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Does KT3 flood?

Yes — parts of the KT3 district carry real flood risk: 17 of its 135 at-risk postcodes reach the Environment Agency's High likelihood band. The KT3 postcode district covers West Barnes, Green Lane & St James, Norbiton, close to New Malden, Worcester Park, Morden, and surrounding villages in parts of Greater London and Surrey.

135 postcodes in the KT3 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 17 high, 14 medium, 104 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 KT3 postcodes are at risk?

KT3 4LU up to High KT3 4PB up to High KT3 4PJ up to High KT3 5HB up to High KT3 6HR up to High KT3 6HZ up to High KT3 6JA up to High KT3 6JB up to High KT3 6JD up to High KT3 6JY up to High KT3 6LA up to High KT3 6LF up to High KT3 6LP up to High KT3 6LR up to High KT3 6LS up to High KT3 6LY up to High KT3 6NE up to High KT3 4LG up to Medium KT3 4LY up to Medium KT3 4NE up to Medium KT3 4PH up to Medium KT3 4PP up to Medium KT3 4PR up to Medium KT3 4PW up to Medium KT3 5BX up to Medium KT3 5DA up to Medium KT3 6EN up to Medium KT3 6NG up to Medium KT3 6PD up to Medium KT3 6PE up to Medium KT3 6PF up to Medium KT3 3FG up to Low KT3 3FJ up to Low KT3 3FN up to Low KT3 3JD up to Low KT3 3LJ up to Low KT3 3ND up to Low KT3 3NP up to Low KT3 3NS up to Low KT3 3NT up to Low KT3 3NU up to Low KT3 3NW up to Low KT3 3RD up to Low KT3 3RF up to Low KT3 3RJ up to Low KT3 3RL up to Low KT3 3RP up to Low KT3 3RQ up to Low KT3 3RR up to Low KT3 3RS up to Low KT3 3RU up to Low KT3 3RX up to Low KT3 3SS up to Low KT3 3SX up to Low KT3 3TB up to Low KT3 3TE up to Low KT3 3TF up to Low KT3 3TG up to Low KT3 4AL up to Low KT3 4AR up to Low KT3 4AT up to Low KT3 4AW up to Low KT3 4LB up to Low KT3 4LE up to Low KT3 4NA up to Low KT3 4NB up to Low KT3 4ND up to Low KT3 4NF up to Low KT3 4NL up to Low KT3 4NP up to Low KT3 4NW up to Low KT3 4PA up to Low KT3 4PS up to Low KT3 4PT up to Low KT3 4PU up to Low KT3 4RP up to Low KT3 4RS up to Low KT3 4RW up to Low KT3 5AQ up to Low KT3 5BE up to Low KT3 5BU up to Low KT3 5BZ up to Low KT3 5DB up to Low KT3 5DD up to Low KT3 5DE up to Low KT3 5DF up to Low KT3 5EY up to Low KT3 5EZ up to Low KT3 5HA up to Low KT3 5HS up to Low KT3 5HT up to Low KT3 5HU up to Low KT3 5QP up to Low KT3 6EL up to Low KT3 6EP up to Low KT3 6ER up to Low KT3 6ES up to Low KT3 6ET up to Low KT3 6EU up to Low KT3 6EW up to Low KT3 6EX up to Low KT3 6EY up to Low KT3 6EZ up to Low KT3 6HA up to Low KT3 6HB up to Low KT3 6HF up to Low KT3 6HP up to Low KT3 6HS up to Low KT3 6HY up to Low KT3 6JE up to Low KT3 6JF up to Low KT3 6JJ up to Low KT3 6JL up to Low KT3 6JP up to Low KT3 6JR up to Low KT3 6JT up to Low KT3 6JW up to Low KT3 6JX up to Low KT3 6JZ up to Low KT3 6LB up to Low KT3 6LT up to Low KT3 6LU up to Low KT3 6LX up to Low KT3 6NA up to Low KT3 6NB up to Low KT3 6NF up to Low KT3 6NQ up to Low KT3 6NX up to Low KT3 6PA up to Low KT3 6PB up to Low KT3 6QF up to Low KT3 6QG up to Low KT3 6QL up to Low KT3 6QP up to Low KT3 6QR up to Low

Rivers and flooding history near KT3

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

1,463 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (34 at warning level or above), most recently 29 September 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 KT3? 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

KT2 KT4 KT1 KT5 KT6 KT7 KT8 KT9

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.