Does KT23 flood?

Yes — parts of the KT23 district carry real flood risk: 4 of its 7 at-risk postcodes reach the Environment Agency's High likelihood band. The KT23 postcode district covers Bookham West, close to Leatherhead, Stoke D'abernon, Dorking, and surrounding villages in parts of Surrey and England.

7 postcodes in the KT23 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 4 high, 1 medium, 2 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 KT23 postcodes are at risk?

KT23 3BX up to High KT23 3HB up to High KT23 3HN up to High KT23 3HW up to High KT23 3AT up to Medium KT23 3HD up to Low KT23 3JG up to Low

Rivers and flooding history near KT23

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

Leatherhead on the River Mole — 3.6 km away, highest on record 3.74m
Downside Bridge on the River Mole — 4.6 km away, highest on record 3.46m
Send on the East Clandon Stream — 8.4 km away, highest on record 1.76m
Brooklands on the River Wey — 8.7 km away, highest on record 4.04m

243 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (43 at warning level or above), most recently 15 February 2026. Warnings cover flood areas, not individual addresses.

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

LeatherheadSTW_Dec2013 (2013) — about 3.2 km from the centre
LeatherheadDS1_Dec2013 (2013) — about 3.1 km from the centre
February 1990 flooding — about 3 km from the centre
September 1968 flooding — about 4 km from the centre

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

🏠 Buying or renting in KT23? 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

KT22 KT24 KT21 KT19 KT18 KT17 KT16 KT15

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.