked to this gauge (nearest 1.9 km away).

24flood warnings 87flood alerts

Most recent flood warning: 1 Feb 2026Waltham Chase, Durley Mill and Botley on the River Hamble

Year by year
YearWarningsAlerts
2026 2 5
2025 1 7
2024 4 17
2023 2 5
2022 1 8
2021 2 4
2020 1 13
2019 0 6
2018 0 3
2017 0 1
2016 1 2
2015 0 1
2014 7 10
2013 2 2
2012 1 2
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.

Nearby Stations

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Station Details

  • Monitoring Station: FROGMILL GS
  • Watercourse:
  • County: Hampshire
  • Coordinates: 50°55'53"N 1°15'27"W (50.931420, -1.257426)
  • Open in: Google Maps · Apple Maps (opens your maps app)
  • Status: Active
  • Station Type: Flow gauging station (inferred)
  • Station Reference: E12022
  • EA Gauge ID: E12022-flow--i-15_min-m3_s
  • Parameter: Flow
  • Unit: m3/s
  • Typical rise rate: 5 cm/hr (p95 sustained over 90 days)
  • Typical data delay: ~22 min (measured reading→publication lag)
  • Tidal: No
  • Lock / structure: No

Geographic coordinates may reflect the access point for the gauge, and not the precise location in the watercourse that it is taking readings from.

Frequently asked questions

Is FROGMILL GS flooding today?

The latest recorded level is 0.14m. Compare it with the recent history on the chart above to judge whether levels are unusually high.

Is the river level rising or falling at FROGMILL GS?

Based on the most recent readings, the level is currently rising slightly. The chart above shows the last 7 days of measurements, updated roughly every 15 minutes.

How often is this river level data updated?

Readings are taken by the Environment Agency gauge roughly every 15 minutes and FloodRadar refreshes its data continuously, so the level shown is normally less than an hour old.

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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, floods since 1946, warning history, river behaviour and nearby storm overflows. £19 one-off. Learn more →