Does Manea flood?
What the Environment Agency's rivers-and-sea flood-risk data says about Manea
Ordnance Survey places 20 postcodes in Manea 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 379 properties in the EA dataset's likelihood bands.
| EA likelihood band | Postcodes (worst band) | Properties in the EA dataset | of which homes |
|---|---|---|---|
| High | 0 | 0 | 0 |
| Medium | 0 | 0 | 0 |
| Low | 17 | 281 | 178 |
| Very low | 3 | 98 | 83 |
| All bands | 20 | 379 | 261 |
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 Manea
Environment Agency gauges within 10 km of Manea watch Counter Drain, River Great Ouse.
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Welches Dam Structure
Counter Drain · 4.1 km away No recent reading
last reported 10 Nov 2026 14:00 -
Welney Causeway Tidal
River Great Ouse · 6.2 km away 0.87 m
rises and falls with the tide · 27 min ago
Distances are from the middle of Manea'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 Manea
The river map has no watercourse within 1 km of the middle of Manea'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 Manea
3 Environment Agency flood warning areas lie within 10 km of Manea. The EA has issued 102 flood warnings and alerts for them since 2006, most recently on 28 Feb 2026.
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Hundred Foot Washes, also known as the Ouse Washes, including the causeways at Earith, Sutton Gault and Welney
102 warnings and alerts since 2006, latest Feb 2026 2.3 km -
Coveney, Witchford, Little Downham, Littleport, Welney, Southery, Hilgay and Denver
no warning on record since 2006 7.0 km -
Manea, Welney, Christchurch, Lot's Bridge, Nordelph and Salters Lode
no warning on record since 2006 7.8 km
Recorded floods near Manea
Floods whose mapped extent (EA Recorded Flood Outlines) reached within ~5 km of Manea, most recent first. Records, not floods: no outline on the record is not evidence a place has not flooded. See them on the map →
- 12 Jan 1968 — 1968 September Flood Outline Main river
Rainfall near Manea
Manea gets about 568 mm of rain a year on average (wettest month October, 58 mm; driest February, 33 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), 2.4 km from the place centre.
The nearest rain gauge, Rainfall station (8.6 km away), recorded 0.1 mm in the last 24 hours and 0.1 mm in the last 7 days (latest reading 27 min ago).
At-risk postcodes in Manea
Every postcode Ordnance Survey places in Manea that appears in the EA's rivers-and-sea dataset, worst band first. Each links to its own flood-risk page.
Low likelihood (17)
Very low likelihood (3)
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.