Environment Agency013WAFSAGtr Mancs Mersey and Ches
River Sankey catchment with St Helens and Warrington: flood history since 2008
The Environment Agency has issued 35 flood alerts for River Sankey catchment with St Helens and Warrington since 10 Jan 2008, most often in December; the busiest year was 2019 (6). The history file ends in June 2026; AreaZine's record of the live feed adds 1 since 1 July 2026.
Flood alerts only
The flood area
- Flood area
- River Sankey catchment with St Helens and Warrington
- Code
- 013WAFSA
- Environment Agency area
- Gtr Mancs Mersey and Ches
- County
- Lancashire, St. Helens, Warrington, Wigan
- River or sea
- River Sankey
- First in the history
- 10 Jan 2008
- Latest in the history file
- 15 Dec 2025
- Latest in AreaZine's record
- Flood alert, 3 Sep 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.
The latest: since 1 July 2026, in AreaZine's record of the live feed
| Date | Level |
|---|---|
| 3 Sep 2026 | Flood alert |
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 | 4 | 0 | 0 |
| 2024 | 4 | 0 | 0 |
| 2023 | 3 | 0 | 0 |
| 2022 | 2 | 0 | 0 |
| 2021 | 6 | 0 | 0 |
| 2020 | 2 | 0 | 0 |
| 2019 | 6 | 0 | 0 |
| 2016 | 1 | 0 | 0 |
| 2015 | 1 | 0 | 0 |
| 2013 | 2 | 0 | 0 |
| 2012 | 4 | 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 2008 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 |
|---|---|
| 15 Dec 2025 | Flood alert |
| 14 Nov 2025 | Flood alert |
| 20 Sep 2025 | Flood alert |
| 5 Jan 2025 | Flood alert |
| 31 Dec 2024 | Flood alert |
| 16 Oct 2024 | Flood alert |
| 30 Sep 2024 | Flood alert |
| 22 May 2024 | Flood alert |
| 26 Aug 2023 | Flood alert |
| 23 Jul 2023 | Flood alert |
| 18 Jun 2023 | Flood alert |
| 21 Nov 2022 | 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.