Does SO19 flood?

Yes — parts of the SO19 district carry real flood risk: 13 of its 20 at-risk postcodes reach the Environment Agency's High likelihood band. The SO19 postcode district covers Woolston, Peartree, Sholing, close to Swaythling, Southampton, Millbrook, and surrounding villages in parts of Hampshire and England.

20 postcodes in the SO19 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 13 high, 3 medium, 3 low, 1 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).

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Which SO19 postcodes are at risk?

SO19 7BN up to High SO19 7GA up to High SO19 7GB up to High SO19 7HS up to High SO19 8SY up to High SO19 9EF up to High SO19 9FL up to High SO19 9FN up to High SO19 9GH up to High SO19 9RA up to High SO19 9SH up to High SO19 9UR up to High SO19 9US up to High SO19 7RF up to Medium SO19 9DX up to Medium SO19 9EG up to Medium SO19 8FQ up to Low SO19 8PL up to Low SO19 9TE up to Low SO19 9UJ up to Very low

Rivers and flooding history near SO19

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

Riverside Park on the River Itchen — 4.5 km away, highest on record 2.19m
Shirley Pond on the Tanners Brook — 5.6 km away, highest on record 14.43m
Millbrook on the Tanners Brook — 5.7 km away, highest on record 0.70m
Hobb Lane on the River Hamble — 5.9 km away, highest on record 21.96m

305 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (65 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):

10/03/2008 Prospect Place (2008) — about 3.1 km from the centre
10/03/2008 The Promenade (2008) — about 3.2 km from the centre
10/03/2008 Priory Road (2008) — about 2.9 km from the centre
24/12/1999_Lower Itchen (tidal)_Northam(1) (1999) — about 1.7 km from the centre

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

🏠 Buying or renting in SO19? 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

SO18 SO20 SO17 SO21 SO16 SO22 SO15 SO23

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.