Does CM0 flood?

Yes — parts of the CM0 district carry real flood risk: 43 of its 135 at-risk postcodes reach the Environment Agency's High likelihood band. The CM0 postcode district covers Burnham-on-Crouch South, Mayland, Tillingham, Southminster in Maldon.

135 postcodes in the CM0 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 43 high, 4 medium, 17 low, 71 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 CM0 postcodes are at risk?

CM0 7AP up to High CM0 7AW up to High CM0 7BD up to High CM0 7BG up to High CM0 7FX up to High CM0 7HR up to High CM0 7HY up to High CM0 7HZ up to High CM0 7JB up to High CM0 7JG up to High CM0 7JJ up to High CM0 7JN up to High CM0 7JQ up to High CM0 7LY up to High CM0 7NF up to High CM0 7PN up to High CM0 7PW up to High CM0 7QB up to High CM0 7QY up to High CM0 7RS up to High CM0 7RW up to High CM0 7SN up to High CM0 7UR up to High CM0 7UT up to High CM0 7UY up to High CM0 7XW up to High CM0 7YF up to High CM0 8AG up to High CM0 8AJ up to High CM0 8AS up to High CM0 8AU up to High CM0 8AX up to High CM0 8LU up to High CM0 8LZ up to High CM0 8NB up to High CM0 8ND up to High CM0 8NE up to High CM0 8NF up to High CM0 8NG up to High CM0 8NJ up to High CM0 8NQ up to High CM0 8PL up to High CM0 8PT up to High CM0 7QU up to Medium CM0 7QX up to Medium CM0 7RP up to Medium CM0 8PZ up to Medium CM0 7BB up to Low CM0 7GQ up to Low CM0 7GR up to Low CM0 7HW up to Low CM0 7JH up to Low CM0 7JZ up to Low CM0 7LU up to Low CM0 7PH up to Low CM0 7PZ up to Low CM0 7XT up to Low CM0 8AH up to Low CM0 8AP up to Low CM0 8AR up to Low CM0 8AT up to Low CM0 8AW up to Low CM0 8BE up to Low CM0 8HA up to Low CM0 7DP up to Very low CM0 7JD up to Very low CM0 7LQ up to Very low CM0 7LS up to Very low CM0 7LT up to Very low CM0 7NA up to Very low CM0 7NB up to Very low CM0 7ND up to Very low CM0 7NE up to Very low CM0 7NG up to Very low CM0 7NH up to Very low CM0 7NJ up to Very low CM0 7NL up to Very low CM0 7NN up to Very low CM0 7NP up to Very low CM0 7NQ up to Very low CM0 7NR up to Very low CM0 7NS up to Very low CM0 7NT up to Very low CM0 7NU up to Very low CM0 7PA up to Very low CM0 7QZ up to Very low CM0 7RB up to Very low CM0 7UP up to Very low CM0 8AA up to Very low CM0 8AB up to Very low CM0 8AN up to Very low CM0 8BD up to Very low CM0 8BQ up to Very low CM0 8EJ up to Very low CM0 8ER up to Very low CM0 8EY up to Very low CM0 8EZ up to Very low CM0 8FA up to Very low CM0 8GL up to Very low CM0 8GZ up to Very low CM0 8HB up to Very low CM0 8HH up to Very low CM0 8HJ up to Very low CM0 8HP up to Very low CM0 8HQ up to Very low CM0 8HR up to Very low CM0 8HS up to Very low CM0 8HT up to Very low CM0 8HW up to Very low CM0 8HX up to Very low CM0 8JA up to Very low CM0 8JB up to Very low CM0 8JD up to Very low CM0 8JS up to Very low CM0 8JT up to Very low CM0 8JU up to Very low CM0 8JX up to Very low CM0 8JY up to Very low CM0 8JZ up to Very low CM0 8LA up to Very low CM0 8LB up to Very low CM0 8LD up to Very low CM0 8LL up to Very low CM0 8LP up to Very low CM0 8LQ up to Very low CM0 8LR up to Very low CM0 8LS up to Very low CM0 8LT up to Very low CM0 8PN up to Very low CM0 8PP up to Very low CM0 8RP up to Very low CM0 8RR up to Very low CM0 8SY up to Very low CM0 8SZ up to Very low CM0 8TG up to Very low

Rivers and flooding history near CM0

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

176 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (7 at warning level or above), most recently 18 July 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 CM0? 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

CM1 CM2 CM3 CM4 CM5 CM6 CM7 CM8

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.