FloodRadar
Log inCreate free account
FloodRadar
Log inCreate free account
Does Keynsham flood? 49 postcodes in Keynsham are in the Environment Agency's rivers-and-sea flood-risk data (17 High, 3 Medium likelihood) — the breakdown is further down this page.
No official flood warning is active nearby and the closest river stations are within normal ranges.
Updated 2026-10-10 12:32:41 UTC · Official GOV.UK warnings · Flood preparation & help guide
Keynsham is a town and civil parish in the Bath and North East Somerset district of Somerset, England. It lies close to the south-eastern outskirts of the city of Bristol, on the A4 road that links Bristol and Bath. At the 2021 census the parish had a population of 19,596 and the built-up area had a population of 19,255. It was listed in the Domesday Book as Cainesham, which is believed to mean the home of Saint Keyne.
Ordnance Survey places 49 postcodes in Keynsham 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 488 properties in the EA dataset's likelihood bands.
| EA likelihood band | Postcodes (worst band) | Properties in the EA dataset | of which homes |
|---|---|---|---|
| High | 17 | 58 | 36 |
| Medium | 3 | 20 | 7 |
| Low | 29 | 377 | 288 |
| Very low | 0 | 33 | 33 |
| All bands | 49 | 488 | 364 |
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.
Kingswood · Mangotsfield · Bath
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.
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.
The nearest watercourse on the river map is the River Avon, about 20 m from the middle of Keynsham's gauges. It flows on to the sea.
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 Avon nearest the middle of Keynsham's gauges. 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.
Keynsham is monitored by 1 Environment Agency river level station on the River Avon, in South Gloucestershire. Water levels are updated every 15 minutes, providing real-time flood monitoring for the area.
The River Avon is monitored by 1 station (Keynsham, Rivermead). Each station records water levels continuously, with data synced to FloodRadar every 5 minutes.
There are 8 Environment Agency flood warning areas within 10km of Keynsham. When the EA issues a flood warning for any of these areas, it will appear on this page. These include: Bristol Avon from New Bridge to Netham including Saltford, Mead Lane, Swineford, Broad Mead, Keynsham Road, Hanham Mills, Riverside Cottages and St Annes Park; Airport Road, Hither Bath Bridge, Lanes End, West Town Lane Primary School playing fields, Homemead Drive, Callington Road, Kenneth Road, the railway line at St Annes and Chapel Way; Oakdale Road, South Bristol Sports Ground, Church Hill, Hollywood Road, Jean Road, School Road, Clayfield Road, Victory Park, Natures Garden and St Annes Wood; Sturminster Road, West Town Grove, Beechmount Grove, Hengrove Avenue, Bears Bridge, Wootton Park, West Town Lane Primary School, Callington Road, Jean Road, Edna Avenue and Eldonwall Trading Estate.
There are 50 storm overflows within 5km of Keynsham. None of the 50 with a reporting monitor are currently discharging. Enable "Sewage" on the map above to see their locations.
6 of them, nearest first, with their own page of live status and past discharges:
If flooding is forecast in Keynsham, call Floodline on 0345 988 1188 for the latest information. Move valuables upstairs, turn off gas and electricity if safe to do so, and avoid walking or driving through flood water. Sign up for flood warnings on any station page above to receive email alerts when water levels rise. For emergency numbers, a preparation checklist and insurance guidance, see our flood help & preparation guide.
Keynsham gets about 810 mm of rain a year on average (wettest month December, 90 mm; driest April, 52 mm). That is 30% drier than the UK as a whole, which averages 1,163 mm a year. See the rain gauges →
A thirty-year average for the area, not a forecast and not a flood risk on its own. Source: Met Office HadUK-Grid 1991–2020 (5 km grid), 2.1 km away. Average rainfall: HadUK-Grid v1.3.2, Met Office. Contains public sector information licensed under the Open Government Licence v3.0.
Floods whose mapped extent (EA Recorded Flood Outlines) reached within ~5 km of the town centre — most recent first. These are records of mapped extents, not a full list of floods. See them on the map →
Records, not floods: no outline on the record is not evidence a place has not flooded.
Current verdict: Normal. No official flood warning is active nearby and the closest river stations are within normal ranges.
Keynsham has river level monitoring on River Avon — 1 monitoring station in total.
Use the GOV.UK Check for Flooding service (check-for-flooding.service.gov.uk) or call Floodline on 0345 988 1188 (24 hours). You can also set up free FloodRadar email or browser alerts from any station page above.
Follow official advice: move valuables and vehicles to safety, never walk or drive through flood water, turn off gas and electricity if safe, and check on vulnerable neighbours. See our flood preparation guide at floodradar.co.uk/flood-help.
Yes — the Environment Agency's Recorded Flood Outlines dataset shows 20 recorded flood extents around the town centre since 1703, most recently in 2000. That is a count of mapped extents, not of separate floods. Records, not floods: no outline on the record is not evidence a place has not flooded. See the flood history link below.
FloodRadar helper · beta