Does RH17 flood?

Yes — parts of the RH17 district carry real flood risk: 7 of its 12 at-risk postcodes reach the Environment Agency's High likelihood band. The RH17 postcode district covers Cuckfield, Bolney & Ansty, close to Ardingly, Lindfield, Scayne's Hill, and surrounding villages in parts of West Sussex and East Sussex.

12 postcodes in the RH17 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 7 high, 1 medium, 4 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 RH17 postcodes are at risk?

RH17 5AE up to High RH17 6EW up to High RH17 6QT up to High RH17 6QZ up to High RH17 7EL up to High RH17 7NG up to High RH17 7NP up to High RH17 6SQ up to Medium RH17 5RN up to Low RH17 6AL up to Low RH17 6AP up to Low RH17 7EA up to Low

Rivers and flooding history near RH17

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

Ardingly on the River Ouse — 1.9 km away, highest on record 1.89m
ARDINGLY OUSE GS — 2 km away
ARDINGLY SHELLBROOK GS — 2.3 km away
Lindfield Bridge on the River Ouse — 3.3 km away, highest on record 2.25m

178 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.

No recorded flood extent is mapped near this district's centre. No recorded outline near the district means no flood was mapped here, which is not evidence none happened: the Environment Agency mapped only some floods, mapping effort rose sharply after about 2000, and surface-water flooding is largely absent from this record.

🏠 Buying or renting in RH17? 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

RH16 RH18 RH15 RH19 RH14 RH20 RH13 RH12

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.