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Does Lymm flood?

Warrington
27postcodes in the EA rivers-and-sea dataset
8river gauges within 10 km
1tidal gauge within 10 km
9years with a mapped flood record within 5 km
🏠 Thinking of buying in Lymm? Get the detailed Property Flood-Risk Report for any Lymm 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 Lymm

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 Lymm

Ordnance Survey places 27 postcodes in Lymm 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 132 properties in the EA dataset's likelihood bands.

EA likelihood bandPostcodes (worst band)Properties in the EA datasetof which homes
High163729
Medium23621
Low95948
Very low000
All bands2713298

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 Lymm

Environment Agency gauges within 10 km of Lymm watch Manchester ship canal, Morris Brook, River Bollin, Sinderland Brook, River Mersey, Glaze Brook, Sankey Brook.

Distances are from the middle of Lymm'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 Lymm

The nearest watercourse on the river map is Sow Brook, about 150 m from the middle of Lymm's at-risk postcodes.

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 Sow Brook nearest the middle of Lymm'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 Lymm

24 Environment Agency flood warning areas lie within 10 km of Lymm. The EA has issued 284 flood warnings and alerts for them since 2006, most recently on 26 Oct 2026.

Recorded floods near Lymm

Floods whose mapped extent (EA Recorded Flood Outlines) reached within ~5 km of Lymm, 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 8 earlier recorded floods on the map.

Rainfall near Lymm

Lymm gets about 824 mm of rain a year on average (wettest month October, 87 mm; driest March, 52 mm). That is 29% drier than the UK as a whole, which averages 1,163 mm a year. Source: Met Office HadUK-Grid 1991–2020 (5 km grid), 0.8 km from the place centre.

The nearest rain gauge, Rainfall station (6.2 km away), recorded 8.8 mm in the last 24 hours and 59.8 mm in the last 7 days (latest reading 27 min ago).

At-risk postcodes in Lymm

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

High likelihood (16)

WA13 0ABWA13 0HRWA13 9AHWA13 9ASWA13 9BAWA13 9BNWA13 9BWWA13 9DQWA13 9NTWA13 9PHWA13 9QHWA13 9QLWA13 9QNWA13 9QPWA13 9QSWA13 9QW

Medium likelihood (2)

WA13 9ABWA13 9BJ

Low likelihood (9)

WA13 0ADWA13 9ALWA13 9BLWA13 9DNWA13 9PSWA13 9PUWA13 9PZWA13 9QAWA13 9RU

Postcode districts

WA13 · 27

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