Does BN17 flood?

Yes — parts of the BN17 district carry real flood risk: 34 of its 189 at-risk postcodes reach the Environment Agency's High likelihood band. The BN17 postcode district covers River, Courtwick with Toddington, Beach, Yapton, close to Littlehampton, Ferring, Barnham, and surrounding villages in West Sussex.

189 postcodes in the BN17 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 34 high, 9 medium, 106 low, 40 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 BN17 postcodes are at risk?

BN17 5DE up to High BN17 5DL up to High BN17 5DQ up to High BN17 5DS up to High BN17 5DW up to High BN17 5FD up to High BN17 5GW up to High BN17 5LH up to High BN17 5LP up to High BN17 5NT up to High BN17 5RN up to High BN17 6PP up to High BN17 6PZ up to High BN17 7DE up to High BN17 7GT up to High BN17 7PF up to High BN17 7PT up to High BN17 7PU up to High BN17 7PX up to High BN17 7PY up to High BN17 7PZ up to High BN17 7QA up to High BN17 7QB up to High BN17 7QD up to High BN17 7QE up to High BN17 7QJ up to High BN17 7QS up to High BN17 7RA up to High BN17 7RB up to High BN17 7RF up to High BN17 7RY up to High BN17 7TF up to High BN17 7TG up to High BN17 7TH up to High BN17 5LG up to Medium BN17 5QT up to Medium BN17 7LD up to Medium BN17 7LE up to Medium BN17 7LG up to Medium BN17 7LQ up to Medium BN17 7QT up to Medium BN17 7RD up to Medium BN17 7RG up to Medium BN17 5AB up to Low BN17 5AG up to Low BN17 5AH up to Low BN17 5AJ up to Low BN17 5AP up to Low BN17 5AR up to Low BN17 5AS up to Low BN17 5AT up to Low BN17 5AU up to Low BN17 5AW up to Low BN17 5AX up to Low BN17 5BA up to Low BN17 5BB up to Low BN17 5BF up to Low BN17 5BG up to Low BN17 5BH up to Low BN17 5BJ up to Low BN17 5BL up to Low BN17 5BN up to Low BN17 5BP up to Low BN17 5BY up to Low BN17 5BZ up to Low BN17 5DA up to Low BN17 5DD up to Low BN17 5DF up to Low BN17 5DP up to Low BN17 5DT up to Low BN17 5DU up to Low BN17 5DX up to Low BN17 5EL up to Low BN17 5FB up to Low BN17 5GB up to Low BN17 5HJ up to Low BN17 5HL up to Low BN17 5HN up to Low BN17 5HP up to Low BN17 5HR up to Low BN17 5HS up to Low BN17 5HT up to Low BN17 5HW up to Low BN17 5HY up to Low BN17 5HZ up to Low BN17 5JD up to Low BN17 5JF up to Low BN17 5JG up to Low BN17 5JH up to Low BN17 5JJ up to Low BN17 5JL up to Low BN17 5JQ up to Low BN17 5JW up to Low BN17 5JY up to Low BN17 5JZ up to Low BN17 5LA up to Low BN17 5LE up to Low BN17 5LJ up to Low BN17 5LL up to Low BN17 5LQ up to Low BN17 5LU up to Low BN17 5LW up to Low BN17 5RA up to Low BN17 5RR up to Low BN17 5SF up to Low BN17 5TA up to Low BN17 5TE up to Low BN17 6AT up to Low BN17 6AU up to Low BN17 6AW up to Low BN17 6AX up to Low BN17 6BP up to Low BN17 6LG up to Low BN17 6LQ up to Low BN17 6NY up to Low BN17 6PR up to Low BN17 6PY up to Low BN17 6QU up to Low BN17 7AT up to Low BN17 7AU up to Low BN17 7BB up to Low BN17 7BS up to Low BN17 7DH up to Low BN17 7DW up to Low BN17 7DY up to Low BN17 7DZ up to Low BN17 7EA up to Low BN17 7EB up to Low BN17 7EE up to Low BN17 7EF up to Low BN17 7EH up to Low BN17 7EN up to Low BN17 7ER up to Low BN17 7FW up to Low BN17 7GA up to Low BN17 7GQ up to Low BN17 7HA up to Low BN17 7HB up to Low BN17 7HD up to Low BN17 7HE up to Low BN17 7HG up to Low BN17 7HH up to Low BN17 7HN up to Low BN17 7HQ up to Low BN17 7LL up to Low BN17 7PA up to Low BN17 7QU up to Low BN17 7QZ up to Low BN17 7RE up to Low BN17 5AD up to Very low BN17 5AF up to Very low BN17 5AZ up to Very low BN17 5BD up to Very low BN17 5BQ up to Very low BN17 5DJ up to Very low BN17 5DZ up to Very low BN17 5EA up to Very low BN17 5ED up to Very low BN17 5EG up to Very low BN17 5EH up to Very low BN17 5EJ up to Very low BN17 5JA up to Very low BN17 5JP up to Very low BN17 5JR up to Very low BN17 5JS up to Very low BN17 5JU up to Very low BN17 5LB up to Very low BN17 5LD up to Very low BN17 5LF up to Very low BN17 5LR up to Very low BN17 5LS up to Very low BN17 5LX up to Very low BN17 5LZ up to Very low BN17 5NA up to Very low BN17 5NG up to Very low BN17 5NH up to Very low BN17 5NJ up to Very low BN17 5NL up to Very low BN17 5NP up to Very low BN17 5NQ up to Very low BN17 5RE up to Very low BN17 5RX up to Very low BN17 5TH up to Very low BN17 7AD up to Very low BN17 7PS up to Very low BN17 7QL up to Very low BN17 7TA up to Very low BN17 7TB up to Very low BN17 7TD up to Very low

Rivers and flooding history near BN17

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

405 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (36 at warning level or above), most recently 26 August 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 BN17? 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

BN16 BN18 BN15 BN14 BN20 BN13 BN21 BN12

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.