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BHazard risk Grade
Flood & hazards in Frampton Cotterell and Winterbourne · Environment Agency

Surface water, more than the river, is Frampton Cotterell and Winterbourne’s flood risk: 6.3% of homes, against under 0.1% from rivers or the sea

On the Environment Agency’s maps, which allow for flood defences, “high or medium” means at least a 1 in 100 chance of flooding from rivers or the sea in any year. Frampton Cotterell and Winterbourne grades B for hazard risk: #11 of 48 in Gloucestershire.

1960worst recorded flood5flood warnings since 2006100%in a radon Affected Area
In brief

What stands out about Frampton Cotterell and Winterbourne’s hazards

From the Environment Agency’s maps and records and the BGS radon atlas, below.

Rain, more than the river6.3% of homes sit where heavy rain can flood the streets, against under 0.1% at risk from rivers and the sea.Remembers 1960Floodwater covered 7 hectares of today’s Frampton Cotterell and Winterbourne in 1960; 22 of today’s households live inside past flood outlines.The Bristol Frome ran its 2nd-highest in November 20241.17 m at Frampton Cotterell on 25 November 2024, 3 cm under the record set in 2000.5 flood warnings since 2006For the parts of Frampton Cotterell and Winterbourne the Environment Agency warns directly; the most recent on 14 November 2025.
By hazard

What Frampton Cotterell and Winterbourne faces

Each hazard against its own yardstick; meters run from low to high on that yardstick.

Rivers and the sea

under 0.1%of homes at high or medium risk
Fewer than the typical UK town · more than 37% of towns
2 homes by the EA’s own count

Surface water

6.3%of homes at high or medium risk
More than 79% of UK towns
About 390 households

Past floods

4years with a recorded flood
Last recorded: October 2000
22 households inside past outlines

The Bristol Frome

0.94 mhighest in winter 2025–26 at Frampton Cotterell
10th-highest of 35 winters
Record 1.20 m, October 2000

Flood warnings

5flood warnings since 2006
48 flood alerts for the wider area
Last warning 14 November 2025

Radon

100%of the town in a radon Affected Area
Highest band here: 10–30% of homes
100% in squares of 5% or more
Not on this page: coastal erosion, subsidence and shrink-swell ground (the British Geological Survey licenses it), groundwater flooding and reservoir failure.
Hazard risk Grade

Frampton Cotterell and Winterbourne grades B for hazard risk

Flood risk from rivers and the sea, against all UK towns.

Homes at high or medium flood risk (under 0.1%)Fewer than 62% of UK towns

The share of homes at high or medium risk from rivers and the sea, ranked against every UK town of 1,000 or more: fewer homes at risk is better. Towns with none at high or medium risk are ordered by their share at low risk, so they don’t all share one score. Surface water and radon aren’t graded: they are described below.

Flood map

Where the water goes in Frampton Cotterell and Winterbourne

Turn layers on and off. Blue is the risk from rivers and the sea; pink is where heavy rain collects. Both allow for flood defences.

Recorded flood: 1960Recorded flood: 1965Recorded flood: 1968Recorded flood: 2000© OpenStreetMap contributors · EA NaFRA2
HighMediumLowrivers & seaHighMediumLowsurface waterFrampton Cotterell and Winterbourne’s built-up area

The river and sea risk follows the Bristol Frome. Surface-water risk is spread across the town, in dips, underpasses and along small streams, which is why more homes are exposed to it.

Rivers and the sea

Under 0.1% of Frampton Cotterell and Winterbourne’s homes are at high or medium risk from rivers or the sea

The Environment Agency’s national map, allowing for defences. A further under 0.1% are at low risk.

High riskunder 0.1%of homes · 1 in 30 a year or more2 homes, EA count
Medium risk0%of homes · 1 in 30 to 1 in 1000 homes, EA count
Low riskunder 0.1%of homes · 1 in 100 to 1 in 1,0004 homes, EA count
Where Frampton Cotterell and Winterbourne sits among 3,735 UK towns
35%None
23%Under 0.5%Frampton Cotterell and Winterbourne
9%0.5–1%
11%1–2%
11%2–5%
5%5–10%
3%10–20%
2%20% +

Share of each UK town’s homes at high or medium risk from rivers and the sea. 35% of UK towns have none; Frampton Cotterell and Winterbourne has more than 37% of towns.

