Does SO23 flood?

Yes — parts of the SO23 district carry real flood risk: 20 of its 59 at-risk postcodes reach the Environment Agency's High likelihood band. The SO23 postcode district covers St Michael, St Bartholomew, The Worthys, close to Winchester, Easton, Colden Common, and surrounding villages in Hampshire.

59 postcodes in the SO23 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 20 high, 5 medium, 29 low, 5 very 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 SO23 postcodes are at risk?

SO23 7LA up to High SO23 7LD up to High SO23 7LE up to High SO23 7LF up to High SO23 7LG up to High SO23 7LJ up to High SO23 8DL up to High SO23 8DX up to High SO23 8DZ up to High SO23 9AL up to High SO23 9AY up to High SO23 9BA up to High SO23 9BD up to High SO23 9BG up to High SO23 9JX up to High SO23 9LG up to High SO23 9LH up to High SO23 9LN up to High SO23 9NG up to High SO23 9RU up to High SO23 7DD up to Medium SO23 8AE up to Medium SO23 8DJ up to Medium SO23 9AZ up to Medium SO23 9BH up to Medium SO23 0EJ up to Low SO23 0ES up to Low SO23 0EW up to Low SO23 7JD up to Low SO23 7JL up to Low SO23 7LQ up to Low SO23 8AF up to Low SO23 8AQ up to Low SO23 8BQ up to Low SO23 8DP up to Low SO23 8DQ up to Low SO23 8DR up to Low SO23 8DS up to Low SO23 8DU up to Low SO23 8ED up to Low SO23 8EG up to Low SO23 8QX up to Low SO23 8QY up to Low SO23 9AX up to Low SO23 9BB up to Low SO23 9BE up to Low SO23 9GH up to Low SO23 9LA up to Low SO23 9LL up to Low SO23 9LR up to Low SO23 9LT up to Low SO23 9NA up to Low SO23 9NX up to Low SO23 9QG up to Low SO23 7TB up to Very low SO23 8DB up to Very low SO23 8DD up to Very low SO23 8DG up to Very low SO23 8HW up to Very low

Rivers and flooding history near SO23

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

248 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (41 at warning level or above), most recently 30 March 2026. Warnings cover flood areas, not individual addresses.

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

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

🏠 Buying or renting in SO23? 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

SO22 SO24 SO21 SO20 SO19 SO18 SO17 SO16

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.