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Does SO20 flood?

Yes — parts of the SO20 district carry real flood risk: 27 of its 48 at-risk postcodes reach the Environment Agency's High likelihood band. The SO20 postcode district covers Mid Test, Harewood, close to Stockbridge, Bossington, Kings Somborne, and surrounding villages in Hampshire.

48 postcodes in the SO20 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 27 high, 11 medium, 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).

Free preview first · full report £19

Which SO20 postcodes are at risk?

SO20 6AX up to High SO20 6DG up to High SO20 6DP up to High SO20 6EH up to High SO20 6ES up to High SO20 6ET up to High SO20 6EU up to High SO20 6EX up to High SO20 6EY up to High SO20 6HB up to High SO20 6HE up to High SO20 6HF up to High SO20 6JB up to High SO20 6JG up to High SO20 6NA up to High SO20 6NG up to High SO20 6NZ up to High SO20 6PL up to High SO20 6QR up to High SO20 8AZ up to High SO20 8BD up to High SO20 8EQ up to High SO20 8ET up to High SO20 8EW up to High SO20 8EX up to High SO20 8HN up to High SO20 8HP up to High SO20 6AZ up to Medium SO20 6BB up to Medium SO20 6EF up to Medium SO20 6HG up to Medium SO20 6PF up to Medium SO20 6PU up to Medium SO20 6PW up to Medium SO20 6PX up to Medium SO20 6PZ up to Medium SO20 8AY up to Medium SO20 8HR up to Medium SO20 6BD up to Low SO20 6BE up to Low SO20 6HD up to Low SO20 6NB up to Low SO20 6PA up to Low SO20 6RP up to Low SO20 8EL up to Low SO20 8EN up to Low SO20 8HS up to Low SO20 8HU up to Low

Rivers and flooding history near SO20

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

121 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (40 at warning level or above), most recently 10 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 SO20? 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

SO19 SO21 SO18 SO22 SO17 SO23 SO16 SO24

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.