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Does Eton Wick flood?

Windsor and Maidenhead
50postcodes in the EA rivers-and-sea dataset
12river gauges within 10 km
3years with a mapped flood record within 5 km
🏠 Thinking of buying in Eton Wick? Get the detailed Property Flood-Risk Report for any Eton Wick postcode — official risk band, recorded floods since 1703, warning history, river behaviour and nearby storm overflows. £19 one-off, instant. Learn more →

What the Environment Agency's rivers-and-sea flood-risk data says about Eton Wick

Ordnance Survey places 50 postcodes in Eton Wick in the Environment Agency's rivers-and-sea flood-risk dataset (Risk of Flooding from Rivers and Sea). Each postcode is counted once, under the worst band any of its properties reaches; together they hold 1,040 properties in the EA dataset's likelihood bands.

EA likelihood bandPostcodes (worst band)Properties in the EA datasetof which homes
High000
Medium104138
Low40986927
Very low01310
All bands501,040975

This dataset covers flooding from rivers and the sea only — one of five flood sources. Surface water, groundwater, sewers and reservoirs are assessed separately, so a postcode missing from it is not proof that a place cannot flood. The band describes the land around properties (allowing for defences), not any single address and not today's conditions.

Rivers and live river levels near Eton Wick

Environment Agency gauges within 10 km of Eton Wick watch River Thames, The Cut, Jubilee River, Maidenhead Ditch, Colne Brook.

Distances are from the middle of Eton Wick's at-risk postcodes. Tidal and structure gauges are shown as readings only — the tide and sluice gates move them, not floods. A gauge with no recent reading shows no level.

The watercourse nearest Eton Wick

The nearest watercourse on the river map is Boveney Ditch, about 250 m from the middle of Eton Wick's at-risk postcodes. It flows into the River Thames about 570 m downstream.

A gauge downstream shows water that has already passed this point; one upstream sees it first. Distances along the river are from the point on Boveney Ditch nearest the middle of Eton Wick's at-risk postcodes. From Ordnance Survey’s river map (OS Open Rivers), which leaves out small streams, ditches and culverts, so a nearer one may exist. This describes where water goes on the map; it says nothing about flooding at any address. Contains OS data © Crown copyright and database rights 2026.

Flood warning areas near Eton Wick

22 Environment Agency flood warning areas lie within 10 km of Eton Wick. The EA has issued 196 flood warnings and alerts for them since 2006, most recently on 28 Feb 2026.

Recorded floods near Eton Wick

Floods whose mapped extent (EA Recorded Flood Outlines) reached within ~5 km of Eton Wick, most recent first. Records, not floods: no outline on the record is not evidence a place has not flooded. See them on the map →

Rainfall near Eton Wick

Eton Wick gets about 641 mm of rain a year on average (wettest month November, 72 mm; driest March, 41 mm). That is 45% drier than the UK as a whole, which averages 1,163 mm a year. Source: Met Office HadUK-Grid 1991–2020 (5 km grid), 2.4 km from the place centre.

The nearest rain gauge, Rainfall station (5.7 km away), recorded 3.3 mm in the last 24 hours and 63.3 mm in the last 7 days (latest reading 29 min ago).

At-risk postcodes in Eton Wick

Every postcode Ordnance Survey places in Eton Wick that appears in the EA's rivers-and-sea dataset, worst band first. Each links to its own flood-risk page.

Medium likelihood (10)

SL4 6JNSL4 6JTSL4 6JXSL4 6JZSL4 6LASL4 6LESL4 6LFSL4 6LGSL4 6LLSL4 6LQ

Low likelihood (40)

SL4 6JASL4 6JBSL4 6JESL4 6JFSL4 6JGSL4 6JHSL4 6JJSL4 6JLSL4 6JPSL4 6JRSL4 6JSSL4 6JUSL4 6JWSL4 6JYSL4 6LBSL4 6LDSL4 6LHSL4 6LJSL4 6LNSL4 6LPSL4 6LTSL4 6LUSL4 6LXSL4 6LYSL4 6LZSL4 6NASL4 6NBSL4 6NDSL4 6NESL4 6NFSL4 6NGSL4 6NHSL4 6NJSL4 6NLSL4 6NNSL4 6NPSL4 6NQSL4 6NWSL4 6PPSL4 6PQ

Postcode districts

SL4 · 50

Sources

FloodRadar summarises public flood data. It is not a flood-risk survey of any property, and it does not replace official GOV.UK flood warnings or the GOV.UK long-term flood risk service.

Flood-risk bands: © Environment Agency copyright and/or database right 2025. All rights reserved. Some features of this map are based on digital spatial data from the Centre for Ecology & Hydrology, © NERC (CEH). © Crown Copyright and Database Rights 2025 OS AC0000807064. This product is produced in part from PAF® and Multiple Residence Data, the copyright in which is owned by Royal Mail Group Limited and/or Royal Mail Group plc. All rights reserved. Licence number AC0000807064.

Recorded Flood Outlines, flood warning areas and warning history © Environment Agency copyright and/or database right 2025. Licensed under the Open Government Licence v3.0.

River levels and rainfall: Environment Agency real-time flood-monitoring data, updated every 15 minutes (Open Government Licence v3.0).

Average rainfall: HadUK-Grid v1.3.2, Met Office. Contains public sector information licensed under the Open Government Licence v3.0.

Place names: Contains OS data © Crown copyright and database rights 2026. Contains Royal Mail data © Royal Mail copyright and database right 2026. Contains National Statistics data © Crown copyright and database right 2026. Licensed under the Open Government Licence v3.0.

All data sources & licences