Does TW15 flood?

Yes — parts of the TW15 district carry real flood risk: 3 of its 236 at-risk postcodes reach the Environment Agency's High likelihood band. The TW15 postcode district covers Ashford Common, Ashford East, Ashford Town, close to Staines, Laleham, Sunbury, and surrounding villages in parts of Surrey and England.

236 postcodes in the TW15 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 3 high, 4 medium, 119 low, 110 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 TW15 postcodes are at risk?

TW15 3PW up to High TW15 3RF up to High TW15 3RJ up to High TW15 3NJ up to Medium TW15 3PN up to Medium TW15 3RE up to Medium TW15 3RL up to Medium TW15 1DA up to Low TW15 1HN up to Low TW15 1JB up to Low TW15 1JD up to Low TW15 1JE up to Low TW15 1JF up to Low TW15 1JG up to Low TW15 1JH up to Low TW15 1JJ up to Low TW15 1JL up to Low TW15 1JQ up to Low TW15 1LB up to Low TW15 1LD up to Low TW15 1LE up to Low TW15 1LF up to Low TW15 1LG up to Low TW15 1LH up to Low TW15 1LJ up to Low TW15 1LP up to Low TW15 1LQ up to Low TW15 1LR up to Low TW15 1LW up to Low TW15 1QA up to Low TW15 1QB up to Low TW15 1QE up to Low TW15 1QF up to Low TW15 1QG up to Low TW15 1QN up to Low TW15 1QP up to Low TW15 1QQ up to Low TW15 1QW up to Low TW15 1RF up to Low TW15 1RG up to Low TW15 1RJ up to Low TW15 1RL up to Low TW15 1RN up to Low TW15 1RQ up to Low TW15 1RS up to Low TW15 1RT up to Low TW15 1SB up to Low TW15 1SF up to Low TW15 1SJ up to Low TW15 1SL up to Low TW15 1SN up to Low TW15 1SP up to Low TW15 1SR up to Low TW15 1ST up to Low TW15 1SW up to Low TW15 1SX up to Low TW15 1SZ up to Low TW15 1TA up to Low TW15 1TB up to Low TW15 1TD up to Low TW15 1TE up to Low TW15 1TF up to Low TW15 1TG up to Low TW15 1TH up to Low TW15 1TJ up to Low TW15 1TL up to Low TW15 1TP up to Low TW15 1TQ up to Low TW15 1TR up to Low TW15 1TS up to Low TW15 1TT up to Low TW15 1TU up to Low TW15 1TW up to Low TW15 1TX up to Low TW15 1TY up to Low TW15 1UA up to Low TW15 2BB up to Low TW15 2BD up to Low TW15 2BE up to Low TW15 2BH up to Low TW15 2BJ up to Low TW15 2BQ up to Low TW15 2BT up to Low TW15 2BW up to Low TW15 2DA up to Low TW15 2DD up to Low TW15 2DE up to Low TW15 2SP up to Low TW15 3LF up to Low TW15 3LL up to Low TW15 3LQ up to Low TW15 3LX up to Low TW15 3LY up to Low TW15 3LZ up to Low TW15 3NA up to Low TW15 3NE up to Low TW15 3NF up to Low TW15 3NG up to Low TW15 3NH up to Low TW15 3NP up to Low TW15 3NQ up to Low TW15 3NS up to Low TW15 3NU up to Low TW15 3NW up to Low TW15 3PA up to Low TW15 3PH up to Low TW15 3PJ up to Low TW15 3PL up to Low TW15 3PP up to Low TW15 3QZ up to Low TW15 3RA up to Low TW15 3RB up to Low TW15 3RD up to Low TW15 3RG up to Low TW15 3RH up to Low TW15 3RP up to Low TW15 3RQ up to Low TW15 3RU up to Low TW15 3RY up to Low TW15 3RZ up to Low TW15 3SA up to Low TW15 3SB up to Low TW15 3SD up to Low TW15 3SE up to Low TW15 3SF up to Low TW15 3SJ up to Low TW15 1AJ up to Very low TW15 1AL up to Very low TW15 1AP up to Very low TW15 1AR up to Very low TW15 1AW up to Very low TW15 1BS up to Very low TW15 1DD up to Very low TW15 1DF up to Very low TW15 1DG up to Very low TW15 1DH up to Very low TW15 1DN up to Very low TW15 1DP up to Very low TW15 1DQ up to Very low TW15 1DR up to Very low TW15 1DS up to Very low TW15 1DT up to Very low TW15 1DU up to Very low TW15 1DW up to Very low TW15 1DX up to Very low TW15 1EF up to Very low TW15 1EG up to Very low TW15 1EH up to Very low TW15 1EJ up to Very low TW15 1EN up to Very low TW15 1ES up to Very low TW15 1ET up to Very low TW15 1EU up to Very low TW15 1EX up to Very low TW15 1EY up to Very low TW15 1EZ up to Very low TW15 1HA up to Very low TW15 1HB up to Very low TW15 1HD up to Very low TW15 1HE up to Very low TW15 1HG up to Very low TW15 1HJ up to Very low TW15 1HL up to Very low TW15 1JN up to Very low TW15 1JR up to Very low TW15 1JW up to Very low TW15 1LS up to Very low TW15 1NH up to Very low TW15 1NJ up to Very low TW15 1NQ up to Very low TW15 1PD up to Very low TW15 1PE up to Very low TW15 1PF up to Very low TW15 1PG up to Very low TW15 1PH up to Very low TW15 1PJ up to Very low TW15 1PL up to Very low TW15 1PQ up to Very low TW15 1PW up to Very low TW15 1QD up to Very low TW15 1QH up to Very low TW15 1QL up to Very low TW15 1RB up to Very low TW15 1RE up to Very low TW15 1RW up to Very low TW15 1RY up to Very low TW15 1RZ up to Very low TW15 1SG up to Very low TW15 1SQ up to Very low TW15 1SS up to Very low TW15 1SU up to Very low TW15 1SY up to Very low TW15 1TN up to Very low TW15 1UH up to Very low TW15 1XB up to Very low TW15 1YQ up to Very low TW15 2AB up to Very low TW15 2AJ up to Very low TW15 2AL up to Very low TW15 2AP up to Very low TW15 2AQ up to Very low TW15 2AS up to Very low TW15 2AT up to Very low TW15 2BP up to Very low TW15 2BS up to Very low TW15 2BU up to Very low TW15 2BX up to Very low TW15 2BZ up to Very low TW15 2DB up to Very low TW15 2EY up to Very low TW15 2HL up to Very low TW15 2HN up to Very low TW15 3JB up to Very low TW15 3LD up to Very low TW15 3LJ up to Very low TW15 3LU up to Very low TW15 3NB up to Very low TW15 3ND up to Very low TW15 3NL up to Very low TW15 3NN up to Very low TW15 3NR up to Very low TW15 3PD up to Very low TW15 3PG up to Very low TW15 3PQ up to Very low TW15 3PR up to Very low TW15 3PS up to Very low TW15 3PZ up to Very low TW15 3QA up to Very low TW15 3QN up to Very low TW15 3QY up to Very low TW15 3RN up to Very low TW15 3RR up to Very low TW15 3SG up to Very low TW15 3SH up to Very low TW15 3SL up to Very low TW15 3SQ up to Very low

Rivers and flooding history near TW15

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

709 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (147 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 TW15? 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

TW14 TW16 TW13 TW17 TW12 TW18 TW11 TW19

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.