Does OL4 flood?

Yes — parts of the OL4 district carry real flood risk: 14 of its 23 at-risk postcodes reach the Environment Agency's High likelihood band. The OL4 postcode district covers Saddleworth West & Lees, St Mary's, Saddleworth South, close to Mossley, Greenfield, Delph, and surrounding villages in parts of Greater Manchester and Derbyshire.

23 postcodes in the OL4 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 14 high, 1 medium, 8 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 OL4 postcodes are at risk?

Rivers and flooding history near OL4

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

Waggon Road on the River Tame — 2.9 km away, highest on record 3.28m
Mossley Micklehurst Road on the Micklehurst Brook — 3.2 km away
Uppermill on the River Tame — 3.6 km away, highest on record 1.24m
Delph on the River Tame — 4.3 km away, highest on record 1.91m

28 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (28 at warning level or above), most recently 1 January 2025. Warnings cover flood areas, not individual addresses.

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

Mossley NYE/NYD 25 (2025) — about 3.2 km from the centre
Mossley NYD/NYE 25 (2025) — about 2.9 km from the centre
Uppermill NYE/NYD 25 (2025) — about 2.2 km from the centre
Oldham Delph - NYE/NYD 25 (2025) — about 3.6 km from the centre

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

🏠 Buying or renting in OL4? 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

OL3 OL5 OL2 OL6 OL1 OL8 OL9 OL10

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.