Does BH12 flood?

Only lower-likelihood flood risk is recorded in BH12: none of its 10 listed postcodes goes beyond the Low band. The BH12 postcode district covers Alderney & Bourne Valley, close to Bournemouth, Poole, Throop, and surrounding villages in parts of Bournemouth, Christchurch and Poole and Dorset.

10 postcodes in the BH12 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 10 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 BH12 postcodes are at risk?

BH12 4AW up to Low BH12 4AX up to Low BH12 4BD up to Low BH12 4BE up to Low BH12 4BG up to Low BH12 4BX up to Low BH12 4DE up to Low BH12 4DG up to Low BH12 4DQ up to Low BH12 5DU up to Low

Rivers and flooding history near BH12

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

Poole Harbour on the Dorset Coast — 5.6 km away, highest on record 1.64m
Throop on the River Stour — 6 km away, highest on record 1.91m
Wimborne on the River Stour — 6.6 km away, highest on record 2.00m
Hurn Court on the Moors River — 7.6 km away, highest on record 1.77m

239 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (180 at warning level or above), most recently 7 February 2026. Warnings cover flood areas, not individual addresses.

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

Flood Extents_Winter 2013 to 2014 (2014) — about 14.8 km from the centre
Stour Flood 104 (2009) — about 4.5 km from the centre
Stour Flood 106 (2009) — about 4.1 km from the centre
Dec 1989 Stour Corfe Mullen to Christchurch (1989) — about 4.2 km from the centre

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

🏠 Buying or renting in BH12? 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

BH11 BH13 BH10 BH14 BH15 BH16 BH8 BH17

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.