Does PO8 flood?

Yes — parts of the PO8 district carry real flood risk: 4 of its 5 at-risk postcodes reach the Environment Agency's High likelihood band. The PO8 postcode district covers Clanfield, Rowlands Castle, close to Westbourne, Havant, Petersfield, and surrounding villages in parts of Hampshire and West Sussex.

5 postcodes in the PO8 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 4 high, 1 medium. 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 PO8 postcodes are at risk?

PO8 0AU up to High PO8 0BD up to High PO8 0BG up to High PO8 0YB up to High PO8 0AY up to Medium

Rivers and flooding history near PO8

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

Westbourne on the River Ems — 7.5 km away, highest on record 1.04m
WESTBOURNE GS — 7.5 km away
Crosslands Drive on the River Lavant — 7.6 km away, highest on record 1.43m
Havant on the Hermitage Stream — 8.3 km away, highest on record 6.69m

377 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 20 March 2026. Warnings cover flood areas, not individual addresses.

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

East Hampshire Aerial Photography Winter 13/14 (2014) — about 11.3 km from the centre
East Hampshire Winter 13/14 (2014) — about 8.6 km from the centre
Deanlane End, Finchdean, Winter 13/14 (2014) — about 2.5 km from the centre
Winter 2002/03gw_Lavant Stream_Aerial(1) (2002) — about 1.3 km from the centre

🏠 Buying or renting in PO8? 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

PO7 PO9 PO10 PO6 PO11 PO5 PO12 PO4

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.