Does SE9 flood?

Yes — parts of the SE9 district carry real flood risk: 5 of its 8 at-risk postcodes reach the Environment Agency's High likelihood band. The SE9 postcode district covers Middle Park & Horn Park, close to Hither Green, Grove Park, Catford, and surrounding villages in Greater London.

8 postcodes in the SE9 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 5 high, 1 medium, 2 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).

Free preview first · full report £19

Which SE9 postcodes are at risk?

SE9 5LN up to High SE9 5LP up to High SE9 5LR up to High SE9 5LT up to High SE9 5LU up to High SE9 5LW up to Medium SE9 5LS up to Very low SE9 5LX up to Very low

Rivers and flooding history near SE9

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

Manor House Gardens on the River Quaggy — 1.8 km away, highest on record 1.08m
Chinbrook Park on the River Quaggy — 2.3 km away, highest on record 0.75m
Downham Lane on the Spring Brook — 3.9 km away, highest on record 1.74m
Beckenham Park on the River Ravensbourne — 4.2 km away, highest on record 1.49m

316 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (19 at warning level or above), most recently 27 August 2026. Warnings cover flood areas, not individual addresses.

Recorded flood extents near the district (Environment Agency record):

September 1968 flooding — about 3.4 km from the centre

Records, not floods: no outline on the record is not evidence a place has not flooded.

🏠 Buying or renting in SE9? 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

SE10 SE8 SE11 SE7 SE12 SE6 SE13 SE5

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.