Does OL9 flood?

Only lower-likelihood flood risk is recorded in OL9: none of its 1 listed postcodes goes beyond the Low band. The OL9 postcode district covers Chadderton South, close to Manchester, Ancouts, Shaw, and surrounding villages in Greater Manchester.

1 postcode in the OL9 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 1 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 OL9 postcodes are at risk?

OL9 9XP up to Low

Rivers and flooding history near OL9

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

Bridge Street Shaw on the River Beal — 7.7 km away, highest on record 1.38m
London Road on the River Medlock — 7.8 km away, highest on record 1.80m
Manchester Racecourse on the River Irwell — 7.9 km away, highest on record 5.67m
Rochdale on the River Roch — 8.6 km away, highest on record 2.22m

237 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (74 at warning level or above), most recently 15 December 2025. Warnings cover flood areas, not individual addresses.

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

2020 February Flood Incident - Storm Dennis (2020) — about 57.4 km from the centre
Middleton (The Old Grammar School) (2015) — about 2.7 km from the centre
Middleton (Boarshaw Trading Estate) (2015) — about 2.8 km from the centre
June 2007 Flood Event (Ridings Area) (2007) — about 44.1 km from the centre

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

🏠 Buying or renting in OL9? 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

OL10 OL8 OL11 OL12 OL6 OL13 OL5 OL14

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.