Towns its size: 100th of 405 from the fewest homes at risk
#TownPeopleHigh or med.
1Rothwell West Yorkshire20,9640%
2Hazlemere Buckinghamshire20,0060%
3Failsworth Greater Manchester19,9620%
…
98Raunds Northamptonshire10,231under 0.1%
99Hoyland South Yorkshire15,527under 0.1%
100Frampton Cotterell and Winterbourne Gloucestershire14,969under 0.1%
101Middlewich Cheshire14,428under 0.1%
102Catterick Garrison North Yorkshire14,212under 0.1%
…
404Dunscroft and Hatfield South Yorkshire14,00051%
405Goole East Riding of Yorkshire20,17394%

UK towns of 10,000 to 21,000 people.

The Environment Agency’s Risk of Flooding from Rivers and Sea (NaFRA2, June 2026) counts each postcode’s homes by band; the shares weight those postcodes by Census 2021 households. The EA counts include homes built since 2021.

Surface water

6.3% of Frampton Cotterell and Winterbourne’s homes are at high or medium risk from surface water

Surface water is rain that falls faster than drains and the ground can take it. It is mapped separately from rivers and the sea, and it is not in the Hazard risk Grade.

Surface water6.3%
Rivers and the seaunder 0.1%
0%10.5%21% of homes

About 3.4% of homes are at high risk of surface-water flooding (a 1 in 30 chance or more each year) and 3% at medium risk: roughly 390 households. A further 8.6% face a low risk from surface water. That is more than 79% of UK towns.

~390
households at high or medium risk
8.6%
of homes at low risk
79%
of UK towns have a smaller share
7,235
addresses read on the map

Our estimate: every address in the town (ONS NSUL) read on the Environment Agency’s Risk of Flooding from Surface Water map (NaFRA2, 2025), each postcode’s share weighted by its Census 2021 households. Neither agency publishes a count of homes for surface water, so treat it as a guide; one street can differ from the next.

Flood history

Frampton Cotterell and Winterbourne has flooded in 4 recorded years since 1960, most of all in 1960

Every flood the Environment Agency has mapped inside Frampton Cotterell and Winterbourne’s built-up area, newest first. The record is fullest for big river floods; small and surface-water floods are often missing.

  1. 2000October 2000: River flooding recorded3 hectares inside today’s built-up area
  2. 1968July 1968: River flooding recordedUnder 1 hectare inside today’s built-up area
  3. 1965December 1965: River flooding recorded2 hectares inside today’s built-up area
  4. 1960December 1960: River flooding recorded7 hectares inside today’s built-up area
The worst: 19607 ha

Floodwater covered 7 hectares of what is now Frampton Cotterell and Winterbourne in 1960, the largest flood the record holds here (December).

22 of Frampton Cotterell and Winterbourne’s households today live inside the outline of a recorded flood.

Since 1960, the largest recorded flood inside the town covered 3 hectares.

River levels

The Bristol Frome in November 2024 rose to its 2nd-highest level since 1990

The highest level each winter (October to September) at the Environment Agency’s Frampton Cotterell gauge (Frampton Cotterell), since 1990. The river normally runs between 0.03 m and 0.35 m here.

