Does HP12 flood?

Yes — parts of the HP12 district carry real flood risk: 1 of its 10 at-risk postcodes reach the Environment Agency's High likelihood band. The HP12 postcode district covers Castlefield & Oakridge, Sands, close to High Wycombe, Marlow, Wye, and surrounding villages in parts of Buckinghamshire and Windsor and Maidenhead.

10 postcodes in the HP12 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 1 high, 9 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 HP12 postcodes are at risk?

HP12 3AH up to High HP12 3AB up to Low HP12 3AX up to Low HP12 3AZ up to Low HP12 3BA up to Low HP12 3BG up to Low HP12 3BQ up to Low HP12 3BW up to Low HP12 3BX up to Low HP12 3DJ up to Low

Rivers and flooding history near HP12

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

Ray Farm on the Groundwater Level — 3.7 km away, highest on record 56.38m
Piddington on the Groundwater Level — 6.1 km away, highest on record 107.65m
Bourne End on the River Wye — 8.3 km away, highest on record 0.47m
Missenden on the River Misbourne — 9.5 km away, highest on record 0.46m

82 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (22 at warning level or above), most recently 27 February 2026. Warnings cover flood areas, not individual addresses.

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

Winter 2013/2014 (2013) — about 11.9 km from the centre

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

🏠 Buying or renting in HP12? 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

HP11 HP13 HP10 HP14 HP16 HP8 HP17 HP7

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.