Does MK3 flood?

Parts of the MK3 district carry moderate flood risk: 4 of its 10 at-risk postcodes reach the Environment Agency's Medium likelihood band. The MK3 postcode district covers Bletchley East, Bletchley Park, close to Water Eaton, Leighton Buzzard, Willen, and surrounding villages in parts of City of Milton Keynes and Central Bedfordshire.

10 postcodes in the MK3 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 4 medium, 6 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 MK3 postcodes are at risk?

MK3 5FP up to Medium MK3 5FT up to Medium MK3 5FW up to Medium MK3 5GA up to Medium MK3 5BX up to Low MK3 5FQ up to Low MK3 5GB up to Low MK3 5GD up to Low MK3 5GH up to Low MK3 5GL up to Low

Rivers and flooding history near MK3

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

WATERHALL BLETCHLEY FGS — 1.9 km away
Bletchley on the River Ouzel — 1.9 km away, highest on record 1.90m
LEIGHTON BUZZARD GS — 8.9 km away
Leighton Buzzard on the River Ouzel — 8.9 km away, highest on record 1.70m

76 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (56 at warning level or above), most recently 18 December 2025. Warnings cover flood areas, not individual addresses.

Recorded flood extents near the district (Environment Agency record):

September 1992 (1992) — about 2.3 km from the centre
August 1980 (1980) — about 2.7 km from the centre
July 1968 (1968) — about 2 km from the centre
March 1947 (1947) — about 3.7 km from the centre

🏠 Buying or renting in MK3? 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

MK2 MK4 MK5 MK6 MK7 MK10 MK11 MK12

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.