FloodRadar
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FloodRadar
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Not in an at-risk area
CM11 1WT 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 CM11 or get the full picture below.
The ground here sits at about 58 m above sea level and falls 14 m across the surrounding 800 m. Surface water reaching this point runs off ground lying to the east-north-east, 4.4 m higher.
Because 3 recorded floods nearby; 265 official warnings since 2006.
The map above shows the real EA rivers & sea likelihood cells around CM11 1WT. 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 |
|---|---|---|
| Jan 1968 | 1968 September Flood Outline | ~49.5 km |
| Jun 1958 | 1958 Flood Outline | ~6.6 km |
| Jan 1953 | 1953 Coast Flood Outline Essex | ~25.0 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, 18 warnings nearby) · Henk (2024, 6 warnings nearby) · Conall (2024, 2 warnings nearby) · Debi (2023, 2 warnings nearby)
| Gauge | River | Distance | Typical high | Highest on record |
|---|---|---|---|---|
| Wickford | River Crouch | 4.4 km | 1.67 m | 2.69 m |
| Wardropers | River Wid | 6.6 km | 2.06 m | 2.34 m |
| Noak Bridge | River Crouch | 7.3 km | 0.25 m | 1.14 m |
| Sandon Bridge | Sandon Brook | 8.8 km | 0.75 m | 1.66 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 |
|---|---|---|---|---|
| Heath Road Ps | Trib Sandon Brook | 1.4 km | 33 (2024) | 283 |
| Runwell-downham Road Cso | Tributary River Crouch | 3.2 km | 8 (2024) | 3 |
| Runwell - Brock Hill Cso | Tributary River Crouch | 3.2 km | 0 (2024) | 0 |
| Church End Lane So | Tributary River Crouch | 3.3 km | 2 (2024) | 2 |
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 CM11 1WT — all in the CM11 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 CM11 district.