Does YO90 flood?

Yes — parts of the YO90 district carry real flood risk: 1 of its 3 at-risk postcodes reach the Environment Agency's High likelihood band. The YO90 postcode district covers Micklegate, close to York, York Castle Mills Sluices, York Foss Barrier, and surrounding villages in parts of York and North Yorkshire.

3 postcodes in the YO90 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 1 high, 2 medium. 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 YO90 postcodes are at risk?

YO90 1WR up to High YO90 1UT up to Medium YO90 1UU up to Medium

Rivers and flooding history near YO90

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

Viking Recorder on the River Ouse — 0.2 km away, highest on record 5.40m
York Castle Mills Sluices on the River Foss — 0.8 km away, highest on record 9.28m
York Foss Barrier on the Browney Dyke — 0.9 km away, highest on record 9.24m
York Foss Barrier on the River Ouse — 1 km away, highest on record 10.20m

590 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (390 at warning level or above), most recently 26 March 2026. Warnings cover flood areas, not individual addresses.

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

2022 February Flood Incident -Storm Dudley, Eunice and Franklin (2022) — about 36.3 km from the centre
2021 January Flood Incident - Storm Christoph (2021) — about 28.8 km from the centre
2020 February Flood Incident - Storm Dennis (2020) — about 24.1 km from the centre

🏠 Buying or renting in YO90? 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

YO62 YO61 YO60 YO51 YO43 YO42 YO41 YO32

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.