Does KT12 flood?

Yes — parts of the KT12 district carry real flood risk: 16 of its 193 at-risk postcodes reach the Environment Agency's High likelihood band. The KT12 postcode district covers Walton North, Walton South, Esher, Hersham Village, close to Walton-On-Thames, Sunbury, Weybridge, and surrounding villages in parts of Surrey and Greater London.

193 postcodes in the KT12 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 16 high, 52 medium, 118 low, 7 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 KT12 postcodes are at risk?

KT12 1QP up to High KT12 1QW up to High KT12 2BG up to High KT12 2DE up to High KT12 2JE up to High KT12 3AU up to High KT12 3BB up to High KT12 3BJ up to High KT12 3BL up to High KT12 3EA up to High KT12 3EB up to High KT12 3FD up to High KT12 3FE up to High KT12 3JQ up to High KT12 3LG up to High KT12 3LJ up to High KT12 2AA up to Medium KT12 2AB up to Medium KT12 2AD up to Medium KT12 2AJ up to Medium KT12 2AL up to Medium KT12 2AW up to Medium KT12 2AX up to Medium KT12 2AY up to Medium KT12 2AZ up to Medium KT12 2BA up to Medium KT12 2BB up to Medium KT12 2BD up to Medium KT12 2BE up to Medium KT12 2BF up to Medium KT12 2BJ up to Medium KT12 2BL up to Medium KT12 2BN up to Medium KT12 2BU up to Medium KT12 2BW up to Medium KT12 2BX up to Medium KT12 2DA up to Medium KT12 2DB up to Medium KT12 2DD up to Medium KT12 2HX up to Medium KT12 2HZ up to Medium KT12 2JA up to Medium KT12 2JB up to Medium KT12 2JD up to Medium KT12 2JN up to Medium KT12 2JQ up to Medium KT12 2LW up to Medium KT12 3AP up to Medium KT12 3AS up to Medium KT12 3AT up to Medium KT12 3AY up to Medium KT12 3AZ up to Medium KT12 3BD up to Medium KT12 3DT up to Medium KT12 3EJ up to Medium KT12 3LF up to Medium KT12 3LN up to Medium KT12 3LP up to Medium KT12 3LQ up to Medium KT12 3LR up to Medium KT12 3LU up to Medium KT12 3LW up to Medium KT12 3NX up to Medium KT12 3PF up to Medium KT12 3PP up to Medium KT12 3RE up to Medium KT12 3RY up to Medium KT12 3TD up to Medium KT12 2AE up to Low KT12 2AF up to Low KT12 2AH up to Low KT12 2AN up to Low KT12 2AT up to Low KT12 2AU up to Low KT12 2BP up to Low KT12 2BS up to Low KT12 2BT up to Low KT12 2DF up to Low KT12 2DG up to Low KT12 2DH up to Low KT12 2DJ up to Low KT12 2DP up to Low KT12 2DQ up to Low KT12 2DS up to Low KT12 2DX up to Low KT12 2EA up to Low KT12 2EQ up to Low KT12 2EU up to Low KT12 2EX up to Low KT12 2HB up to Low KT12 2HD up to Low KT12 2HG up to Low KT12 2HH up to Low KT12 2HJ up to Low KT12 2HL up to Low KT12 2HN up to Low KT12 2HP up to Low KT12 2HQ up to Low KT12 2HS up to Low KT12 2HT up to Low KT12 2HU up to Low KT12 2HW up to Low KT12 2HY up to Low KT12 2JG up to Low KT12 2LD up to Low KT12 2LS up to Low KT12 2LT up to Low KT12 2PF up to Low KT12 2SA up to Low KT12 2SD up to Low KT12 2SE up to Low KT12 3AR up to Low KT12 3AX up to Low KT12 3BA up to Low KT12 3BE up to Low KT12 3DR up to Low KT12 3DS up to Low KT12 3DU up to Low KT12 3EG up to Low KT12 3EL up to Low KT12 3EQ up to Low KT12 3ES up to Low KT12 3LS up to Low KT12 3NG up to Low KT12 3NH up to Low KT12 3NQ up to Low KT12 3PH up to Low KT12 3PN up to Low KT12 3PW up to Low KT12 3QD up to Low KT12 3QH up to Low KT12 3QJ up to Low KT12 3QL up to Low KT12 3QN up to Low KT12 3QP up to Low KT12 3QR up to Low KT12 3QS up to Low KT12 3QT up to Low KT12 3QU up to Low KT12 3QW up to Low KT12 3QX up to Low KT12 3QY up to Low KT12 3QZ up to Low KT12 3RB up to Low KT12 3RD up to Low KT12 3RG up to Low KT12 3RH up to Low KT12 3RJ up to Low KT12 3RL up to Low KT12 3RN up to Low KT12 3RP up to Low KT12 3RQ up to Low KT12 3RX up to Low KT12 4BG up to Low KT12 4BU up to Low KT12 4BY up to Low KT12 4EP up to Low KT12 4LE up to Low KT12 4LF up to Low KT12 4LG up to Low KT12 4LH up to Low KT12 4LJ up to Low KT12 4LL up to Low KT12 4LN up to Low KT12 4LP up to Low KT12 4LQ up to Low KT12 4LR up to Low KT12 4LW up to Low KT12 4NQ up to Low KT12 4NY up to Low KT12 4PE up to Low KT12 4PF up to Low KT12 4PH up to Low KT12 4PJ up to Low KT12 4PL up to Low KT12 4PN up to Low KT12 4PP up to Low KT12 4PW up to Low KT12 4QJ up to Low KT12 4QU up to Low KT12 4QX up to Low KT12 4QZ up to Low KT12 4RA up to Low KT12 4RB up to Low KT12 4SG up to Low KT12 4SQ up to Low KT12 4HQ up to Very low KT12 4LX up to Very low KT12 4LY up to Very low KT12 4NB up to Very low KT12 4ND up to Very low KT12 4NE up to Very low KT12 4NG up to Very low

Rivers and flooding history near KT12

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

516 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (108 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 KT12? 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

KT11 KT13 KT10 KT14 KT15 KT9 KT16 KT8

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.