Environment Agency112WATSOM5Wessex
Somerset coast at Portishead and Portbury Dock: flood history since 2015
The Environment Agency has issued 57 flood alerts for Somerset coast at Portishead and Portbury Dock since 21 Mar 2015, most often in March; the busiest year was 2016 (18).
Flood alerts only
The flood area
- Flood area
- Somerset coast at Portishead and Portbury Dock
- Code
- 112WATSOM5
- Environment Agency area
- Wessex
- County
- City of Bristol, North Somerset
- River or sea
- Bristol Channel
- First in the history
- 21 Mar 2015
- Latest in the history file
- 10 Sep 2025
- 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 |
|---|---|---|---|
| 2025 | 2 | 0 | 0 |
| 2024 | 6 | 0 | 0 |
| 2023 | 5 | 0 | 0 |
| 2021 | 1 | 0 | 0 |
| 2020 | 5 | 0 | 0 |
| 2019 | 4 | 0 | 0 |
| 2018 | 3 | 0 | 0 |
| 2017 | 2 | 0 | 0 |
| 2016 | 18 | 0 | 0 |
| 2015 | 11 | 0 | 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 2015 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 |
|---|---|
| 10 Sep 2025 | Flood alert |
| 30 Mar 2025 | Flood alert |
| 17 Oct 2024 | Flood alert |
| 19 Sep 2024 | Flood alert |
| 22 Aug 2024 | Flood alert |
| 8 Apr 2024 | Flood alert |
| 10 Mar 2024 | Flood alert |
| 11 Feb 2024 | Flood alert |
| 28 Oct 2023 | Flood alert |
| 30 Sep 2023 | Flood alert |
| 1 Sep 2023 | Flood alert |
| 21 Mar 2023 | Flood alert |
Source: Environment Agency, Historic Flood Warnings (England); Environment Agency flood-monitoring API. Contains public sector information licensed under the Open Government Licence v3.0.