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Does Runcorn flood?

Halton
46postcodes in the EA rivers-and-sea dataset
6river gauges within 10 km
2tidal gauges within 10 km
13years with a mapped flood record within 5 km
🏠 Thinking of buying in Runcorn? Get the detailed Property Flood-Risk Report for any Runcorn postcode — official risk band, recorded floods since 1703, warning history, river behaviour and nearby storm overflows. £19 one-off, instant. Learn more →

Flood warnings in force near Runcorn

From the Environment Agency (England). Always check the GOV.UK Check for Flooding service or call Floodline on 0345 988 1188.

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

Ordnance Survey places 46 postcodes in Runcorn 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 449 properties in the EA dataset's likelihood bands.

EA likelihood bandPostcodes (worst band)Properties in the EA datasetof which homes
High10236
Medium14136125
Low17144101
Very low5146141
All bands46449373

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 Runcorn

Environment Agency gauges within 10 km of Runcorn watch River Mersey, Sankey Brook, River Weaver, Morris Brook.

Distances are from the middle of Runcorn'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 Runcorn

Two mapped watercourses are about the same distance from the middle of Runcorn's at-risk postcodes: an unnamed stream (about 480 m) and an unnamed stream (about 520 m), so this page cannot say which one is nearer to you.

Distances along the river are from the point on each watercourse nearest the middle of Runcorn'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 Runcorn

30 Environment Agency flood warning areas lie within 10 km of Runcorn. The EA has issued 543 flood warnings and alerts for them since 2006, most recently on 26 Oct 2026.

Recorded floods near Runcorn

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

…and 18 earlier recorded floods on the map.

Rainfall near Runcorn

Runcorn gets about 832 mm of rain a year on average (wettest month October, 84 mm; driest March, 54 mm). That is 28% drier than the UK as a whole, which averages 1,163 mm a year. Source: Met Office HadUK-Grid 1991–2020 (5 km grid), 2.0 km from the place centre.

The nearest rain gauge, Rainfall station (7.7 km away), recorded 6.8 mm in the last 24 hours and 59.3 mm in the last 7 days (latest reading 27 min ago).

At-risk postcodes in Runcorn

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

High likelihood (10)

WA7 1DTWA7 1NYWA7 1QQWA7 1RSWA7 1RWWA7 1SPWA7 1TFWA7 1TGWA7 1UPWA7 4FZ

Medium likelihood (14)

WA7 1EAWA7 1EBWA7 1FYWA7 1QDWA7 1QJWA7 1QLWA7 1QNWA7 1QPWA7 1QRWA7 1QWWA7 1QXWA7 1UXWA7 4XTWA7 4XW

Low likelihood (17)

WA7 1DYWA7 1FZWA7 1JBWA7 1LZWA7 1NRWA7 1QEWA7 1QUWA7 1RDWA7 1TZWA7 1UHWA7 1UJWA7 1USWA7 1UUWA7 1WAWA7 1WBWA7 3EHWA7 4LT

Very low likelihood (5)

WA7 1HYWA7 1HZWA7 1UEWA7 1WDWA7 4UY

Postcode districts

WA7 · 46

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