Does Allerton Bywater flood?
What the Environment Agency's rivers-and-sea flood-risk data says about Allerton Bywater
Ordnance Survey places 28 postcodes in Allerton Bywater 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 393 properties in the EA dataset's likelihood bands.
| EA likelihood band | Postcodes (worst band) | Properties in the EA dataset | of which homes |
|---|---|---|---|
| High | 6 | 25 | 10 |
| Medium | 10 | 217 | 192 |
| Low | 9 | 105 | 96 |
| Very low | 3 | 46 | 24 |
| All bands | 28 | 393 | 322 |
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 Allerton Bywater
Environment Agency gauges within 10 km of Allerton Bywater watch Aire Washlands, River Aire, River Calder, Oulton Beck, Wash Dike.
-
Allerton Ings
Aire Washlands · 0.5 km away 0.03 m
normal range · steady · 1 h ago -
Mickletown Ings Tidal
Aire Washlands · 0.5 km away 0.36 m
rises and falls with the tide · 1 h ago -
Castleford
River Aire · 1.5 km away 1.44 m
normal range · steady · 1 h ago -
Methley
River Calder · 2.3 km away 1.48 m
normal range · steady · 49 min ago -
Oulton Lemonroyd
River Aire · 3.8 km away 0.67 m
normal range · steady · 1 h ago -
Oulton St Aidans
Aire Washlands · 3.9 km away -0.01 m
normal range · steady · 1 h ago -
Fairburn Sluices
Aire Washlands · 4.9 km away 0.44 m
normal range · steady · 49 min ago -
Farrer Lane
Oulton Beck · 5.6 km away 0.13 m
normal range · 1 h ago -
Pontefract Wash Dike
Wash Dike · 6.8 km away 0.16 m
normal range · 1 h ago -
Ferrybridge Lock Structure
River Aire · 7.3 km away 0.42 m
controlled by a sluice or weir · 1 h ago -
Birkwood
River Calder · 7.6 km away 1.18 m
normal range · rising · 1 h ago -
Ferrybridge Fishergate
Wash Dike · 7.6 km away 0.21 m
around typical high · falling · 1 h ago
Distances are from the middle of Allerton Bywater'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 Allerton Bywater
The nearest watercourse on the river map is the River Aire, about 370 m from the middle of Allerton Bywater's at-risk postcodes. It flows into the River Ouse about 51 km downstream.
- Next gauge downstreamMickletown Ings, about 220 m along the river.
Tidal: rises and falls with the tide · 1 h ago
After that, Allerton Ings, about 380 m along the river. - Storm overflows251 storm overflows are traced upstream of Mickletown Ings on the river map. See them on its page.
- Upstream on this watercourseOulton Lemonroyd, about 4.3 km up the river.
Normal · steady · 1 h 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 Aire nearest the middle of Allerton Bywater'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 Allerton Bywater
26 Environment Agency flood warning areas lie within 10 km of Allerton Bywater. The EA has issued 123 flood warnings and alerts for them since 2006, most recently on 31 Aug 2026.
-
Allerton Bywater including Leeds Road, Vicars Terrace, Main Street, Boat Lane, Victoria Street, Robinson Street, Back Lane and Station Road
no warning on record since 2006 0.2 km -
Allerton Ings including the A656 Barnsdale Road between Allerton Bywater and Castleford
32 warnings and alerts since 2006, latest Nov 2025 0.9 km -
Whitwood Mere including Methley Road, and Riverside Way and Methley including Green Lane
2 warnings and alerts since 2006, latest Oct 2023 1.6 km -
Castleford including the Aire and Calder Navigation, Navigation Road, Lock Lane, William Street, Hunt Street, Mill Lane, Aire Street, Water View and Weir View
4 warnings and alerts since 2006, latest Oct 2023 1.7 km -
Whitwood Mere including Methley Road, Ragan Close, Phillips Street, Pottery Street, Moss Street, Cross Street, Cinder Lane, Wood Street and Savile Road
5 warnings and alerts since 2006, latest Oct 2023 1.9 km -
Castleford including Savile Road, Aire Street, Bridge Street, Francis Street, Queen Street, School Street, Princess Street, Smith Street and Green Lane
no warning on record since 2006 2.0 km -
Mickletown including Main Street, Nelson Court, Lower Mickletown, Moor View, Pinfold Lane and Barnsdale Road
2 warnings and alerts since 2006, latest Feb 2022 2.0 km -
Newton and Fairburn including Newton Lane, Caudle Hill and Ings Mere Court
8 warnings and alerts since 2006, latest Oct 2023 2.6 km -
Methley and Mickletown including the B6135, Green Lane, Watergate, Embleton Road, Church Side, Little Church Lane, Church Lane, Mulberry Gardens, Balmoral Drive, Summerhill Road, Oaksfield and Pinfold Lane
6 warnings and alerts since 2006, latest Oct 2023 3.8 km -
Properties on Wheldale Lane
no warning on record since 2006 4.9 km -
Woodlesford including Bullough Lane, The Locks, Wakefield Road, Juniper Avenue, Gate House Court, Cedar Court, Yew Tree Drive, Chestnut Grove and Lemonroyd Marina
no warning on record since 2006 5.0 km -
Properties along Oulton Beck including on Elmfield, Farrer Lane, Aberford Road and Leeds Road
no warning on record since 2006 5.7 km
Recorded floods near Allerton Bywater
Floods whose mapped extent (EA Recorded Flood Outlines) reached within ~5 km of Allerton Bywater, most recent first. Records, not floods: no outline on the record is not evidence a place has not flooded. See them on the map →
- 20 Feb 2022 — 2022 February Flood Incident -Storm Dudley, Eunice and Franklin Main river
- 18 Jan 2021 — 2021 January Flood Incident - Storm Christoph Drainage
- 15 Feb 2020 — 2020 February Flood Incident - Storm Dennis Drainage
- 8 Feb 2020 — 2020 February Flood Incident - Storm Ciara Main river
- 8 Feb 2020 — 2020 February Flood Incident - Storm Ciara/Dennis Main river
- 7 Nov 2019 — 2019 November Flood Incident Main river
- 25 Dec 2015 — December 2015 Flood Event Main river
- 25 Jun 2007 — June 2007 Flood Event (Ridings Area)
- 25 Jun 2007 — June 2007 Flood Event (Ridings Area)
- 15 Jun 2007 — June 2007 Surface Water Flooding Yorkshire Other
- 9 Aug 2004 — 123 August 2004 Main river
- 10 Feb 2002 — River Calder. Wakefield to Aire-Calder Confluence Main river
…and 21 earlier recorded floods on the map.
Rainfall near Allerton Bywater
Allerton Bywater gets about 638 mm of rain a year on average (wettest month August, 63 mm; driest March, 43 mm). That is 45% drier than the UK as a whole, which averages 1,163 mm a year. Source: Met Office HadUK-Grid 1991–2020 (5 km grid), 0.6 km from the place centre.
The nearest rain gauge, Rainfall station (10.4 km away), recorded 2.8 mm in the last 24 hours and 25.6 mm in the last 7 days (latest reading 1 h ago).
At-risk postcodes in Allerton Bywater
Every postcode Ordnance Survey places in Allerton Bywater that appears in the EA's rivers-and-sea dataset, worst band first. Each links to its own flood-risk page.
High likelihood (6)
Medium likelihood (10)
Low likelihood (9)
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.