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Does CO11 flood?

Yes — parts of the CO11 district carry real flood risk: 16 of its 92 at-risk postcodes reach the Environment Agency's High likelihood band. The CO11 postcode district covers Lawford, Manningtree & Mistley, Brantham, The Oakleys & Wix, Stour Valley, close to Thorington Street, Wivenhoe, Hadleigh, and surrounding villages in parts of Suffolk and Essex.

92 postcodes in the CO11 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 16 high, 12 medium, 15 low, 49 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 CO11 postcodes are at risk?

CO11 1AL up to High CO11 1ET up to High CO11 1HA up to High CO11 1HB up to High CO11 1NG up to High CO11 1QJ up to High CO11 1QL up to High CO11 1QT up to High CO11 2BB up to High CO11 2JZ up to High CO11 2RY up to High CO11 2SA up to High CO11 2SQ up to High CO11 2TD up to High CO11 2TG up to High CO11 2UP up to High CO11 1AR up to Medium CO11 1FL up to Medium CO11 1FZ up to Medium CO11 1NH up to Medium CO11 1NL up to Medium CO11 1QP up to Medium CO11 1QU up to Medium CO11 1QY up to Medium CO11 1RE up to Medium CO11 1RG up to Medium CO11 1RH up to Medium CO11 2PU up to Medium CO11 1AT up to Low CO11 1FX up to Low CO11 1GF up to Low CO11 1GG up to Low CO11 1HL up to Low CO11 1HP up to Low CO11 1QW up to Low CO11 1RF up to Low CO11 2FZ up to Low CO11 2RS up to Low CO11 2SE up to Low CO11 2SF up to Low CO11 2SG up to Low CO11 2UH up to Low CO11 2XW up to Low CO11 1AA up to Very low CO11 1AD up to Very low CO11 1AF up to Very low CO11 1AG up to Very low CO11 1AH up to Very low CO11 1AJ up to Very low CO11 1AP up to Very low CO11 1AQ up to Very low CO11 1AS up to Very low CO11 1AU up to Very low CO11 1AW up to Very low CO11 1AX up to Very low CO11 1AZ up to Very low CO11 1BA up to Very low CO11 1BB up to Very low CO11 1DH up to Very low CO11 1DJ up to Very low CO11 1DX up to Very low CO11 1EB up to Very low CO11 1ED up to Very low CO11 1EE up to Very low CO11 1EF up to Very low CO11 1EG up to Very low CO11 1EH up to Very low CO11 1EP up to Very low CO11 1EQ up to Very low CO11 1EW up to Very low CO11 1FJ up to Very low CO11 1FY up to Very low CO11 1QF up to Very low CO11 1QR up to Very low CO11 1QZ up to Very low CO11 1RW up to Very low CO11 1UG up to Very low CO11 1UN up to Very low CO11 1UP up to Very low CO11 1UQ up to Very low CO11 1UR up to Very low CO11 1US up to Very low CO11 1UT up to Very low CO11 1UW up to Very low CO11 1XE up to Very low CO11 1XF up to Very low CO11 2LB up to Very low CO11 2LD up to Very low CO11 2LE up to Very low CO11 2LG up to Very low CO11 2LH up to Very low CO11 2LQ up to Very low

Rivers and flooding history near CO11

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

21 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (21 at warning level or above), most recently 3 November 2023. 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 CO11? 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

CO10 CO12 CO13 CO9 CO14 CO8 CO15 CO7

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.