Does CB5 flood?

Yes — parts of the CB5 district carry real flood risk: 11 of its 30 at-risk postcodes reach the Environment Agency's High likelihood band. The CB5 postcode district covers Abbey, Market, Fen Ditton & Fulbourn, close to Cambridge, Milton, Grantchester, and surrounding villages in Cambridgeshire.

30 postcodes in the CB5 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 11 high, 5 medium, 14 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 CB5 postcodes are at risk?

CB5 1NR up to High CB5 1XX up to High CB5 8AL up to High CB5 8AQ up to High CB5 8HH up to High CB5 8HL up to High CB5 8HQ up to High CB5 8JF up to High CB5 8NT up to High CB5 8QD up to High CB5 8SX up to High CB5 8AR up to Medium CB5 8EY up to Medium CB5 8HN up to Medium CB5 8HT up to Medium CB5 8TB up to Medium CB5 8AB up to Low CB5 8AF up to Low CB5 8AG up to Low CB5 8AJ up to Low CB5 8AN up to Low CB5 8AP up to Low CB5 8AT up to Low CB5 8AW up to Low CB5 8DH up to Low CB5 8EB up to Low CB5 8JB up to Low CB5 8JJ up to Low CB5 8JQ up to Low CB5 8ST up to Low

Rivers and flooding history near CB5

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

Cambridge Baits Bite on the River Cam — 3.8 km away, highest on record 0.75m
Bin Brook on the Bin Brook — 3.8 km away, highest on record 2.12m
Cambridge Byron's Pool on the River Rhee — 5.3 km away, highest on record 1.63m
Girton on the Washpit Brook — 5.3 km away, highest on record 2.39m

171 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (16 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):

October 2001 (2001) — about 1.8 km from the centre
October 2001 (2001) — about 3.2 km from the centre
May 1978 (1978) — about 3.3 km from the centre

Records, not floods: no outline on the record is not evidence a place has not flooded.

🏠 Buying or renting in CB5? 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

CB4 CB6 CB3 CB7 CB2 CB8 CB1 CB9

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.