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-0.06

Millbrook

Tanners Brook
Test and Itchen catchment • Millbrook • England • ID: E13281 • Level
(34m ago) • 4 readings/hr • 168 views

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Not an emergency service — if in danger call 999. Alerts rely on EA/SEPA data and are best-efforts. Terms

Current Level
-0.056 mASD
▬ Steady
24h Max
-0.051 mASD
24h Min
-0.060 mASD
Typical Range
0.03 - 0.50
mASD
Highest Recorded
0.90 mASD
17 Feb 2014
Since Nov 2012
🚽 Sewage overflows nearby

Recent Water Levels

🌍 floodradar.co.uk
1 day

Recent Readings

Steady over 6h
24 Aug 00:15 ▬ steady -0.056 mASD
24 Aug 00:00 ▬ steady -0.056 mASD
23 Aug 23:45 ▼ -0.5 cm -0.056 mASD
23 Aug 23:30 ▬ steady -0.051 mASD
23 Aug 23:15 ▲ +0.4 cm -0.051 mASD
23 Aug 23:00 ▬ steady -0.055 mASD
23 Aug 22:45 ▼ -0.2 cm -0.055 mASD
23 Aug 21:30 ▲ +0.1 cm -0.053 mASD
23 Aug 21:15 ▲ +0.3 cm -0.054 mASD
23 Aug 21:00 ▼ -0.3 cm -0.057 mASD
23 Aug 20:45 ▲ +0.3 cm -0.054 mASD
23 Aug 20:30 ▲ +0.1 cm -0.057 mASD
23 Aug 20:15 ▼ -0.3 cm -0.058 mASD
23 Aug 20:00 ▲ +0.3 cm -0.055 mASD
23 Aug 19:45 ▼ -0.4 cm -0.058 mASD
23 Aug 19:30 ▬ steady -0.054 mASD
23 Aug 19:15 ▲ +0.5 cm -0.054 mASD
23 Aug 19:00 ▼ -0.2 cm -0.059 mASD
23 Aug 18:45 ▬ steady -0.057 mASD
23 Aug 18:30 -0.057 mASD

Rainfall & Weather

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Flood history near this gauge

Official Environment Agency warnings issued since 2014 for the 4 flood areas linked to this gauge (nearest 1.2 km away).

5flood warnings 3flood alerts

Most recent flood warning: 8 Apr 2024Itchen estuary

Year by year
YearWarningsAlerts
2024 1 1
2023 2 0
2020 0 1
2017 0 1
2014 2 0

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 Millbrook flood history.

Nearby Stations

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Station Details

  • Monitoring Station: Millbrook
  • Watercourse: Tanners Brook
  • Nearest Town: Millbrook
  • County: England
  • Coordinates: 50°55'11"N 1°26'53"W (50.919652, -1.447963)
  • Open in: Google Maps · Apple Maps (opens your maps app)
  • Date Opened: 1 Jan 1977
  • Status: Active
  • Station Type: River level station
  • Station Reference: E13281
  • EA Gauge ID: E13281-level-stage-i-15_min-mASD
  • Parameter: Level
  • Unit: mASD
  • Typical rise rate: 2 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: 0.026 – 0.500 mASD
  • Drainage Area: 16 km² upstream of this gauge
  • EA Cross-check: -0.06 mASD (EA at 24 Aug 00:15)
  • Flow Archive: National River Flow Archive ↗

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

Catchment Character

🌊 Urban & flashy Heavily built-up — rain runs off hard surfaces fast, so levels can spike within hours of heavy rain.

Your catchment is all the land that drains rainfall into the river above this gauge. Its character — how steep, wet, wooded, urban or chalky that land is — decides how fast rain here turns into a rising river. A steep, bare or clay catchment is “flashy” (rises and falls quickly, floods easily); a flat, chalk or well-wooded one is slow and steady. The tiles below put numbers to that; the flow-duration curve reads left-to-right from the river’s typical high flows (Q5) down to its low flows (Q95) — a steep curve means a flashy river.

The physical character of the land that drains to this gauge, and how it shapes its flood response — from the National River Flow Archive (UKCEH).

Baseflow Index
0.37
mixed response
Avg Annual Rainfall
874 mm/yr
1991–2020 · +9% since 1941–70
Urban Extent
25%
heavily urbanised
Highest Recorded Flow
3.06 m³/s
1 Jan 2003
Flow-Duration Curve
mean 0.2070.6140.1500.0125% (high)% of days exceeded95% (low)
Daily flow (m³/s) exceeded each % of the time — a steep curve is flashy, a flat one is steady. Q5 high · Q50 median · Q95 low.
Land Cover (2023)
Woodland 31%Grassland 24%Arable 1%Urban 44%

Photos

Gauging-station photographs from the National River Flow Archive (UKCEH).

Photos © NRFA / UKCEH & the measuring authority — shown at web resolution. Full gallery on the NRFA ↗

About this gauge

Velocity area station with a responsive regime and urban catchment.

More detail

The catchment

A largely urban (Southampton) catchment developed on impervious Tertiary formations.

The station

Velocity area station in a trapezoidal concrete section.

How it measures flow

Initially a level only station but stage-discharge relation now established for all but the highest flows. Structure contains even the highest flows, so good confidence in high flows at this site.

Flow regime

Responsive regime.

The flow record

Pre-1992 (and some later) peaks truncated at ~1 cumec.

Descriptions from the National River Flow Archive (UKCEH). NRFA station record ↗

Gauge Details

How this gauging station is built and how long it has measured (NRFA / UKCEH).

Gauge type
Velocity–area
Operating since
1977–2015
Station datum
3.9 mAOD
Flow record
1977–2013 · 36 yrs · 98% complete
Hydrometric area
42
Measured by
Environment Agency

Frequently asked questions

Is the Tanners Brook at Millbrook flooding today?

The current level is -0.06m, which is below the typical range. Flooding is very unlikely at this level.

Is the river level rising or falling at Millbrook?

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

What is a normal level for the Tanners Brook at Millbrook?

The typical range at this station is 0.03m to 0.50m, based on Environment Agency historical data. Levels above 0.50m are higher than usually seen and may indicate a flood risk.

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 →