Does L35 flood?

Yes — parts of the L35 district carry real flood risk: 5 of its 13 at-risk postcodes reach the Environment Agency's High likelihood band. The L35 postcode district covers Rainhill, Halewood North, Whiston and Cronton, close to Netherley, St Helens, Haydock, and surrounding villages in parts of Liverpool City Region and Warrington.

13 postcodes in the L35 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 5 high, 2 medium, 6 low. A postcode not listed here has no properties in any recorded risk band (which is good news, but never proof it cannot flood).

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Which L35 postcodes are at risk?

L35 1QA up to High L35 1QD up to High L35 1QH up to High L35 1QZ up to High L35 4PX up to High L35 4PH up to Medium L35 4PS up to Medium L35 1QN up to Low L35 1QR up to Low L35 4PB up to Low L35 4PT up to Low L35 4PZ up to Low L35 4QY up to Low

Rivers and flooding history near L35

The rivers that matter here, each monitored live on FloodRadar:

Winster Drive on the Netherley Brook — 3.6 km away, highest on record 2.92m
Ellamsbridge Road, St Helens on the Sutton Mill Brook — 6.4 km away, highest on record 1.29m
Haydock West End Road on the Black Brook — 8.6 km away
Liverpool Road on the Sankey Brook — 10.9 km away, highest on record 4.24m

98 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (65 at warning level or above), most recently 14 November 2025. Warnings cover flood areas, not individual addresses.

Recorded flood extents near the district (Environment Agency record):

Egremont (2023) — about 3.6 km from the centre
FOXB (2002) — about 1.6 km from the centre
NETH (2002) — about 3.6 km from the centre
ALDB (2000) — about 3.1 km from the centre

Records, not floods: no outline on the record is not evidence a place has not flooded.

🏠 Buying or renting in L35? The full property flood-risk report covers any postcode here — the official likelihood band, every recorded flood nearby with distances, warning history year by year, how the local rivers behave, and an insurance outlook, print-ready for £19. See what's in the report →

Flood risk in nearby postcode districts

L34 L36 L33 L37 L32 L38 L31 L39

Band = the worst likelihood band of any property in that postcode (EA Risk of Flooding from Rivers & Sea, defence-adjusted, area-level). Check any postcode in detail — or get the full £19 property report — at the property flood-risk report. © 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.