Not in an at-risk area
CM8 3UD 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 CM8 or get the full picture below.
Because 6 recorded floods nearby; 43 official warnings since 2006.
The map above shows the real EA rivers & sea likelihood cells around CM8 3UD. 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 | 2013 Flood Outline | ~73.3 km |
| Jan 2009 | 2009 Flood Outline | ~6.3 km |
| Oct 2001 | 2001 Flood Outline | ~14.1 km |
| Jan 1968 | 1968 September Flood Outline | ~30.6 km |
| Jun 1958 | 1958 Flood Outline | ~13.4 km |
| Jan 1953 | 1953 Coast Flood Outline Essex | ~16.2 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, 7 warnings nearby) · Chandra (2026, 1 warnings nearby) · Ciara (2020, 1 warnings nearby)
| Gauge | River | Distance | Typical high | Highest on record |
|---|---|---|---|---|
| GUITHAVON VALLEY FGS WITHAM | — | 1.2 km | — | — |
| Guithavon Valley | River Brain | 1.3 km | 0.61 m | 1.46 m |
| Appleford Bridge | River Blackwater | 2.3 km | 1.26 m | 2.33 m |
| Stisted | River Blackwater | 10.8 km | 1.27 m | 2.10 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 |
|---|---|---|---|---|
| Witham Stw | Tidal River Chelmer | 0.3 km | 9 (2024) | 32 |
| Great Totham Stw | Spicketts Brook Nt Blackwater | 4.4 km | 0 (2024) | 0 |
Official annual EDM figures — a water-quality signal for local watercourses, not a property flood-risk factor.
10 mapped flood-defence assets within 500 m — nearest ~232 m (natural high ground, embankment). 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 CM8 3UD — all in the CM8 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 CM8 district.