FloodRadar
Log inCreate free account

Explore FloodRadar

Does S21 flood?

Yes — parts of the S21 district carry real flood risk: 13 of its 36 at-risk postcodes reach the Environment Agency's High likelihood band. The S21 postcode district covers Eckington South & Renishaw, Eckington North, close to Killamarsh, Eckington Rotherham Road, Meadowgate Regulator, and surrounding villages in parts of South Yorkshire and Derbyshire.

36 postcodes in the S21 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 13 high, 5 medium, 7 low, 11 very low. 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 S21 postcodes are at risk?

S21 1AU up to High S21 1BZ up to High S21 1GZ up to High S21 1JB up to High S21 3JS up to High S21 3TY up to High S21 3UL up to High S21 3UX up to High S21 3WB up to High S21 4FH up to High S21 4HL up to High S21 4LN up to High S21 4LS up to High S21 1AS up to Medium S21 1JE up to Medium S21 1JY up to Medium S21 3TX up to Medium S21 3UZ up to Medium S21 1DX up to Low S21 1DY up to Low S21 1ED up to Low S21 2DR up to Low S21 2DS up to Low S21 3TZ up to Low S21 4BH up to Low S21 1DN up to Very low S21 1DZ up to Very low S21 1EA up to Very low S21 1EB up to Very low S21 1EE up to Very low S21 1EF up to Very low S21 1EN up to Very low S21 1ES up to Very low S21 1HX up to Very low S21 1TE up to Very low S21 1TN up to Very low

Rivers and flooding history near S21

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

202 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (63 at warning level or above), most recently 30 August 2026. Warnings cover flood areas, not individual addresses.

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

🏠 Buying or renting in S21? 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

S20 S18 S17 S25 S26 S14 S13 S12

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.