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Does Ash Vale flood?

Surrey
57postcodes in the EA rivers-and-sea dataset
10river gauges within 10 km
2years with a mapped flood record within 5 km
🏠 Thinking of buying in Ash Vale? Get the detailed Property Flood-Risk Report for any Ash Vale 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 Ash Vale

Ordnance Survey places 57 postcodes in Ash Vale 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 1,027 properties in the EA dataset's likelihood bands.

EA likelihood bandPostcodes (worst band)Properties in the EA datasetof which homes
High7149144
Medium033
Low50875778
Very low000
All bands571,027925

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 Ash Vale

Environment Agency gauges within 10 km of Ash Vale watch River Blackwater, Cove Brook, Fleet Brook, River Wey, River Hart.

Distances are from the middle of Ash Vale'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 Ash Vale

The nearest watercourse on the river map is an unnamed stream, about 30 m from the middle of Ash Vale's at-risk postcodes. It flows into Blackwater River about 680 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 an unnamed stream nearest the middle of Ash Vale'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 Ash Vale

11 Environment Agency flood warning areas lie within 10 km of Ash Vale. The EA has issued 91 flood warnings and alerts for them since 2006, most recently on 3 Feb 2026.

Recorded floods near Ash Vale

Floods whose mapped extent (EA Recorded Flood Outlines) reached within ~5 km of Ash Vale, 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 Ash Vale

Ash Vale gets about 754 mm of rain a year on average (wettest month November, 88 mm; driest May, 47 mm). That is 35% drier than the UK as a whole, which averages 1,163 mm a year. Source: Met Office HadUK-Grid 1991–2020 (5 km grid), 1.4 km from the place centre.

The nearest rain gauge, Rainfall station (5.7 km away), recorded 1.8 mm in the last 24 hours and 69.0 mm in the last 7 days (latest reading 29 min ago).

At-risk postcodes in Ash Vale

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

High likelihood (7)

GU12 5AAGU12 5AFGU12 5ALGU12 5ANGU12 5AWGU12 5FAGU12 5PQ

Low likelihood (50)

GU12 5GNGU12 5HTGU12 5JFGU12 5JGGU12 5JPGU12 5JRGU12 5JSGU12 5JTGU12 5JWGU12 5JYGU12 5JZGU12 5LEGU12 5LFGU12 5LGGU12 5LQGU12 5LXGU12 5LYGU12 5LZGU12 5NDGU12 5NEGU12 5NFGU12 5NGGU12 5NQGU12 5PRGU12 5PTGU12 5PYGU12 5QAGU12 5QDGU12 5QFGU12 5QJGU12 5QNGU12 5QWGU12 5RTGU12 5SAGU12 5SBGU12 5SDGU12 5SEGU12 5SFGU12 5SGGU12 5SHGU12 5SJGU12 5SLGU12 5SNGU12 5SPGU12 5SRGU12 5SWGU12 5SXGU14 6JBGU14 6JDGU14 6JF

Postcode districts

GU12 · 54GU14 · 3

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