Does SO43 flood?

Yes — parts of the SO43 district carry real flood risk: 7 of its 8 at-risk postcodes reach the Environment Agency's High likelihood band. The SO43 postcode district covers Ashurst, Bramshaw, Copythorne & Netley Marsh, Lyndhurst & Minstead, close to Ashurst Bridge, Ower, Totton, and surrounding villages in parts of Hampshire and England.

8 postcodes in the SO43 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 7 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).

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Which SO43 postcodes are at risk?

SO43 7BR up to High SO43 7BS up to High SO43 7BW up to High SO43 7HE up to High SO43 7HF up to High SO43 7JJ up to High SO43 7JL up to High SO43 7JA up to Medium

Rivers and flooding history near SO43

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

Ashurst Bridge on the Bartley Water — 5.3 km away, highest on record 6.76m
OWER GS — 6.4 km away
Ower on the River Blackwater — 6.5 km away, highest on record 3.26m
M27 TV1 — 7.1 km away

340 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (90 at warning level or above), most recently 19 February 2026. Warnings cover flood areas, not individual addresses.

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

WInter2000/01g_Cadnam River_Wittensford(1) (2001) — about 1.8 km from the centre
WInter2000/01g_Cadnam River_Brook(1) (2001) — about 2.7 km from the centre
WInter2000/01g_Cadnam River_Cadnam(2) (2001) — about 1.6 km from the centre
WInter2000/01g_Cadnam River_Cadnam(4) (2001) — about 1.6 km from the centre

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

🏠 Buying or renting in SO43? 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

SO42 SO41 SO45 SO40 SO50 SO51 SO52 SO53

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.