Highest level each winter, metres
Winter 1990–91: highest 0.62 m · 20 days above the normal rangeWinter 1991–92: highest 0.51 m · 9 days above the normal rangeWinter 1992–93: highest 0.83 m · 40 days above the normal rangeWinter 1993–94: highest 0.80 m · 61 days above the normal rangeWinter 1994–95: highest 0.72 m · 65 days above the normal rangeWinter 1995–96: highest 0.75 m · 25 days above the normal rangeWinter 1996–97: highest 0.65 m · 25 days above the normal rangeWinter 1997–98: highest 0.86 m · 43 days above the normal rangeWinter 1998–99: highest 1.01 m on 20 January 1999 · 60 days above the normal rangeWinter 1999–00: highest 0.83 m · 56 days above the normal rangeWinter 2000–01: highest 1.20 m on 30 October 2000 · 102 days above the normal rangeWinter 2001–02: highest 1.03 m on 12 February 2002 · 44 days above the normal rangeWinter 2002–03: highest 0.90 m · 44 days above the normal rangeWinter 2003–04: highest 0.70 m · 29 days above the normal rangeWinter 2004–05: highest 0.74 m · 15 days above the normal rangeWinter 2005–06: highest 0.75 m · 29 days above the normal rangeWinter 2006–07: highest 0.94 m · 74 days above the normal rangeWinter 2007–08: highest 0.99 m on 12 January 2008 · 57 days above the normal rangeWinter 2008–09: highest 0.75 m · 32 days above the normal rangeWinter 2009–10: highest 0.80 m · 39 days above the normal rangeWinter 2010–11: highest 0.79 m · 14 days above the normal rangeWinter 2011–12: highest 0.82 m · 51 days above the normal rangeWinter 2012–13: highest 1.09 m on 23 December 2012 · 62 days above the normal rangeWinter 2013–14: highest 0.90 m · 78 days above the normal rangeWinter 2014–15: highest 0.60 m · 30 days above the normal rangeWinter 2015–16: highest 0.79 m · 50 days above the normal rangeWinter 2016–17: highest 0.82 m · 18 days above the normal rangeWinter 2017–18: highest 0.87 m · 37 days above the normal rangeWinter 2018–19: highest 0.68 m · 23 days above the normal rangeWinter 2019–20: highest 0.87 m · 80 days above the normal rangeWinter 2020–21: highest 0.80 m · 54 days above the normal rangeWinter 2022–23: highest 0.97 m · 60 days above the normal rangeWinter 2023–24: highest 0.99 m on 3 January 2024 · 109 days above the normal rangeWinter 2024–25: highest 1.17 m on 25 November 2024 · 39 days above the normal rangeWinter 2025–26: highest 0.94 m · 70 days above the normal range’00–01’24–25’12–13Record 1.20 m, 2000Top of normal range
1990–912025–26
The highest days on record
  • 30 October 20001.20 m
  • 25 November 20241.17 m
  • 23 December 20121.09 m
  • 12 February 20021.03 m
  • 20 January 19991.01 m
  • 22 November 20121.00 m

The Bristol Frome has topped its normal range on 1,644 days since 1990, most in the winters of 2023–24 and 2000–01. By its highest day, the winter of 2025–26 was the 10th-highest of the 35.

Environment Agency Hydrology API, Frampton Cotterell (station 53141), daily maximum level; the record and normal range from the EA’s stage scale. Live river levels are on GOV.UK’s Check for flooding.

Flood warnings

No flood warning or alert is in force for Frampton Cotterell and Winterbourne · 5 warnings in 20 years

The Environment Agency has 1 flood warning area and 1 alert area reaching into the town; warnings since the service began in 2006.

Now: no flood warnings or alerts for Frampton Cotterell and Winterbourne (checked 15 November 2026, 18:09). Check for flooding on GOV.UK →
Warnings and alerts each year for areas in Frampton Cotterell and Winterbourne
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
Flood warning (flooding expected)Flood alert (flooding possible)

Of the 5 warnings, 5 were for Bristol Frome from downstream of Nibley to Stapleton. 2024 had the most warnings (3).

The most recent warning was on 14 November 2025.

Show the 2 warning and alert areas
AreaKindSince 2006Now
Bristol Frome from downstream of Nibley to StapletonWarning area5None
Bristol Frome catchmentAlert area48None

Environment Agency Historic Flood Warnings (first issues only, not updates; “flood watch” counted as an alert before 2011) and the real-time flood-monitoring API. Sign up for free warnings on GOV.UK or call Floodline, 0345 988 1188.

Radon

Parts of Frampton Cotterell and Winterbourne are in radon Affected Areas, up to the 10–30% band

Radon is a natural radioactive gas from the ground; long exposure raises the risk of lung cancer. The atlas gives the chance that a home in each 1 km square is above the UK action level (200 Bq/m³).

