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Thorngumbald, East Riding of Yorkshire
Up to Low likelihood
Properties in HU12 9QD sit in the Environment Agency's 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% | 2 | 0 |
| Very low | below 0.1% | 26 | 26 |
Over a 25-year mortgage, a property in a low-likelihood area has a 2–22% chance of flooding at least once.
HU12 9QD gets about 635 mm of rain a year on average (wettest month November, 67 mm; driest March, 38 mm). That is 45% drier than the UK as a whole, which averages 1,163 mm a year.
A thirty-year average for the surrounding area, not a measurement at this address and not a flood risk on its own: a dry area floods when a storm sits over it, and a wet one may drain away perfectly well. Source: Met Office HadUK-Grid 1991–2020 (5 km grid), 2.6 km away. Average rainfall: HadUK-Grid v1.3.2, Met Office. Contains public sector information licensed under the Open Government Licence v3.0.
The ground here sits at about 2 m above sea level and falls 3 m across the surrounding 800 m. The ground contributing surface water to this point lies to the south-south-west.
Because properties in the low likelihood band; 6 recorded flood outlines mapped nearby; 151 official warnings since 2006.
The map above shows the real EA rivers & sea likelihood cells around HU12 9QD. 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 | Mapped flood extent | Approx. distance |
|---|---|---|
| Feb 2020 | 2020 February Flood Incident - Storm Dennis | ~52.0 km |
| Feb 2020 | 2020 February Flood Incident - Storm Ciara | ~61.8 km |
| Nov 2019 | 2019 November Flood Incident | ~71.5 km |
| Dec 2013 | LNA_2013_12_Tidal_Witham_Haven | ~20.9 km |
| Jun 2007 | June 2007 Flood Event (Hull and East Riding) | ~3.5 km |
| Jun 2007 | June 2007 Surface Water Flooding Yorkshire | ~2.9 km |
These are extents the Environment Agency has mapped, not a list of every flood. Records, not floods: no outline on the record is not evidence a place has not flooded. The full report tests whether any extent covered the exact spot.
2013-14 UK winter floods (2013, 12 warnings nearby) · 2007 UK floods (2007, 5 warnings nearby) · Ashley (2024, 2 warnings nearby) · Lilian (2024, 2 warnings nearby)
| Gauge | River | Distance | Typical high | Highest on record |
|---|---|---|---|---|
| Hedon Thorn Road Bridge | Burstwick Drain | 2.6 km | — | 2.64 m |
| Hedon Westlands Drain | Burstwick Drain | 3.2 km | — | 1.99 m |
| Burstwick Hall Road Bridge | Burstwick Drain | 3.3 km | 1.90 m | 3.09 m |
| Salt end | Burstwick Drain | 4.1 km | — | 2.67 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 |
|---|---|---|---|---|
| Ryehill Sewage Pumping Station | Green Marsh Drain | 1.3 km | 1 (2024) | 0 |
| Chestnut Avenue Sps | Burstwick Drain | 2.5 km | 1 (2024) | 0 |
| Station Lane Hedon Cso | Reedmere Sewer | 3.4 km | 1 (2024) | 0 |
| Basin Bridge Sps | R. Humber & Burstwick Drain | 3.5 km | 22 (2024) | 119 |
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 HU12 9QD — all in the HU12 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 HU12 district.