FloodRadar
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Up to High likelihood
Properties in S33 9LD sit in the Environment Agency's High 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% | 2 | 1 |
| Medium | 1% – 3.3% | 0 | 0 |
| Low | 0.1% – 1% | 0 | 0 |
| Very low | below 0.1% | 0 | 0 |
Over a 25-year mortgage, a property in a high-likelihood area has at least a 57% chance of flooding at least once.
The ground here sits at about 177 m above sea level and falls 72 m across the surrounding 800 m. Surface water reaching this point runs off ground lying to the west-south-west, 9.0 m higher.
Because properties in the high likelihood band; 5 recorded floods nearby; 53 official warnings since 2006.
The map above shows the real EA rivers & sea likelihood cells around S33 9LD. 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 | Bradwell October 2023 | ~0.2 km |
| Jan 2021 | 2021 January Flood Incident - Storm Christoph | ~69.9 km |
| Feb 2020 | 2020 February Flood Incident - Storm Dennis | ~70.3 km |
| Nov 2019 | 2019 November Flood Incident | ~42.1 km |
| Jan 1947 | Derwent 1947 | ~27.4 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, 8 warnings nearby) · Franklin (2022, 6 warnings nearby) · Christoph (2021, 5 warnings nearby) · Elin (2023, 4 warnings nearby)
| Gauge | River | Distance | Typical high | Highest on record |
|---|---|---|---|---|
| Bradwell | Bradwell Brook | 0.0 km | 0.90 m | 1.47 m |
| Goosehill Bridge, Castleton | Peakshole Water | 3.0 km | 0.36 m | 0.57 m |
| Mytham Bridge | River Derwent | 3.7 km | 3.20 m | 4.41 m |
| Yorkshire Bridge | River Derwent | 4.4 km | 0.50 m | 2.80 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 |
|---|---|---|---|---|
| The Crescent Cso | Bradwell Brook | 0.4 km | 97 (2024) | 615 |
| Bradwell Sewage Treatment Works | Bradwell Brook | 1.0 km | 87 (2024) | 968 |
| Sewage Pumping Station At Hope | River Noe | 1.8 km | 7 (2024) | 85 |
| Old Sewage Works Cso | Peakshole Water | 2.2 km | 6 (2024) | 80 |
Official annual EDM figures — a water-quality signal for local watercourses, not a property flood-risk factor.
12 mapped flood-defence assets within 500 m — nearest ~21 m (engineered high ground). 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 S33 9LD — all in the S33 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 S33 district.