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Does BN9 flood?

Yes — parts of the BN9 district carry real flood risk: 43 of its 113 at-risk postcodes reach the Environment Agency's High likelihood band. The BN9 postcode district covers Ouse Valley & Ringmer, Kingston, close to Newhaven, Lewes, and surrounding villages in East Sussex.

113 postcodes in the BN9 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 43 high, 42 medium, 21 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 BN9 postcodes are at risk?

BN9 0AD up to High BN9 0AG up to High BN9 0AL up to High BN9 0AY up to High BN9 0BA up to High BN9 0BN up to High BN9 0BT up to High BN9 0BX up to High BN9 0BY up to High BN9 0DD up to High BN9 0DH up to High BN9 0DJ up to High BN9 0DP up to High BN9 0DS up to High BN9 0DU up to High BN9 0EH up to High BN9 0EX up to High BN9 0FA up to High BN9 0FB up to High BN9 0FD up to High BN9 0FF up to High BN9 0HJ up to High BN9 0JA up to High BN9 0JD up to High BN9 0JE up to High BN9 0LA up to High BN9 0PP up to High BN9 0PR up to High BN9 0PS up to High BN9 9AH up to High BN9 9AP up to High BN9 9AX up to High BN9 9BA up to High BN9 9BB up to High BN9 9BL up to High BN9 9BP up to High BN9 9BX up to High BN9 9BY up to High BN9 9DA up to High BN9 9DH up to High BN9 9DN up to High BN9 9EL up to High BN9 9PL up to High BN9 0AA up to Medium BN9 0AB up to Medium BN9 0AP up to Medium BN9 0AS up to Medium BN9 0BB up to Medium BN9 0BF up to Medium BN9 0BG up to Medium BN9 0BH up to Medium BN9 0BP up to Medium BN9 0BU up to Medium BN9 0DA up to Medium BN9 0DE up to Medium BN9 0DF up to Medium BN9 0DQ up to Medium BN9 0DR up to Medium BN9 0DT up to Medium BN9 0ED up to Medium BN9 0ES up to Medium BN9 0EW up to Medium BN9 0FE up to Medium BN9 0FG up to Medium BN9 0FH up to Medium BN9 0FJ up to Medium BN9 0FL up to Medium BN9 0FN up to Medium BN9 0FP up to Medium BN9 0FQ up to Medium BN9 0HE up to Medium BN9 0LR up to Medium BN9 0PN up to Medium BN9 0PX up to Medium BN9 0PY up to Medium BN9 0QA up to Medium BN9 0QB up to Medium BN9 0QH up to Medium BN9 9AU up to Medium BN9 9AY up to Medium BN9 9BS up to Medium BN9 9DQ up to Medium BN9 9GG up to Medium BN9 9PW up to Medium BN9 9QD up to Medium BN9 0BZ up to Low BN9 0ER up to Low BN9 0HW up to Low BN9 9AD up to Low BN9 9AN up to Low BN9 9AT up to Low BN9 9BE up to Low BN9 9BQ up to Low BN9 9BT up to Low BN9 9BU up to Low BN9 9BW up to Low BN9 9DL up to Low BN9 9EJ up to Low BN9 9EN up to Low BN9 9EW up to Low BN9 9GB up to Low BN9 9GD up to Low BN9 9QE up to Low BN9 9QH up to Low BN9 9SS up to Low BN9 9ST up to Low BN9 0HL up to Very low BN9 0HN up to Very low BN9 0HP up to Very low BN9 0HS up to Very low BN9 0HU up to Very low BN9 0TP up to Very low BN9 9SU up to Very low

Rivers and flooding history near BN9

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

179 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (39 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):

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

🏠 Buying or renting in BN9? 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

BN8 BN11 BN7 BN12 BN6 BN13 BN5 BN14

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.