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Does EN4 flood?

Yes — parts of the EN4 district carry real flood risk: 14 of its 28 at-risk postcodes reach the Environment Agency's High likelihood band. The EN4 postcode district covers Brunswick Park, Cockfosters, East Barnet, close to Totteridge, Southgate, Winchmore Hill, and surrounding villages in parts of Greater London and Hertfordshire.

28 postcodes in the EN4 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 14 high, 3 medium, 10 low, 1 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 EN4 postcodes are at risk?

EN4 0EU up to High EN4 0HH up to High EN4 0HJ up to High EN4 0HY up to High EN4 8JR up to High EN4 8JS up to High EN4 8JU up to High EN4 8JX up to High EN4 8LE up to High EN4 8LF up to High EN4 8NT up to High EN4 8NU up to High EN4 8NX up to High EN4 9RB up to High EN4 8JP up to Medium EN4 9RL up to Medium EN4 9RY up to Medium EN4 0EH up to Low EN4 0HZ up to Low EN4 0JP up to Low EN4 0JS up to Low EN4 8NY up to Low EN4 9QA up to Low EN4 9QF up to Low EN4 9RN up to Low EN4 9RP up to Low EN4 9RX up to Low EN4 0AR up to Very low

Rivers and flooding history near EN4

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

242 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (6 at warning level or above), most recently 28 August 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 EN4? 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

EN3 EN5 EN2 EN6 EN1 EN7 EN8 EN9

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.