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Does TW7 flood?

Yes — parts of the TW7 district carry real flood risk: 6 of its 34 at-risk postcodes reach the Environment Agency's High likelihood band. The TW7 postcode district covers Isleworth, St Margarets & North Twickenham, Syon & Brentford Lock, Hounslow South, close to Richmond, Brentford, Twickenham, and surrounding villages in parts of England and Surrey.

34 postcodes in the TW7 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 6 high, 2 medium, 20 low, 6 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 TW7 postcodes are at risk?

TW7 6DE up to High TW7 6NL up to High TW7 6PD up to High TW7 7BL up to High TW7 7BU up to High TW7 7BY up to High TW7 6AE up to Medium TW7 6AY up to Medium TW7 6AQ up to Low TW7 6BE up to Low TW7 6BG up to Low TW7 6BL up to Low TW7 6BZ up to Low TW7 6DA up to Low TW7 6GU up to Low TW7 6RJ up to Low TW7 6RS up to Low TW7 6XB up to Low TW7 7BW up to Low TW7 7BZ up to Low TW7 7EP up to Low TW7 7HB up to Low TW7 7HG up to Low TW7 7HH up to Low TW7 7HP up to Low TW7 7JA up to Low TW7 7LA up to Low TW7 7XB up to Low TW7 6BD up to Very low TW7 6BS up to Very low TW7 6BU up to Very low TW7 7EQ up to Very low TW7 7HD up to Very low TW7 7JQ up to Very low

Rivers and flooding history near TW7

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

1,423 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (43 at warning level or above), most recently 15 August 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 TW7? 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

TW8 TW5 TW9 TW10 TW4 TW11 TW12 TW2

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.