ST6479: 10–30% of homes above the action levelST6480: 10–30% of homes above the action levelST6481: 5–10% of homes above the action levelST6579: 10–30% of homes above the action levelST6580: 5–10% of homes above the action levelST6581: 5–10% of homes above the action levelST6582: 5–10% of homes above the action levelST6679: 5–10% of homes above the action levelST6680: 5–10% of homes above the action levelST6681: 10–30% of homes above the action levelST6682: 5–10% of homes above the action levelST6780: 5–10% of homes above the action levelST6781: 5–10% of homes above the action levelST6782: 5–10% of homes above the action levelST6881: 5–10% of homes above the action level© OpenStreetMap contributors · BGS/UKHSA
5–10%10–30%
Share of the town’s area in each band
5–10% of homes69%
10–30% of homes31%

100% of Frampton Cotterell and Winterbourne’s built-up area is in a radon Affected Area (1% of homes or more above the action level), and 100% in squares of 5% or more.

The squares are indicative: each takes the highest band found anywhere inside it, so most homes in a coloured square are below it. Only a three-month test in the home gives a real answer.

BGS/UKHSA Indicative Atlas of Radon in Great Britain, version 3. Check an address at UKradon.org.

Neighbours

Flood risk in the places around Frampton Cotterell and Winterbourne

Share of homes at high or medium and at low risk from rivers and the sea. Tap a town for its page.

Stoke Gifford: Hazard risk C+Yate: Hazard risk CBradley Stoke: Hazard risk B−Pucklechurch: Hazard risk AChipping Sodbury: Hazard risk C−Filton: Hazard risk AKingswood and Fishponds: Hazard risk B−Stoke GiffordYateBradley StokePucklechurchChipping SodburyFiltonKingswood and FishpondsFrampton Cotterell and Winterbourne
ABCD
TownPeopleHigh or mediumLowHazard
Frampton Cotterell and Winterbourne14,969under 0.1%under 0.1%B
Stoke Gifford13,4770.4%0.5%C+
Yate28,3521%1.5%C
Bradley Stoke25,1940.2%0.2%B−
Pucklechurch2,7020%0%A
Chipping Sodbury8,0261.6%4.2%C−
Filton10,9550%0%A
Kingswood and Fishponds160,2800.2%0.4%B−

Chipping Sodbury, 3.8 miles east, has the most homes at risk around Frampton Cotterell and Winterbourne (1.6% at high or medium). Pucklechurch and Filton have none.

Be ready

Get ready for what Frampton Cotterell and Winterbourne faces

Free warnings, what to do in a cloudburst, and what to check before you move.

Get the warnings
  • Sign up free for Environment Agency flood warnings by text, call or email.
  • Floodline: 0345 988 1188, 24 hours.
  • Frampton Cotterell and Winterbourne’s warning areas include Bristol Frome from downstream of Nibley to Stapleton.
Sign up ↗
In a cloudburst
  • Surface water rises in minutes, often with no warning issued: stay out of underpasses and dips.
  • Keep the gullies and drains outside your home clear of leaves.
  • Report a blocked road drain to the council.
Radon
  • Test over three months, in a living room and a bedroom.
  • Above 200 Bq/m³, a small sump and fan usually fixes it.
  • New homes in radon areas are built with protection: basic from 3%, full from 10%.
UKradon ↗
Before you buy or rent in Frampton Cotterell and Winterbourne
  • Check the address on GOV.UK’s long-term flood risk service: it gives rivers and sea and surface water separately.
  • Ask whether the home has flooded or had a flood insurance claim; the TA6 property form asks the seller.
  • Homes built before 2009 can get flood cover through Flood Re, the government-backed scheme; newer homes can’t.
  • Check radon for the address on UKradon.org (a small fee) or ask the seller for a test result.
How to read these numbers

What this data can and can’t tell you

  • Defences are counted. Both agencies’ maps allow for flood defences and the chance they are overtopped or fail, so a town behind a defence scheme can show few homes at high risk and many at low risk.
  • Surface water is our estimate. Neither agency publishes a count of homes at risk from surface water, so we read each address on the map. A flat on a hill and a basement in a dip can share a postcode.
  • Past floods are what was recorded. The flood outlines come from surveys, aerial photographs and reports; many small floods, and most surface-water floods, were never mapped.
  • One town, many streets. Risk is street by street. Check a specific address on GOV.UK’s long-term flood risk service before you buy or rent.

