Does CH43 flood?

Yes — parts of the CH43 district carry real flood risk: 3 of its 13 at-risk postcodes reach the Environment Agency's High likelihood band. The CH43 postcode district covers Prenton, Bidston and St James, close to Upton (Wirral), Moreton, Hoylake, and surrounding villages in parts of Liverpool City Region and Cheshire West and Chester.

13 postcodes in the CH43 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 3 high, 1 medium, 6 low, 3 very 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 CH43 postcodes are at risk?

CH43 3DS up to High CH43 3DT up to High CH43 3DU up to High CH43 3BQ up to Medium CH43 3AP up to Low CH43 3BA up to Low CH43 3BB up to Low CH43 3BG up to Low CH43 3DZ up to Low CH43 3HQ up to Low CH43 7AA up to Very low CH43 7RF up to Very low CH43 7XG up to Very low

Rivers and flooding history near CH43

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

Greasby Road on the Arrowe Brook — 2.7 km away, highest on record 1.38m
Acton Lane on the Arrowe Brook — 4.1 km away, highest on record 1.61m
Davis Road on the River Birket — 4.2 km away, highest on record 3.27m
Fornalls Bridge on the River Birket — 6 km away, highest on record 1.57m

144 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (18 at warning level or above), most recently 5 April 2026. Warnings cover flood areas, not individual addresses.

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

ea01318_24_September_2012_Prenton_N_Chesh_Trad_Est (2012) — about 1.2 km from the centre
EA01318_05_September_2008_River_Fender_Woodchurch (2008) — about 3.2 km from the centre
EA01318_05_September_2008_River_Fender_Bidston (2008) — about 3.1 km from the centre
ARRO (2000) — about 3.4 km from the centre

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

🏠 Buying or renting in CH43? 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

CH42 CH44 CH41 CH45 CH46 CH47 CH48 CH49

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.