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🌊 Tide coming in · high water in ~5h

Littlehampton

Arun 🌊 Tidal
Arun and Western Streams catchment • Littlehampton • West Sussex • ID: E9740 • Level
This gauge is tidally influenced — levels rise and fall with each tide, so rapid changes here are normal and don't necessarily indicate flooding.
(27m ago) • 4 readings/hr • 211 views

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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.

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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
-1.244 mAOD?
▲ Rising (+35cm/hr)
24h Max
2.799 mAOD
24h Min
-1.484 mAOD
Typical Range
-
Measured rhythm
every 12.4 hours · about 3.9 m
Highest Recorded
3.76 mAOD
EA official record
A 32.77 reading (7 Mar 2022) sits in our unverified raw history and is not treated as the record
ⓘ
Flood alert
Climping Seafront
Raised 24 Oct 2026 12:05 · 1.7km away · View flood area
🚽 Sewage overflows nearby

Recent Water Levels

🌍 floodradar.co.uk
1 day

Flood predictions aren't generated for tidal gauges — their levels are driven by the tide, not by catchment rainfall, so the forecast models would have no skill here.

Recent Readings

Falling · -250 cm over 6h
25 Oct 06:00 ▲▲ +8 cm -1.244 mAOD
25 Oct 05:45 ▲▲ +10 cm -1.322 mAOD
25 Oct 05:30 ▲ +5 cm -1.421 mAOD
25 Oct 05:15 ▲ +2 cm -1.468 mAOD
25 Oct 05:00 ▼ -2 cm -1.484 mAOD
25 Oct 04:45 ▼ -4 cm -1.467 mAOD
25 Oct 04:30 ▼ -4 cm -1.429 mAOD
25 Oct 04:15 ▼ -4 cm -1.391 mAOD
25 Oct 04:00 ▼▼ -6 cm -1.349 mAOD
25 Oct 03:45 ▼▼ -13 cm -1.291 mAOD
25 Oct 03:15 ▼▼ -10 cm -1.161 mAOD
25 Oct 03:00 ▼▼ -13 cm -1.059 mAOD
25 Oct 02:45 ▼▼ -13 cm -0.929 mAOD
25 Oct 02:30 ▼▼ -85 cm -0.802 mAOD
25 Oct 01:30 ▼▼ -20 cm 0.050 mAOD
25 Oct 01:15 ▼▼ -25 cm 0.254 mAOD
25 Oct 01:00 ▼▼ -25 cm 0.505 mAOD
25 Oct 01:45 ▼▼ -25 cm 0.753 mAOD
25 Oct 01:30 ▼▼ -25 cm 1.006 mAOD
25 Oct 01:15 1.254 mAOD

Station Details

  • Monitoring Station: Littlehampton
  • Watercourse: River Arun
  • Nearest Town: Littlehampton
  • County: West Sussex
  • Coordinates: 50°48'25"N 0°32'38"W (50.806886, -0.543902)
  • Open in: Google Maps · Apple Maps (opens your maps app)
  • Date Opened: 10 Mar 1992
  • Status: Active
  • Station Type: Tidal / coastal station
Technical details: references, datum, range, flow archive
  • Station Reference: E9740
  • RLOI id: 1162 (the EA's check-for-flooding station id)
  • EA Gauge ID: E9740-level-stage-i-15_min-mAOD
  • Parameter: Level
  • Unit: mAOD?
  • Typical rise rate: 125 cm/hr (p95 sustained over 90 days)
  • Typical data delay: ~22 min (measured reading→publication lag)
  • Tidal: 🌊 Yes — levels follow the tide
  • Lock / structure: No
  • Catchment Area: Arun and Western Streams
  • EA Cross-check: -1.32 mAOD (EA at 25 Oct 05:45)

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.

Connected upstream

Nearby

Distances by river: OS Open Rivers. Contains OS data © Crown copyright and database rights 2026.

💧 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.

