Does Basildon flood?
What the Environment Agency's rivers-and-sea flood-risk data says about Basildon
Ordnance Survey places 31 postcodes in Basildon in the Environment Agency's rivers-and-sea flood-risk dataset (Risk of Flooding from Rivers and Sea). Each postcode is counted once, under the worst band any of its properties reaches; together they hold 240 properties in the EA dataset's likelihood bands.
| EA likelihood band | Postcodes (worst band) | Properties in the EA dataset | of which homes |
|---|---|---|---|
| High | 5 | 15 | 0 |
| Medium | 2 | 9 | 1 |
| Low | 24 | 216 | 146 |
| Very low | 0 | 0 | 0 |
| All bands | 31 | 240 | 147 |
This dataset covers flooding from rivers and the sea only — one of five flood sources. Surface water, groundwater, sewers and reservoirs are assessed separately, so a postcode missing from it is not proof that a place cannot flood. The band describes the land around properties (allowing for defences), not any single address and not today's conditions.
Rivers and live river levels near Basildon
Environment Agency gauges within 10 km of Basildon watch River Crouch, River Wid.
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Wickford
River Crouch · 3.9 km away 0.16 m
normal range · steady · 24 min ago -
Noak Bridge
River Crouch · 3.9 km away -0.66 mAOD
normal range · rising · 24 min ago -
Wardropers
River Wid · 8.9 km away 0.68 m
normal range · just past its peak · 24 min ago
Distances are from the middle of Basildon's at-risk postcodes. Tidal and structure gauges are shown as readings only — the tide and sluice gates move them, not floods. A gauge with no recent reading shows no level.
The watercourse nearest Basildon
The river map has no watercourse within 1 km of the middle of Basildon's at-risk postcodes.
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.
Flood warning areas near Basildon
7 Environment Agency flood warning areas lie within 10 km of Basildon. The EA has issued 66 flood warnings and alerts for them since 2006, most recently on 5 Jan 2025.
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The River Crouch from Noak Bridge through Wickford to Runwell
13 warnings and alerts since 2006, latest Oct 2021 2.3 km -
The River Crouch from Noaks Bridge to Runwell, including Wickford
36 warnings and alerts since 2006, latest Jan 2025 2.6 km -
Shellhaven to Tilbury, including Mucking and Linford
no warning on record since 2006 7.1 km -
Canvey Island north of the A130, Long Road
no warning on record since 2006 7.1 km -
The Essex coast at Canvey Island to South Benfleet, and Wat Tyler Country Park and surrounding marshland
no warning on record since 2006 8.0 km -
Leigh-on-Sea frontage including the High Street, Chalkwell to Hadleigh marshes and Two Tree Island
1 warning or alert since 2006, latest Jan 2017 9.8 km -
The Essex coast from Leigh-on-Sea, to and including, Hadleigh Marshes, and Two Tree Island
16 warnings and alerts since 2006, latest Apr 2024 9.8 km
Recorded floods near Basildon
Floods whose mapped extent (EA Recorded Flood Outlines) reached within ~5 km of Basildon, most recent first. Records, not floods: no outline on the record is not evidence a place has not flooded. See them on the map →
- 5 Dec 2013 — 2013 Flood Outline Sea
- 12 Jan 1968 — 1968 September Flood Outline Main river
- 1 Jun 1958 — 1958 Flood Outline Other
- 31 Jan 1953 — 1953 Coast Flood Outline Essex Sea
Rainfall near Basildon
Basildon gets about 575 mm of rain a year on average (wettest month October, 63 mm; driest March, 35 mm). That is 51% drier than the UK as a whole, which averages 1,163 mm a year. Source: Met Office HadUK-Grid 1991–2020 (5 km grid), 2.1 km from the place centre.
The nearest rain gauge, Rainfall station (1.5 km away), recorded 5.6 mm in the last 24 hours and 66.2 mm in the last 7 days (latest reading 24 min ago).
At-risk postcodes in Basildon
Every postcode Ordnance Survey places in Basildon that appears in the EA's rivers-and-sea dataset, worst band first. Each links to its own flood-risk page.
High likelihood (5)
Medium likelihood (2)
Low likelihood (24)
Postcode districts
Sources
FloodRadar summarises public flood data. It is not a flood-risk survey of any property, and it does not replace official GOV.UK flood warnings or the GOV.UK long-term flood risk service.
Flood-risk bands: © 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, flood warning areas and warning history © Environment Agency copyright and/or database right 2025. Licensed under the Open Government Licence v3.0.
River levels and rainfall: Environment Agency real-time flood-monitoring data, updated every 15 minutes (Open Government Licence v3.0).
Average rainfall: HadUK-Grid v1.3.2, Met Office. Contains public sector information licensed under the Open Government Licence v3.0.
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.