FloodRadar
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FloodRadar
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Up to Medium likelihood
Properties in S41 9HY sit in the Environment Agency's Medium flood-likelihood band (worst property). The band is the worst found in the postcode — it describes the land around properties (defence-adjusted, rivers & sea), not any single address, and not today's conditions.
| Likelihood band | Annual chance | Properties | Of which homes |
|---|---|---|---|
| High | greater than 3.3% | 0 | 0 |
| Medium | 1% – 3.3% | 4 | 0 |
| Low | 0.1% – 1% | 0 | 0 |
| Very low | below 0.1% | 2 | 0 |
Over a 25-year mortgage, a property in a medium-likelihood area has a 22–57% chance of flooding at least once.
The ground here sits at about 81 m above sea level and falls 35 m across the surrounding 800 m. Surface water reaching this point runs off ground lying to the north-north-west, 3.1 m higher.
Because properties in the medium likelihood band; 3 recorded floods nearby; 113 official warnings since 2006.
The map above shows the real EA rivers & sea likelihood cells around S41 9HY. The small panels are illustrative previews of the report's per-layer map views — the full report draws each layer for real, plus recorded extents, defences and a building picker on an interactive map.
Warnings cover flood areas, not individual addresses.
| Date | Recorded flood | Approx. distance |
|---|---|---|
| Oct 2023 | October 2023 - Storm Babet - Recorded Flood Outline | ~0.4 km |
| Jan 2021 | 2021 January Flood Incident - Storm Christoph | ~68.1 km |
| Feb 2020 | 2020 February Flood Incident - Storm Dennis | ~63.1 km |
EA Recorded Flood Outlines — absence of a record never proves a place has not flooded. The full report tests whether any extent covered the exact spot.
Babet (2023, 23 warnings nearby) · Dennis (2020, 7 warnings nearby) · Angus (2016, 6 warnings nearby) · Katie (2016, 3 warnings nearby)
| Gauge | River | Distance | Typical high | Highest on record |
|---|---|---|---|---|
| Whittington | River Rother | 0.7 km | 2.45 m | 4.12 m |
| Sheepbridge | River Whitting | 1.3 km | 1.36 m | 2.56 m |
| Chesterfield Tapton Bridge | River Rother | 2.5 km | 1.33 m | 3.42 m |
| Chesterfield Ashgate | Holme Brook | 3.2 km | 1.00 m | 1.75 m |
Live levels, predictions and rain-response behaviour are on each gauge's page and in the property report.
| Overflow | Discharges into | Distance | Spills | Hours |
|---|---|---|---|---|
| North Brimington Works Cso | River Whitting | 0.3 km | 1 (2024) | 1 |
| Brimington Road North Cso | River Whitting | 0.5 km | 80 (2024) | 482 |
| Station Road Brimington Cso | River Rother | 0.5 km | 8 (2024) | 16 |
| Old Whittington (chesterfield) Stw | River Rother | 0.5 km | 79 (2024) | 879 |
Official annual EDM figures — a water-quality signal for local watercourses, not a property flood-risk factor.
9 mapped flood-defence assets within 500 m — nearest ~282 m (natural high ground, wall, engineered high ground, bridge abutment). Defences reduce risk, never remove it.
The interactive flood-risk map with a building picker (your exact house, not the postcode), the 2050s climate view, surface-water and planning flood zones at your building, exact recorded-flood distances, year-by-year warning charts, watercourses including culverted streams, an insurance outlook with the Flood Re rules, and a printable document with every dataset receipt — start with the free preview, unlock for £19.
At-risk postcodes near S41 9HY — all in the S41 district.
© 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. Recorded Flood Outlines and warning history © Environment Agency copyright and/or database right 2025. Storm-overflow figures: EA Event Duration Monitoring. Flood defences © Environment Agency (OGL v3). This page summarises public area-level data — it is not a flood-risk survey and not a substitute for the official GOV.UK service. All data sources & licences. More postcodes: the S41 district.