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Does IP4 flood?

Yes — parts of the IP4 district carry real flood risk: 3 of its 40 at-risk postcodes reach the Environment Agency's High likelihood band. The IP4 postcode district covers Alexandra, close to Woodbridge, Harwich, and surrounding villages in parts of Suffolk and Essex.

40 postcodes in the IP4 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 3 high, 37 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 IP4 postcodes are at risk?

IP4 1AX up to High IP4 1LG up to High IP4 1QJ up to High IP4 1AL up to Very low IP4 1AQ up to Very low IP4 1AS up to Very low IP4 1BF up to Very low IP4 1BN up to Very low IP4 1BQ up to Very low IP4 1BY up to Very low IP4 1BZ up to Very low IP4 1DD up to Very low IP4 1DJ up to Very low IP4 1DL up to Very low IP4 1DT up to Very low IP4 1DW up to Very low IP4 1DY up to Very low IP4 1FA up to Very low IP4 1FE up to Very low IP4 1FF up to Very low IP4 1FG up to Very low IP4 1FH up to Very low IP4 1FP up to Very low IP4 1FQ up to Very low IP4 1FR up to Very low IP4 1FS up to Very low IP4 1FT up to Very low IP4 1FU up to Very low IP4 1FW up to Very low IP4 1FX up to Very low IP4 1FY up to Very low IP4 1FZ up to Very low IP4 1GA up to Very low IP4 1GB up to Very low IP4 1JQ up to Very low IP4 1JZ up to Very low IP4 1LB up to Very low IP4 1LE up to Very low IP4 1LN up to Very low IP4 1QH up to Very low

Rivers and flooding history near IP4

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

335 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (41 at warning level or above), most recently 15 August 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 IP4? 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

IP3 IP2 IP6 IP1 IP7 IP8 IP9 IP10

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.