Does S45 flood?

Yes — parts of the S45 district carry real flood risk: 14 of its 32 at-risk postcodes reach the Environment Agency's High likelihood band. The S45 postcode district covers Pilsley & Morton, Clay Cross South, Ashover, Clay Cross North, close to Chesterfield Avenue Washlands, Chesterfield Calow Lane, Chesterfield, and surrounding villages in Derbyshire.

32 postcodes in the S45 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 14 high, 6 medium, 12 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 S45 postcodes are at risk?

S45 0EY up to High S45 0HA up to High S45 0HW up to High S45 8DL up to High S45 8EH up to High S45 8HA up to High S45 9AN up to High S45 9AW up to High S45 9BQ up to High S45 9EP up to High S45 9EW up to High S45 9GX up to High S45 9QD up to High S45 9TW up to High S45 0DZ up to Medium S45 0ER up to Medium S45 0HX up to Medium S45 8HE up to Medium S45 9ET up to Medium S45 9SH up to Medium S45 0FB up to Low S45 8DQ up to Low S45 8EJ up to Low S45 8HT up to Low S45 8JE up to Low S45 8JF up to Low S45 9BX up to Low S45 9ER up to Low S45 9ES up to Low S45 9PH up to Low S45 9QE up to Low S45 9SE up to Low

Rivers and flooding history near S45

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

Chesterfield St Augustines on the River Rother — 7.1 km away, highest on record 3.10m
Chesterfield Calow Lane on the Calow Brook — 7.1 km away, highest on record 1.45m
Chesterfield Park Road Bridge on the River Hipper — 7.9 km away, highest on record 2.93m
Hady Hill on the River Rother — 8 km away, highest on record 4.20m

117 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (30 at warning level or above), most recently 28 February 2026. Warnings cover flood areas, not individual addresses.

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

October 2023 - Storm Babet - Recorded Flood Outline (2023) — about 1.6 km from the centre
Clay Cross October 2023 (2023) — about 0.1 km from the centre
Derwent December 1965 (1965) — about 9.7 km from the centre
1965 Lower Trent - Duffield (1965) — about 21.6 km from the centre

🏠 Buying or renting in S45? 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

S44 S43 S42 S41 S40 S36 S35 S33

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.