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Flow Falling

COSTESSEY MILL SLUICE

Unknown ⚙ Structure
• Norfolk • ID: E19865 • Flow
(1h ago) • 1 reading/hr • 92 views
Current Flow
1.356 m3/s
▼ Falling (-18cm/hr)
24h Max
1.621 m3/s
24h Min
0.928 m3/s
Typical Range
-
Highest Recorded
32.00 m3/s
11 Jun 2025
Since Feb 2025
🚽 Sewage overflows nearby

Recent Flow Readings

🌍 floodradar.co.uk
1 day

Recent Readings

Falling · -15 cm over 17h
23 Aug 23:24 ▼ -18 cm 1.356 m3/s
23 Aug 22:24 ▼ -8 cm 1.540 m3/s
23 Aug 21:24 ▬ steady 1.615 m3/s
23 Aug 20:24 ▬ steady 1.615 m3/s
23 Aug 20:00 ▬ steady 1.615 m3/s
23 Aug 19:24 ▬ steady 1.615 m3/s
23 Aug 18:24 ▼ -0.6 cm 1.615 m3/s
23 Aug 17:24 ▲ +0.6 cm 1.621 m3/s
23 Aug 16:24 ▲ +1 cm 1.615 m3/s
23 Aug 15:24 ▲ +2 cm 1.604 m3/s
23 Aug 14:24 ▬ steady 1.588 m3/s
23 Aug 13:24 ▲ +3 cm 1.588 m3/s
23 Aug 12:24 ▬ steady 1.562 m3/s
23 Aug 12:00 ▬ steady 1.562 m3/s
23 Aug 11:24 ▬ steady 1.562 m3/s
23 Aug 10:24 ▲ +0.8 cm 1.562 m3/s
23 Aug 09:24 ▲ +2 cm 1.554 m3/s
23 Aug 08:24 ▲ +0.8 cm 1.535 m3/s
23 Aug 07:24 ▲ +2 cm 1.527 m3/s
23 Aug 06:24 1.509 m3/s

Rainfall & Weather

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Flood history near this gauge

Official Environment Agency warnings issued since 2007 for the 9 flood areas linked to this gauge (nearest 3.0 km away).

29flood warnings 83flood alerts

Most recent flood warning: 8 Dec 2024The River Yare from Barnham Broom to the A11 at Cringleford

Year by year
YearWarningsAlerts
2024 6 13
2023 4 5
2021 0 7
2020 4 2
2019 2 2
2018 0 5
2017 0 6
2016 2 5
2014 1 4
2013 1 3
2012 0 4
2011 0 1
2010 0 4
2009 0 2
2008 1 5
2007 8 15

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: COSTESSEY MILL SLUICE
  • Watercourse:
  • County: Norfolk
  • Coordinates: 52°40'6"N 1°13'6"E (52.668256, 1.218212)
  • Open in: Google Maps · Apple Maps (opens your maps app)
  • Status: Active
  • Station Type: Flow gauging station (inferred)
  • Station Reference: E19865
  • EA Gauge ID: E19865-flow-stage-i-15_min-m3_s
  • Parameter: Flow
  • Unit: m3/s
  • Typical rise rate: 11 cm/hr (p95 sustained over 90 days)
  • Typical data delay: ~17 min (measured reading→publication lag)
  • Tidal: No
  • Lock / structure: ⚙ Yes — lock, weir, sluice or pump

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 COSTESSEY MILL SLUICE flooding today?

The latest recorded level is 1.36m. 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 COSTESSEY MILL SLUICE?

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

Why is the level slowly falling?

When little or no rain has fallen for a while, a river level gradually drops as the water stored in the ground and soil drains away with nothing to replace it. This is called baseflow recession and is normal in dry spells. Only about 0.0mm of rain has fallen nearby in the last 7 days, so the flow is being sustained mainly by groundwater. A gentle decline like this is expected and is not a sign of a problem — downstream gauges often recede a little faster than headwaters further upstream, and levels recover once rain returns.

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 →