FloodRadar
Log inCreate free account
FloodRadar
Log inCreate free account
No property in an EA risk band
No property in SM1 2NF appears in the Environment Agency's rivers-and-sea flood-risk dataset. That dataset covers one of five flood sources. It is area-level, it covers rivers and the sea only, and it is never proof a place cannot flood — surface water, groundwater, sewers and reservoirs are assessed separately. See the at-risk postcodes in SM1 or get the full picture below.
SM1 2NF gets about 665 mm of rain a year on average (wettest month November, 74 mm; driest March, 41 mm). That is 43% 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), 2.7 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 44 m above sea level and falls 25 m across the surrounding 800 m. Surface water reaching this point runs off ground lying to the south-west, 16.0 m higher.
The river map has no watercourse within 1 km of the centre of SM1 2NF.
That means this spot is not on the river map, not that there is no water here: Ordnance Survey’s river map (OS Open Rivers) leaves out small streams, ditches and culverts. Contains OS data © Crown copyright and database rights 2026.
Because 461 official warnings since 2006.
The map above shows the real EA rivers & sea likelihood cells around SM1 2NF. 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.
None mapped within ~1 km of this postcode's centre.
No recorded outline near this postcode means no flood was mapped here, which is not evidence none happened: the Environment Agency mapped only some floods, mapping effort rose sharply after about 2000, and surface-water flooding is largely absent from this record. The full report tests every other flood source at the exact building.
2013-14 UK winter floods (2013, 28 warnings nearby) ▶ replay it here · Dennis (2020, 7 warnings nearby) ▶ replay it here · Henk (2024, 5 warnings nearby) ▶ replay it here · Conall (2024, 4 warnings nearby) ▶ replay it here
| Gauge | River | Distance | Typical high | Highest on record |
|---|---|---|---|---|
| North Cheam | Pyl Brook | 1.3 km | 2.39 m | 2.92 m |
| Worcester Park | Beverley Brook | 3.1 km | 2.20 m | 2.85 m |
| Morden Park | Pyl Brook | 3.2 km | 1.76 m | 2.40 m |
| Bourne Hall GS | — | 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 |
|---|---|---|---|---|
| Manor Drive Storm Tanks | Hogsmill | 3.7 km | 9 (2024) | 15 |
| Epsom Storm Tanks | Green Lanes Stream | 4.2 km | 2 (2024) | 3 |
| Beddington | Beddington Effluent Carrier/wa | 4.4 km | 10 (2024) | 48 |
| Westway Close | Old Pyl Ditch | 4.9 km | 3 (2024) | 12 |
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 SM1 2NF — all in the SM1 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 (England); live overflow status © the water companies, incl. Dŵr Cymru Welsh Water and Scottish Water. 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 SM1 district.