Does CO12 flood?

Yes — parts of the CO12 district carry real flood risk: 35 of its 182 at-risk postcodes reach the Environment Agency's High likelihood band. The CO12 postcode district covers Dovercourt Vines & Parkeston, Dovercourt All Saints, Stour Valley, close to Harwich, and surrounding villages in Essex.

182 postcodes in the CO12 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 35 high, 28 medium, 51 low, 68 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 CO12 postcodes are at risk?

CO12 3BP up to High CO12 3DD up to High CO12 3DG up to High CO12 3EA up to High CO12 3ED up to High CO12 3EJ up to High CO12 3EN up to High CO12 3FN up to High CO12 3FP up to High CO12 3HB up to High CO12 3HF up to High CO12 3HH up to High CO12 3JJ up to High CO12 3JW up to High CO12 3LU up to High CO12 3LX up to High CO12 3LY up to High CO12 3NF up to High CO12 3NJ up to High CO12 3NL up to High CO12 3NY up to High CO12 3SF up to High CO12 3ST up to High CO12 4EN up to High CO12 4NZ up to High CO12 4PT up to High CO12 5BN up to High CO12 5BQ up to High CO12 5HA up to High CO12 5HB up to High CO12 5HL up to High CO12 5HP up to High CO12 5HQ up to High CO12 5JJ up to High CO12 5LE up to High CO12 3BD up to Medium CO12 3BN up to Medium CO12 3BS up to Medium CO12 3BW up to Medium CO12 3DA up to Medium CO12 3DB up to Medium CO12 3DE up to Medium CO12 3DT up to Medium CO12 3DY up to Medium CO12 3EE up to Medium CO12 3ER up to Medium CO12 3ES up to Medium CO12 3EU up to Medium CO12 3EX up to Medium CO12 3EZ up to Medium CO12 3HA up to Medium CO12 3HN up to Medium CO12 3HT up to Medium CO12 3HW up to Medium CO12 3LJ up to Medium CO12 3LP up to Medium CO12 3LW up to Medium CO12 3LZ up to Medium CO12 3ND up to Medium CO12 3NE up to Medium CO12 3RX up to Medium CO12 4EL up to Medium CO12 5NE up to Medium CO12 3AT up to Low CO12 3BJ up to Low CO12 3BZ up to Low CO12 3DJ up to Low CO12 3DL up to Low CO12 3DQ up to Low CO12 3DR up to Low CO12 3DS up to Low CO12 3DX up to Low CO12 3EB up to Low CO12 3EF up to Low CO12 3EG up to Low CO12 3FQ up to Low CO12 3FR up to Low CO12 3GS up to Low CO12 3HG up to Low CO12 3HL up to Low CO12 3HP up to Low CO12 3HQ up to Low CO12 3HR up to Low CO12 3HS up to Low CO12 3HU up to Low CO12 3HX up to Low CO12 3HY up to Low CO12 3HZ up to Low CO12 3JA up to Low CO12 3JB up to Low CO12 3JD up to Low CO12 3JE up to Low CO12 3JF up to Low CO12 3JG up to Low CO12 3JH up to Low CO12 3JQ up to Low CO12 3LB up to Low CO12 3LD up to Low CO12 3LT up to Low CO12 3NA up to Low CO12 3NG up to Low CO12 3NH up to Low CO12 3SD up to Low CO12 3SN up to Low CO12 3SU up to Low CO12 3SW up to Low CO12 3SX up to Low CO12 3SZ up to Low CO12 3TA up to Low CO12 3TS up to Low CO12 3TT up to Low CO12 3TZ up to Low CO12 4EH up to Low CO12 5EY up to Low CO12 3AG up to Very low CO12 3AL up to Very low CO12 3AP up to Very low CO12 3AR up to Very low CO12 3AS up to Very low CO12 3AW up to Very low CO12 3BA up to Very low CO12 3BB up to Very low CO12 3BH up to Very low CO12 3EL up to Very low CO12 3ET up to Very low CO12 3FA up to Very low CO12 3LH up to Very low CO12 3LS up to Very low CO12 3NR up to Very low CO12 3RZ up to Very low CO12 3SL up to Very low CO12 3TN up to Very low CO12 3TP up to Very low CO12 3TR up to Very low CO12 3TW up to Very low CO12 4BH up to Very low CO12 4BW up to Very low CO12 4FE up to Very low CO12 4FF up to Very low CO12 4FH up to Very low CO12 4GA up to Very low CO12 4GD up to Very low CO12 4GE up to Very low CO12 4GF up to Very low CO12 4GG up to Very low CO12 4GJ up to Very low CO12 4GL up to Very low CO12 4JU up to Very low CO12 4LD up to Very low CO12 4LF up to Very low CO12 4NX up to Very low CO12 4PA up to Very low CO12 4PB up to Very low CO12 4PD up to Very low CO12 4PF up to Very low CO12 4PH up to Very low CO12 4PL up to Very low CO12 4PP up to Very low CO12 4PQ up to Very low CO12 4PR up to Very low CO12 4PS up to Very low CO12 4PZ up to Very low CO12 4QB up to Very low CO12 4SL up to Very low CO12 4SP up to Very low CO12 4SR up to Very low CO12 4SS up to Very low CO12 4SX up to Very low CO12 4UU up to Very low CO12 4UY up to Very low CO12 4XJ up to Very low CO12 5BH up to Very low CO12 5ET up to Very low CO12 5EX up to Very low CO12 5HD up to Very low CO12 5HH up to Very low CO12 5HN up to Very low CO12 5HR up to Very low CO12 5HW up to Very low CO12 5JW up to Very low CO12 5LF up to Very low CO12 5LJ up to Very low

Rivers and flooding history near CO12

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

279 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (34 at warning level or above), most recently 28 September 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 CO12? 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

CO11 CO13 CO10 CO14 CO15 CO9 CO16 CO8

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.