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Does CM13 flood?

Yes — parts of the CM13 district carry real flood risk: 16 of its 22 at-risk postcodes reach the Environment Agency's High likelihood band. The CM13 postcode district covers Hutton North, Hutton East, Herongate, Ingrave & West Horndon, Hutton South, close to Mountnessing, Billericay, Great Burstead, and surrounding villages in parts of Essex and Greater London.

22 postcodes in the CM13 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 16 high, 3 medium, 3 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 CM13 postcodes are at risk?

CM13 1AB up to High CM13 1AG up to High CM13 1AY up to High CM13 1DT up to High CM13 1DY up to High CM13 1DZ up to High CM13 1SL up to High CM13 1UP up to High CM13 2NN up to High CM13 2NS up to High CM13 3EN up to High CM13 3HE up to High CM13 3LT up to High CM13 3LW up to High CM13 3LX up to High CM13 3SS up to High CM13 1AE up to Medium CM13 1AF up to Medium CM13 2NL up to Medium CM13 1SJ up to Low CM13 1SN up to Low CM13 3QW up to Low

Rivers and flooding history near CM13

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

129 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (14 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 CM13? 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

CM12 CM14 CM11 CM15 CM16 CM17 CM9 CM18

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.