FloodRadar
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FloodRadar
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Not in an at-risk area
SN15 5LN has no properties in any Environment Agency recorded flood-risk band. That is good news — but it is area-level and never proof a place cannot flood (surface-water and sewer flooding are assessed separately). See the at-risk postcodes in SN15 or get the full picture below.
The ground here sits at about 104 m above sea level and falls 32 m across the surrounding 800 m. Surface water reaching this point runs off ground lying to the south, 4.9 m higher.
Because 6 recorded floods nearby; 272 official warnings since 2006.
The map above shows the real EA rivers & sea likelihood cells around SN15 5LN. 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 |
|---|---|---|
| Apr 2012 | EA112_Avon_April_Flood Event | ~7.8 km |
| Dec 1979 | EA112_Avon_Chippenham_1979 | ~3.2 km |
| Mar 1978 | This represents flooding in the area in 1978 | ~0.9 km |
| Dec 1960 | 1960_Upper_Avon_Hardenhuish_Brook | ~2.5 km |
| May 1932 | EA112_Avon_Chippenham_Calne | ~4.9 km |
| Jan 1925 | EA112_Avon_Chippenham_1925 | ~2.9 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.
Bert (2024, 6 warnings nearby) · Henk (2024, 6 warnings nearby) · Christoph (2021, 4 warnings nearby) · Babet (2023, 3 warnings nearby)
| Gauge | River | Distance | Typical high | Highest on record |
|---|---|---|---|---|
| Stanley | River Marden | 4.8 km | 1.10 m | 3.45 m |
| Corsham | River Avon | 6.9 km | 0.30 m | 0.89 m |
| Rodbourne | Gauze Brook | 9.1 km | 0.35 m | 1.41 m |
| Calne | River Marden | 9.5 km | 0.48 m | 1.28 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 |
|---|---|---|---|---|
| Bristol Road Combined Sewer | Hardenhuish Brook | 1.3 km | 63 (2024) | 199 |
| Gaston Road Cso | Hardenhuish Brook | 1.5 km | 76 (2024) | 487 |
| Dallas Road Combined Sewer Overflow | Hardenhuish Brook | 1.6 km | 0 (2024) | 0 |
| Kington Langley Pumping Station | Trib Of River Avon(s) | 1.7 km | 64 (2024) | 916 |
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 SN15 5LN — all in the SN15 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 SN15 district.