26 storm overflows are traced upstream of this gauge, the nearest 3.4 km away along the river. 4 report discharging now, 20 report not discharging, and for 2 the monitor is offline or has not reported, so their status is not known.

💧
Southern Water · into Ryebank Rife Via Surface Sewer · 3.4 km upstream along the river
1 spill · 1 hours in 2025
Not discharging now · last
Reaches the river through a sewer, so where it enters is approximate.
💧
Southern Water · into The River Stor · 33.2 km upstream along the river
16 spills · 125 hours in 2025
Not discharging now · last
💧
Southern Water · into River Rother · 34.6 km upstream along the river
92 spills · 599 hours in 2025
Not discharging now · last
💧
Southern Water · into River Rother · 39.2 km upstream along the river
36 spills · 91 hours in 2025
Not discharging now · last
💧
Southern Water · into River Kird · 43.8 km upstream along the river
25 spills · 259 hours in 2025
Not discharging now · last
💧
Southern Water · into Par Brook · 44.8 km upstream along the river
44 spills · 421 hours in 2025
No live feed for this overflow
💧
Southern Water · into Par Brook · 45.0 km upstream along the river
15 spills · 105 hours in 2025
Not discharging now · last
💧
Southern Water · into Tributary Of River Rother · 46.1 km upstream along the river
64 spills · 989 hours in 2025
Not discharging now · last

18 more further upstream, up to 81.4 km away along the river.

Also discharging now further upstream: Onslow Arms Pumping Station (56.9 km), Slinfold WwTW (62.4 km), Horsham WwTW (69.8 km), Mannings Heath WwTW (77.2 km).

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 Tidal River Arun · 300 m away in a straight line · discharges to the sea, an estuary or tidal water
39 spills · 118 hours in 2025
Not discharging now · last
💧
Southern Water · into Tidal River Arun · 680 m away in a straight line · discharges to the sea, an estuary or tidal water
32 spills · 202 hours in 2025
Not discharging now · last
💧
Water Lane/Arundel Road🏊 Bathing water
Southern Water · into Freshwater River · 890 m away in a straight line · its watercourse is not on the river map
0 spills · 0 hours in 2025
No live feed for this overflow
💧
Broadmark Pumping Station🏊 Bathing water
Southern Water · into Controlled Sea · 2.6 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 · 4.2 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
💧
Arundel Pumping Station🏊 Bathing water
Southern Water · into Tidal Waters Of River Arun · 4.8 km away in a straight line · discharges to the sea, an estuary or tidal water
93 spills · 115 hours in 2025
Not discharging now · last
💧
Southern Water · into Ryebank Rife/River Arun · 4.9 km away in a straight line · its watercourse is not on the river map
1 spill · 2 hours in 2025
Not discharging now · last
💧
CSO At Town Quay PS Arundel🏊 Bathing water
Southern Water · into Freshwater River · 5.2 km away in a straight line · discharges into a tidal reach, where the water moves both ways
20 spills · 25 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. Sewage & storm overflows →

Contains OS data © Crown copyright and database rights 2026.

Rainfall & Weather

Loading rainfall and weather data...

Flood history near this gauge

Official Environment Agency warnings issued since 2012 for the 24 flood areas linked to this gauge (nearest 0.4 km away).

36flood warnings 372flood alerts

Most recent flood warning: 8 Jan 2026 — Climping

Year by year
YearWarningsAlerts
2026 1 13
2025 0 28
2024 6 75
2023 8 43
2022 3 40
2021 0 18
2020 2 70
2019 1 16
2018 0 3
2017 0 3
2016 0 12
2015 0 5
2014 2 33
2013 2 6
2012 11 7

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 Littlehampton flood history.

Flood areas linked to this gauge

Flood warnings and alerts are issued for whole areas. These are the 24 areas linked to this gauge, nearest first.

Show 16 more

Frequently asked questions

Is the River Arun at Littlehampton flooding today?

The latest recorded level is -1.24m. 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 Littlehampton?

Based on the most recent readings, the level is currently rising. 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.

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 →