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Water Level Easing
Easing — down from -3.41 at 21:00, now -3.44
-3.44

Ferring Outfall

Arun
Arun and Western Streams catchment • Ferring • West Sussex • ID: E9510 • Level
(24m ago) • 4 readings/hr • 155 views

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Current Level
-3.440 mASD
▼ Easing (-1cm/hr)
24h Max
-3.409 mASD
24h Min
-3.456 mASD
Typical Range
0.45 - 3.20
mASD
Highest Recorded
-1.34 mASD
19 Feb 2026
Since Jan 2019
🚽 Sewage overflows nearby

Recent Water Levels

🌍 floodradar.co.uk
1 day

Recent Readings

Steady over 6h
10 Oct 01:30 ▲ +1 cm -3.440 mASD
10 Oct 01:15 ▼ -2 cm -3.454 mASD
10 Oct 01:00 ▼ -2 cm -3.435 mASD
10 Oct 00:45 ▲ +3 cm -3.416 mASD
10 Oct 00:30 ▲ +0.2 cm -3.446 mASD
10 Oct 00:15 ▼ -0.9 cm -3.448 mASD
10 Oct 00:00 ▼ -2 cm -3.439 mASD
09 Oct 23:45 ▲ +0.3 cm -3.416 mASD
09 Oct 23:30 ▲ +3 cm -3.419 mASD
09 Oct 22:30 ▲ +0.7 cm -3.445 mASD
09 Oct 22:15 ▼ -4 cm -3.452 mASD
09 Oct 22:00 ▲ +0.1 cm -3.409 mASD
09 Oct 21:45 ▲ +1 cm -3.410 mASD
09 Oct 21:30 ▲ +3 cm -3.423 mASD
09 Oct 21:15 ▼ -2 cm -3.450 mASD
09 Oct 21:00 ▬ steady -3.430 mASD
09 Oct 20:45 ▼ -1 cm -3.430 mASD
09 Oct 20:30 ▲ +0.7 cm -3.419 mASD
09 Oct 20:15 ▲ +1 cm -3.426 mASD
09 Oct 20:00 -3.440 mASD

Station Details

  • Monitoring Station: Ferring Outfall
  • Watercourse: River Arun
  • Nearest Town: Ferring
  • County: West Sussex
  • Coordinates: 50°48'12"N 0°27'9"W (50.803264, -0.452563)
  • Open in: Google Maps · Apple Maps (opens your maps app)
  • Date Opened: 26 Jul 1999
  • Status: Active
  • Station Type: River level station
Technical details: references, datum, range, flow archive
  • Station Reference: E9510
  • RLOI id: 9260 (the EA's check-for-flooding station id)
  • EA Gauge ID: E9510-level-stage-i-15_min-mASD
  • Parameter: Level
  • Unit: mASD
  • Typical rise rate: 15 cm/hr (p95 sustained over 90 days)
  • Typical data delay: ~22 min (measured reading→publication lag)
  • Tidal: No
  • Lock / structure: No
  • Catchment Area: Arun and Western Streams
  • Datum: 4.324m AOD
  • Typical Range: 0.450 – 3.200 mASD
  • EA Cross-check: -3.45 mASD (EA at 10 Oct 01:15)

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.

Nearby

💧 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 1.5 km away along the river. 0 report discharging now, 1 reports not discharging.

💧
Southern Water · into Ferring Rife · 1.5 km upstream along the river
1 spill · 11 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 English Channel · 2.1 km away in a straight line · discharges to the sea, an estuary or tidal water
4 spills · 8 hours in 2025
Not discharging now · last
💧
Broadmark Pumping Station🏊 Bathing water
Southern Water · into Controlled Sea · 3.9 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
💧
Littlehampton Wwps🏊 Bathing water
Southern Water · into Controlled Sea · 5.1 km away in a straight line · discharges to the sea, an estuary or tidal water
97 spills · 748 hours in 2025
Not discharging now · last

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 3.20 m: 0 days since 2019. This year so far: 0 days.

2026 0 days so far
2025 0 days
2024 0 days
2023 0 days
2022 0 days
2021 0 days
2020 0 days
2019 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 2012 for the 17 flood areas linked to this gauge (nearest 2.0 km away).

16flood warnings 245flood alerts

Most recent flood warning: 8 Jan 2026 — Climping

Year by year
YearWarningsAlerts
2026 1 5
2025 0 21
2024 4 49
2023 2 20
2022 3 27
2021 0 17
2020 2 58
2019 0 6
2018 0 2
2017 0 3
2016 0 1
2015 0 2
2014 2 24
2013 1 4
2012 1 6

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 Ferring flood history.

Flood areas linked to this gauge

Flood warnings and alerts are issued for whole areas. These are the 17 areas linked to this gauge, nearest first.

Show 9 more

Frequently asked questions

Is the River Arun at Ferring Outfall flooding today?

The current level is -3.44m, which is below the typical range. Flooding is very unlikely at this level.

Is the river level rising or falling at Ferring Outfall?

Based on the most recent readings, the level is currently falling slightly. The chart above shows the last 12 hours of measurements by default (up to 7 days), 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.

What is a normal level for the River Arun at Ferring Outfall?

The typical range at this station is 0.45m to 3.20m, based on Environment Agency historical data. Levels above 3.20m 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:

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