Check the long-term flood risk for an address on GOV.UK →

Questions about flooding and hazards in Frampton Cotterell and Winterbourne

Does Frampton Cotterell and Winterbourne flood?

The last flood the Environment Agency recorded inside the town was in October 2000. Under 0.1% of homes are at high or medium risk from rivers and the sea on the Environment Agency’s maps, which allow for flood defences. About 6.3% of homes are at high or medium risk from surface water, when heavy rain overwhelms the drains. Frampton Cotterell and Winterbourne grades B for hazard risk against UK towns.

Which parts of Frampton Cotterell and Winterbourne are at risk of flooding?

From rivers and the sea, the places the Environment Agency warns directly: Bristol Frome from downstream of Nibley to Stapleton. Surface water can collect in low spots anywhere in the town. Check a specific address on GOV.UK’s long-term flood risk service.

When did Frampton Cotterell and Winterbourne last flood?

The recorded flood outlines inside the town run from 1960 to 2000 (4 years); the largest was in 1960. Flood warnings have been issued for parts of the town since 2006, most recently on 14 November 2025.

Is Frampton Cotterell and Winterbourne at risk of surface water flooding?

About 3.4% of homes are at high risk and 3% at medium risk from surface water, against under 0.1% at high or medium risk from rivers and the sea. Surface water floods come with little warning, and the agencies don’t issue warnings for them.

Is radon a problem in Frampton Cotterell and Winterbourne?

100% of the town’s built-up area is in a radon Affected Area on the BGS/UKHSA atlas, and 100% is in 1 km squares where 5% or more of homes may be above the action level. Most homes are below it; a three-month test is the only way to know.

Are there flood warnings in Frampton Cotterell and Winterbourne now?

No flood warning or alert was in force near Frampton Cotterell and Winterbourne at 15 November 2026, 18:09. Live warnings are on GOV.UK’s Check for flooding service and Floodline, 0345 988 1188.

Contains Environment Agency information © Environment Agency and/or database right 2026. Contains British Geological Survey materials © UKRI 2026.

Sources: Environment Agency Risk of Flooding from Rivers and Sea, postcodes in areas at risk (June 2026); Natural Resources Wales Flood Risk Assessment Wales (May 2026); ONS Census 2021 households by postcode · Environment Agency Risk of Flooding from Surface Water (NaFRA2, 2025) and Natural Resources Wales Flood Risk Assessment Wales surface water and small watercourses, read at every address (ONS National Statistics UPRN Lookup, September 2026) and weighted by Census 2021 households by postcode · Environment Agency Recorded Flood Outlines and Natural Resources Wales historic flood map, inside the ONS 2022 built-up-area boundary · Environment Agency Hydrology API (daily maximum river level) and flood-monitoring stage scales · Environment Agency real-time flood-monitoring API · Environment Agency Historic Flood Warnings (January 2006 to June 2026) and flood warning and alert areas · BGS/UKHSA Indicative Atlas of Radon in Great Britain, version 3, by 1 km square · TownRatings grades: our own summary of the data, ranked against UK towns only. All under the Open Government Licence v3.0.

Contains public sector information licensed under the Open Government Licence v3.0. Contains HM Land Registry data © Crown copyright and database right 2026. Contains OS data © Crown copyright and database right 2026 (ONS boundaries). Northern Ireland: Source: NISRA; contains Land & Property Services data and Ordnance Survey of Northern Ireland information, © Crown copyright, licensed under the Open Government Licence v3.0. Scotland: contains National Records of Scotland data, Registers of Scotland data and SEPA data, © Crown copyright / © SEPA 2025, licensed under the Open Government Licence v3.0.