Does TW9 flood?

Yes — parts of the TW9 district carry real flood risk: 12 of its 137 at-risk postcodes reach the Environment Agency's High likelihood band. The TW9 postcode district covers Kew, South Richmond, North Richmond, close to Brentford, Richmond, Barnes, and surrounding villages in parts of England and Surrey.

137 postcodes in the TW9 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 12 high, 8 low, 117 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 TW9 postcodes are at risk?

TW9 1NR up to High TW9 1NS up to High TW9 1NT up to High TW9 1NU up to High TW9 1PQ up to High TW9 1TH up to High TW9 1TJ up to High TW9 2QJ up to High TW9 2SB up to High TW9 3AN up to High TW9 3BE up to High TW9 3BG up to High TW9 1EH up to Low TW9 1NL up to Low TW9 1NN up to Low TW9 1NP up to Low TW9 1NW up to Low TW9 1PG up to Low TW9 1TQ up to Low TW9 4LN up to Low TW9 3AA up to Very low TW9 3AE up to Very low TW9 3AF up to Very low TW9 3AG up to Very low TW9 3AH up to Very low TW9 3AL up to Very low TW9 3AP up to Very low TW9 3AQ up to Very low TW9 3AS up to Very low TW9 3AT up to Very low TW9 3AU up to Very low TW9 3AX up to Very low TW9 3AY up to Very low TW9 3AZ up to Very low TW9 3BB up to Very low TW9 3BD up to Very low TW9 3BH up to Very low TW9 3BL up to Very low TW9 3BQ up to Very low TW9 3BS up to Very low TW9 3BT up to Very low TW9 3BU up to Very low TW9 3BW up to Very low TW9 3BX up to Very low TW9 3BY up to Very low TW9 3BZ up to Very low TW9 3DA up to Very low TW9 3DB up to Very low TW9 3DD up to Very low TW9 3DE up to Very low TW9 3DF up to Very low TW9 3DG up to Very low TW9 3DH up to Very low TW9 3DQ up to Very low TW9 3DT up to Very low TW9 3DU up to Very low TW9 3DW up to Very low TW9 3DZ up to Very low TW9 3EA up to Very low TW9 3HA up to Very low TW9 3HB up to Very low TW9 3HD up to Very low TW9 3HE up to Very low TW9 3HF up to Very low TW9 3HH up to Very low TW9 3HJ up to Very low TW9 3HL up to Very low TW9 3HQ up to Very low TW9 3HT up to Very low TW9 3HW up to Very low TW9 3JB up to Very low TW9 3JD up to Very low TW9 3JE up to Very low TW9 3JF up to Very low TW9 3JG up to Very low TW9 3JJ up to Very low TW9 3JQ up to Very low TW9 4AA up to Very low TW9 4AB up to Very low TW9 4AD up to Very low TW9 4AE up to Very low TW9 4AF up to Very low TW9 4AH up to Very low TW9 4AL up to Very low TW9 4AN up to Very low TW9 4AP up to Very low TW9 4AR up to Very low TW9 4AS up to Very low TW9 4AT up to Very low TW9 4AW up to Very low TW9 4BA up to Very low TW9 4BB up to Very low TW9 4BD up to Very low TW9 4BE up to Very low TW9 4BF up to Very low TW9 4BG up to Very low TW9 4BH up to Very low TW9 4BP up to Very low TW9 4BQ up to Very low TW9 4BS up to Very low TW9 4BT up to Very low TW9 4BU up to Very low TW9 4BX up to Very low TW9 4BY up to Very low TW9 4BZ up to Very low TW9 4DA up to Very low TW9 4DB up to Very low TW9 4DD up to Very low TW9 4DE up to Very low TW9 4DF up to Very low TW9 4DG up to Very low TW9 4DH up to Very low TW9 4DJ up to Very low TW9 4DL up to Very low TW9 4DN up to Very low TW9 4DP up to Very low TW9 4DQ up to Very low TW9 4DR up to Very low TW9 4DS up to Very low TW9 4DT up to Very low TW9 4DU up to Very low TW9 4DX up to Very low TW9 4DZ up to Very low TW9 4EE up to Very low TW9 4EF up to Very low TW9 4EG up to Very low TW9 4EJ up to Very low TW9 4EN up to Very low TW9 4EQ up to Very low TW9 4ET up to Very low TW9 4EU up to Very low TW9 4EW up to Very low TW9 4EZ up to Very low TW9 4FA up to Very low TW9 4FD up to Very low TW9 4FE up to Very low TW9 4FF up to Very low

Rivers and flooding history near TW9

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

1,354 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (30 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 TW9? 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

TW10 TW8 TW11 TW7 TW12 TW13 TW5 TW14

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.