Does BN42 flood?

Parts of the BN42 district carry moderate flood risk: 2 of its 7 at-risk postcodes reach the Environment Agency's Medium likelihood band. The BN42 postcode district covers Eastbrook, Southwick Green, close to Shoreham Beach, Upper Beeding, and surrounding villages in West Sussex.

7 postcodes in the BN42 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 2 medium, 5 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 BN42 postcodes are at risk?

BN42 4DP up to Medium BN42 4EN up to Medium BN42 4AW up to Low BN42 4BW up to Low BN42 4DH up to Low BN42 4DN up to Low BN42 4EG up to Low

Rivers and flooding history near BN42

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

SAKEHAM GS — 14.2 km away
Ferring Outfall on the River Arun — 15.4 km away, highest on record 2.91m
Bell Lane Grill on the Winterbourne Stream — 17.3 km away, highest on record 5.39m
Barcombe Gates on the River Ouse — 21.6 km away, highest on record 6.60m

90 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (8 at warning level or above), most recently 6 March 2026. Warnings cover flood areas, not individual addresses.

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

Winter 13/14 East Hampshire Aerial Photography (2014) — about 14.6 km from the centre
LANCING 1992 (1992) — about 4.5 km from the centre
PORTSLADE BY SEA 1976 (1976) — about 2.6 km from the centre
SHOREHAM BY SEA (1960) — about 0.9 km from the centre

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

🏠 Buying or renting in BN42? 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

BN41 BN43 BN44 BN27 BN26 BN25 BN24 BN23

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.