Does SW16 flood?

Yes — parts of the SW16 district carry real flood risk: 45 of its 96 at-risk postcodes reach the Environment Agency's High likelihood band. The SW16 postcode district covers Norbury & Pollards Hill, Norbury Park, Furzedown, close to Streatham, South Norwood, Merton, and surrounding villages in parts of Greater London and Surrey.

96 postcodes in the SW16 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 45 high, 12 medium, 39 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 SW16 postcodes are at risk?

SW16 3LG up to High SW16 3LL up to High SW16 3LN up to High SW16 3LQ up to High SW16 3PH up to High SW16 3QL up to High SW16 4AA up to High SW16 4AD up to High SW16 4DW up to High SW16 4EJ up to High SW16 4EU up to High SW16 5AF up to High SW16 5AG up to High SW16 5AQ up to High SW16 5BG up to High SW16 5DE up to High SW16 5DH up to High SW16 5DJ up to High SW16 5DY up to High SW16 5DZ up to High SW16 5EA up to High SW16 5EB up to High SW16 5ED up to High SW16 5EE up to High SW16 5EF up to High SW16 5EG up to High SW16 5EH up to High SW16 5EJ up to High SW16 5EL up to High SW16 5EQ up to High SW16 5EW up to High SW16 5JX up to High SW16 5JY up to High SW16 5JZ up to High SW16 5LA up to High SW16 5LB up to High SW16 5PP up to High SW16 5QA up to High SW16 5QB up to High SW16 5SQ up to High SW16 5TB up to High SW16 5UR up to High SW16 6PE up to High SW16 6PF up to High SW16 6QB up to High SW16 4RT up to Medium SW16 4SA up to Medium SW16 4SD up to Medium SW16 5AY up to Medium SW16 5BE up to Medium SW16 5DD up to Medium SW16 5DQ up to Medium SW16 5EN up to Medium SW16 5PW up to Medium SW16 5TD up to Medium SW16 5TY up to Medium SW16 6QE up to Medium SW16 3LP up to Low SW16 3LW up to Low SW16 3RN up to Low SW16 4JX up to Low SW16 4JZ up to Low SW16 4LA up to Low SW16 4QY up to Low SW16 4RA up to Low SW16 4RH up to Low SW16 4RN up to Low SW16 4RP up to Low SW16 4RQ up to Low SW16 4RR up to Low SW16 4RS up to Low SW16 4RW up to Low SW16 4RZ up to Low SW16 5AH up to Low SW16 5AN up to Low SW16 5AZ up to Low SW16 5BF up to Low SW16 5BJ up to Low SW16 5BQ up to Low SW16 5DT up to Low SW16 5DX up to Low SW16 5SP up to Low SW16 5UA up to Low SW16 5UB up to Low SW16 5UD up to Low SW16 5UE up to Low SW16 5UF up to Low SW16 5UG up to Low SW16 5UQ up to Low SW16 5UU up to Low SW16 5UX up to Low SW16 6DY up to Low SW16 6NU up to Low SW16 6NY up to Low SW16 6QU up to Low SW16 6QX up to Low

Rivers and flooding history near SW16

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

214 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (9 at warning level or above), most recently 27 August 2026. Warnings cover flood areas, not individual addresses.

No recorded flood extent is mapped near this district's centre. No recorded outline near the district means no flood was mapped here, which is not evidence none happened: the Environment Agency mapped only some floods, mapping effort rose sharply after about 2000, and surface-water flooding is largely absent from this record.

🏠 Buying or renting in SW16? 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

SW15 SW17 SW14 SW18 SW13 SW19 SW20 SW11

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.