Does CM6 flood?

Yes — parts of the CM6 district carry real flood risk: 27 of its 64 at-risk postcodes reach the Environment Agency's High likelihood band. The CM6 postcode district covers Thaxted & the Eastons, Great Dunmow South & Barnston, Great Dunmow North, close to Churchend, Felsted, Great Bardfield, and surrounding villages in Essex.

64 postcodes in the CM6 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 27 high, 16 medium, 20 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).

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Which CM6 postcodes are at risk?

CM6 1EL up to High CM6 1JT up to High CM6 1LL up to High CM6 1QY up to High CM6 1RD up to High CM6 1RY up to High CM6 1XA up to High CM6 1XG up to High CM6 2AA up to High CM6 2AD up to High CM6 2AF up to High CM6 2HH up to High CM6 2HJ up to High CM6 2HW up to High CM6 2HZ up to High CM6 2JG up to High CM6 2PY up to High CM6 3AH up to High CM6 3BS up to High CM6 3HD up to High CM6 3HQ up to High CM6 3HU up to High CM6 3LD up to High CM6 3PS up to High CM6 3QZ up to High CM6 3RS up to High CM6 3TE up to High CM6 1HU up to Medium CM6 1JW up to Medium CM6 1SN up to Medium CM6 1SR up to Medium CM6 2EH up to Medium CM6 2LB up to Medium CM6 2LD up to Medium CM6 2LF up to Medium CM6 2LG up to Medium CM6 2LQ up to Medium CM6 2LT up to Medium CM6 2ND up to Medium CM6 2PA up to Medium CM6 2RP up to Medium CM6 3AR up to Medium CM6 3NX up to Medium CM6 1EW up to Low CM6 1HD up to Low CM6 1HW up to Low CM6 1LP up to Low CM6 1LW up to Low CM6 1QS up to Low CM6 1RE up to Low CM6 1SG up to Low CM6 1SU up to Low CM6 1XN up to Low CM6 2AE up to Low CM6 2AL up to Low CM6 2JB up to Low CM6 2LA up to Low CM6 2NE up to Low CM6 2RA up to Low CM6 3LQ up to Low CM6 3QR up to Low CM6 3QT up to Low CM6 3SN up to Low CM6 1JU up to Very low

Rivers and flooding history near CM6

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

40 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 16 February 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 CM6? 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

CM5 CM7 CM4 CM8 CM3 CM9 CM2 CM1

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.