Does Guyhirn flood?
What the Environment Agency's rivers-and-sea flood-risk data says about Guyhirn
Ordnance Survey places 20 postcodes in Guyhirn 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 486 properties in the EA dataset's likelihood bands.
| EA likelihood band | Postcodes (worst band) | Properties in the EA dataset | of which homes |
|---|---|---|---|
| High | 3 | 66 | 59 |
| Medium | 13 | 143 | 113 |
| Low | 4 | 273 | 218 |
| Very low | 0 | 4 | 1 |
| All bands | 20 | 486 | 391 |
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.
The watercourse nearest Guyhirn
The nearest watercourse on the river map is the River Nene (tidal here), about 180 m from the middle of Guyhirn's at-risk postcodes.
- DownstreamThe tide carries water both ways here, so no gauge is named as downstream of this point. The tidal gauge WISBECH TIDAL WITS is on this stretch.
- Upstream, above the tideRiver water reaches this stretch past Orton Sluice, about 25 km up the river.
Controlled by a sluice or weir · 27 min ago
A gauge downstream shows water that has already passed this point; one upstream sees it first. Distances along the river are from the point on the River Nene nearest the middle of Guyhirn's at-risk postcodes. From Ordnance Survey’s river map (OS Open Rivers), which leaves out small streams, ditches and culverts, so a nearer one may exist. This describes where water goes on the map; it says nothing about flooding at any address. Contains OS data © Crown copyright and database rights 2026.
Flood warning areas near Guyhirn
3 Environment Agency flood warning areas lie within 10 km of Guyhirn. The EA has issued no flood warning or alert for them since 2006 — the state of the warning record, not evidence the area has not flooded.
-
Tidal River Nene from Dog-in-a-Doublet Sluice to Wisbech, including Guyhirn, Coldham and Begdale
no warning on record since 2006 1.0 km -
Long Sutton to Newborough, including Sutton St James, Leverington, Wisbech St Mary, and Thorney
no warning on record since 2006 7.8 km -
Wisbech including Leverington Road, Barton Road, Lynn Road, Mount Pleasant Road and Waterlees road
no warning on record since 2006 9.6 km
Recorded floods near Guyhirn
Floods whose mapped extent (EA Recorded Flood Outlines) reached within ~5 km of Guyhirn, most recent first. Records, not floods: no outline on the record is not evidence a place has not flooded. See them on the map →
- 9 Apr 1998 — LNA_1998_April_River Nene_d/s Northampton Main river
Rainfall near Guyhirn
Guyhirn gets about 575 mm of rain a year on average (wettest month August, 57 mm; driest March, 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), 2.5 km from the place centre.
The nearest rain gauge, Rainfall station (6.1 km away), recorded 0.4 mm in the last 24 hours and 0.4 mm in the last 7 days (latest reading 27 min ago).
At-risk postcodes in Guyhirn
Every postcode Ordnance Survey places in Guyhirn that appears in the EA's rivers-and-sea dataset, worst band first. Each links to its own flood-risk page.
High likelihood (3)
Medium likelihood (13)
Low likelihood (4)
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.