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Tonbridge, Kent
Up to High likelihood
Properties in TN10 4HB 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% | 1 | 0 |
| Medium | 1% – 3.3% | 0 | 0 |
| Low | 0.1% – 1% | 1 | 1 |
| Very low | below 0.1% | 1 | 1 |
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 23 m above sea level and falls 15 m across the surrounding 800 m. Surface water reaching this point runs off ground lying to the north-east, 8.9 m higher.
Because properties in the high likelihood band; 6 recorded floods nearby; 132 official warnings since 2006.
The map above shows the real EA rivers & sea likelihood cells around TN10 4HB. 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 |
|---|---|---|
| Dec 2013 | 07302C200_Dec2013_Medway_Eden_Teise_Beult | ~7.1 km |
| Oct 2000 | 07302C200_OCT2000_Medway | ~1.8 km |
| Sep 1968 | 07302C200_SEPT1968_Medway_Edenbridge_Yalding | ~1.9 km |
| Nov 1963 | 07302C200_NOV1963_Medway_Tonbridge | ~4.7 km |
| Nov 1960 | 07302C200_NOV1960_Medway_Edenbridge_Yalding | ~8.8 km |
| Sep 1958 | 07303C500_SEPT1958_EdenbridgetoEastPeckham | ~4.9 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.
Dennis (2020, 6 warnings nearby) · Bella (2020, 5 warnings nearby) · Henk (2024, 4 warnings nearby) · Conall (2024, 2 warnings nearby)
| Gauge | River | Distance | Typical high | Highest on record |
|---|---|---|---|---|
| Hartlake Bridge | River Medway | 2.1 km | 16.96 m | — |
| Hartlake Bridge | River Medway | 2.1 km | 1.25 m | 2.13 m |
| Hadlow | Bourne Tributary Medway | 3.1 km | 1.55 m | 2.45 m |
| HADLOW EMGS | — | 3.2 km | — | — |
Live levels, predictions and rain-response behaviour are on each gauge's page and in the property report.
| Overflow | Discharges into | Distance | Spills | Hours |
|---|---|---|---|---|
| Mill Stream, Tonbridge Cso | Mill Stream | 0.2 km | 21 (2024) | 199 |
| Cannon Lane Combined Sewer Overflow | The River Medway | 1.4 km | 72 (2024) | 552 |
| Tonbridge Wwtw | The Botany Stream | 1.6 km | 3 (2024) | 18 |
| Tonbridge Wwtw | The Botany Stream | 1.6 km | 32 (2024) | 452 |
Official annual EDM figures — a water-quality signal for local watercourses, not a property flood-risk factor.
24 mapped flood-defence assets within 500 m — nearest ~60 m (natural 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 TN10 4HB — all in the TN10 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 TN10 district.