Environment Agency112FWFAVN10AWessex
Bristol Avon (upper) from Malmesbury to Chippenham: flood history since 2017
The Environment Agency has issued 23 flood warnings for Bristol Avon (upper) from Malmesbury to Chippenham since 27 Dec 2017, most often in January; the busiest year was 2024 (7).
Flood warnings on record
The flood area
- Flood area
- Bristol Avon (upper) from Malmesbury to Chippenham
- Code
- 112FWFAVN10A
- Environment Agency area
- Wessex
- County
- Wiltshire
- River or sea
- Bristol River Avon
- First in the history
- 27 Dec 2017
- Latest in the history file
- 9 Feb 2026
- Current status
- check-for-flooding.service.gov.uk (the Environment Agency's live page)
Flood alert, flood warning, severe flood warning: what each means
Source: Environment Agency, Historic Flood Warnings (England); Environment Agency flood-monitoring API. Contains public sector information licensed under the Open Government Licence v3.0.
How many alerts and warnings a year?
Flood alerts, flood warnings and severe flood warnings (updates not counted), by year. 2026 runs to the end of June.
The numbers
| Year | Alerts | Warnings | Severe |
|---|---|---|---|
| 2026 | 0 | 1 | 0 |
| 2025 | 0 | 3 | 0 |
| 2024 | 0 | 7 | 0 |
| 2023 | 0 | 5 | 0 |
| 2021 | 0 | 1 | 0 |
| 2020 | 0 | 3 | 0 |
| 2019 | 0 | 1 | 0 |
| 2018 | 0 | 1 | 0 |
| 2017 | 0 | 1 | 0 |
Source: Environment Agency, Historic Flood Warnings (England); Environment Agency flood-monitoring API. Contains public sector information licensed under the Open Government Licence v3.0.
When in the year?
All alerts and warnings since 2017 by month.
Source: Environment Agency, Historic Flood Warnings (England); Environment Agency flood-monitoring API. Contains public sector information licensed under the Open Government Licence v3.0.
Before July 2026: the latest in the history file
| Date | Level |
|---|---|
| 9 Feb 2026 | Flood warning |
| 16 Dec 2025 | Flood warning |
| 14 Nov 2025 | Flood warning |
| 27 Jan 2025 | Flood warning |
| 24 Nov 2024 | Flood warning |
| 9 Oct 2024 | Flood warning |
| 28 Mar 2024 | Flood warning |
| 22 Feb 2024 | Flood warning |
| 18 Feb 2024 | Flood warning |
| 8 Feb 2024 | Flood warning |
| 2 Jan 2024 | Flood warning |
| 31 Dec 2023 | Flood warning |
Source: Environment Agency, Historic Flood Warnings (England); Environment Agency flood-monitoring API. Contains public sector information licensed under the Open Government Licence v3.0.