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Does BN11 flood?

Yes — parts of the BN11 district carry real flood risk: 100 of its 140 at-risk postcodes reach the Environment Agency's High likelihood band. The BN11 postcode district covers Selden, Heene, Marine, close to Ferring, Shoreham Beach, Upper Beeding, and surrounding villages in West Sussex.

140 postcodes in the BN11 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 100 high, 1 medium, 32 low, 7 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).

Free preview first · full report £19

Which BN11 postcodes are at risk?

BN11 1FE up to High BN11 1SX up to High BN11 1SY up to High BN11 2BJ up to High BN11 2BL up to High BN11 2EN up to High BN11 2EU up to High BN11 2EX up to High BN11 2EY up to High BN11 2EZ up to High BN11 2FG up to High BN11 2FJ up to High BN11 2FL up to High BN11 2HA up to High BN11 2HB up to High BN11 2HG up to High BN11 2HH up to High BN11 2HN up to High BN11 2HP up to High BN11 2LX up to High BN11 2NE up to High BN11 2NF up to High BN11 2NG up to High BN11 2PN up to High BN11 2PU up to High BN11 2QU up to High BN11 2QX up to High BN11 2SN up to High BN11 2SR up to High BN11 2SW up to High BN11 3AA up to High BN11 3AE up to High BN11 3AJ up to High BN11 3AL up to High BN11 3AP up to High BN11 3AR up to High BN11 3AW up to High BN11 3AX up to High BN11 3AY up to High BN11 3BA up to High BN11 3BD up to High BN11 3BE up to High BN11 3BG up to High BN11 3BN up to High BN11 3BS up to High BN11 3BW up to High BN11 3BZ up to High BN11 3DA up to High BN11 3DN up to High BN11 3DR up to High BN11 3DS up to High BN11 3DU up to High BN11 3DW up to High BN11 3EN up to High BN11 3ET up to High BN11 3FS up to High BN11 3HA up to High BN11 3HB up to High BN11 3HD up to High BN11 3HE up to High BN11 3HG up to High BN11 3LS up to High BN11 3LT up to High BN11 3LU up to High BN11 3LX up to High BN11 3ND up to High BN11 3NG up to High BN11 3NX up to High BN11 3PA up to High BN11 3PD up to High BN11 3PH up to High BN11 3PN up to High BN11 3PP up to High BN11 3PT up to High BN11 3PU up to High BN11 3PX up to High BN11 3PY up to High BN11 3QA up to High BN11 3QD up to High BN11 3QF up to High BN11 3QG up to High BN11 3QP up to High BN11 3QR up to High BN11 3QS up to High BN11 3QT up to High BN11 3QU up to High BN11 3QX up to High BN11 3QY up to High BN11 3QZ up to High BN11 3SA up to High BN11 5DG up to High BN11 5EF up to High BN11 5EG up to High BN11 5EH up to High BN11 5EL up to High BN11 5EX up to High BN11 5RA up to High BN11 5RG up to High BN11 5RQ up to High BN11 5SQ up to High BN11 3DL up to Medium BN11 1LZ up to Low BN11 1QN up to Low BN11 1TA up to Low BN11 1TD up to Low BN11 1YH up to Low BN11 1YJ up to Low BN11 2BQ up to Low BN11 2EJ up to Low BN11 2HJ up to Low BN11 3BL up to Low BN11 3BT up to Low BN11 3BX up to Low BN11 3BY up to Low BN11 3DE up to Low BN11 3DF up to Low BN11 3EP up to Low BN11 3ER up to Low BN11 3EZ up to Low BN11 3GB up to Low BN11 3GZ up to Low BN11 3HH up to Low BN11 3HN up to Low BN11 3HP up to Low BN11 3HW up to Low BN11 3JG up to Low BN11 3JJ up to Low BN11 3JS up to Low BN11 3LZ up to Low BN11 3NZ up to Low BN11 3QB up to Low BN11 4BH up to Low BN11 5SG up to Low BN11 3FJ up to Very low BN11 5EP up to Very low BN11 5EW up to Very low BN11 5SE up to Very low BN11 5SF up to Very low BN11 5SR up to Very low BN11 5SW up to Very low

Rivers and flooding history near BN11

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

72 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (7 at warning level or above), most recently 8 January 2026. Warnings cover flood areas, not individual addresses.

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

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

🏠 Buying or renting in BN11? 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

BN12 BN13 BN9 BN14 BN8 BN15 BN7 BN16

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.