FloodRadar
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Grimsby, North East Lincolnshire
Up to Very low likelihood
Properties in DN32 9ST sit in the Environment Agency's Very low 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% | 0 | 0 |
| Low | 0.1% – 1% | 0 | 0 |
| Very low | below 0.1% | 40 | 40 |
Over a 25-year mortgage, a property in a very low-likelihood area has less than a 3% chance of flooding at least once.
The ground here sits at about 4 m above sea level and falls 9 m across the surrounding 800 m. Surface water reaching this point runs off ground lying to the south-south-east, 7.6 m higher.
Because properties in the very low likelihood band; 5 recorded floods nearby; 52 official warnings since 2006.
The map above shows the real EA rivers & sea likelihood cells around DN32 9ST. 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 |
|---|---|---|
| Feb 2020 | 2020 February Flood Incident - Storm Dennis | ~63.7 km |
| Feb 2020 | 2020 February Flood Incident - Storm Ciara | ~73.8 km |
| Nov 2019 | 2019 November Flood Incident | ~77.0 km |
| Dec 2013 | LNA_2013_12_Tidal_Witham_Haven | ~20.7 km |
| Jan 1953 | LNA_1953_01_Lincolnshire Coastline | ~22.1 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.
2013-14 UK winter floods (2013, 20 warnings nearby) · 2007 UK floods (2007, 7 warnings nearby)
| Gauge | River | Distance | Typical high | Highest on record |
|---|---|---|---|---|
| River Freshney Grimsby | Laceby Beck | 3.8 km | 0.78 m | 1.20 m |
| Laceby | Laceby Beck | 6.5 km | 0.55 m | 1.44 m |
| LACEBY BECK GS | — | 6.5 km | — | — |
| Brigsley | Waithe Beck | 7.2 km | 0.61 m | 1.25 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 |
|---|---|---|---|---|
| Grimsby Fish Docks Pumping Station | River Humber | 2.8 km | 33 (2024) | 59 |
| Humberston - Humberston Road Cso | Tributary Of Little Buck Beck | 3.0 km | 44 (2024) | 211 |
| Berners Road Pumping Station | Little Buck Beck | 3.5 km | 3 (2024) | 0 |
| Grimsby Riby St.ps O.f | River Humber | 3.5 km | 17 (2024) | 124 |
Official annual EDM figures — a water-quality signal for local watercourses, not a property flood-risk factor.
No mapped flood-defence assets within 500 m of the postcode centre. 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 DN32 9ST — all in the DN32 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. Place names: Contains OS data © Crown copyright and database rights 2026. Contains Royal Mail data © Royal Mail copyright and database right 2026. Contains National Statistics data © Crown copyright and database right 2026. Licensed under the Open Government Licence v3.0. 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 DN32 district.