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⤴Unusual rise — FloodRadar+Top 1% rise rate for this gauge.
Height for "Above a height"
Drag the line on the chart, or type a value:mASD
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You'll be notified when this gauge is rising more than 0.10 m/hr — a sign of rapidly increasing water levels.
You'll be notified when a new storm-overflow (sewage) discharge starts within ~3 km of this gauge, based on the water companies' near-real-time feeds.
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Not an emergency service — if in danger call 999. Alerts rely on
EA/SEPA/NRW data and are best-efforts. Terms
Current Level
0.905 mASD
▬ Steady
24h Max
0.906 mASD
24h Min
0.894 mASD
Typical Range
0.13 - 1.60
mASD
Highest Recorded
1.72 mASD
EA official record
A 2.12 reading (20 Jun 2024) sits in our unverified raw history and is not treated as the record
Current level is 53% of this
🚽Sewage overflows nearby
Recent Water Levels
🌍 floodradar.co.uk
1 day
EA forecast (official)
Prediction V2
Prediction Eris
Nimbus beta
Experimental model fusing soil moisture, river flow, groundwater and catchment
character. The shaded band is its 10–90% range, widened so that about 80% of recent outcomes fall inside it.
Under evaluation — not yet promoted, so treat as a second opinion.
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 3.9 km away along the river. 0 report discharging now, 1 reports not discharging.
Southern Water · into Portsmouth Harbour · 2.7 km away in a straight line · discharges to the sea, an estuary or tidal water
0 spills · 0 hours in 2025
Not discharging now · last
22 more within 6 km whose connection is not known.
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 →
This gauge rarely reaches its typical high of 1.60 m:
4 days since 2018.
This year so far: 1 day.
20261 day so far
20251 day
20240 days
20232 days
20220 days
20210 days
20200 days
20190 days
20180 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 2011 for the 21 flood
areas linked to this gauge (nearest 0.1 km away).
1severe warning33flood warnings225flood alerts
Most recent flood warning:
2 Feb 2026
— Wallington
Year by year
Year
Severe
Warnings
Alerts
2026
0
2
8
2025
0
0
14
2024
0
5
23
2023
0
2
18
2022
0
1
15
2021
0
3
11
2020
0
1
29
2019
0
2
15
2018
0
0
9
2017
0
0
5
2016
0
0
9
2015
0
0
3
2014
0
12
35
2013
0
4
17
2012
1
1
12
2011
0
0
2
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 Gosport flood history.
Flood areas linked to this gauge
Flood warnings and alerts are issued for whole areas. These are the 21 areas linked to this gauge, nearest first.
Timing, not cause. Gauges can move together simply because the same rain fell on both.
Frequently asked questions
Is the River Alver at Browndown flooding today?
The current level is 0.91m, which is within the typical range of 0.13 to 1.60m. Flooding is unlikely at this level.
Is the river level rising or falling at Browndown?
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 Alver at Browndown?
The typical range at this station is 0.13m to 1.60m, based on Environment Agency historical data. Levels above 1.60m 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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