Environment Agency013FWFCH14Gtr Mancs Mersey and Ches
Sankey Brook at Gemini: flood history since 2012
The Environment Agency has issued 10 flood warnings for Sankey Brook at Gemini since 24 Sep 2012, most often in January; the busiest year was 2025 (3).
Flood warnings on record
The flood area
- Flood area
- Sankey Brook at Gemini
- Code
- 013FWFCH14
- Environment Agency area
- Gtr Mancs Mersey and Ches
- County
- Warrington
- River or sea
- Sankey Brook
- First in the history
- 24 Sep 2012
- Latest in the history file
- 20 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 | 0 | 3 | 0 |
| 2024 | 0 | 2 | 0 |
| 2023 | 0 | 1 | 0 |
| 2021 | 0 | 2 | 0 |
| 2015 | 0 | 1 | 0 |
| 2012 | 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 2012 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 |
|---|---|
| 20 Sep 2025 | Flood warning |
| 6 Jan 2025 | Flood warning |
| 1 Jan 2025 | Flood warning |
| 16 Oct 2024 | Flood warning |
| 30 Sep 2024 | Flood warning |
| 24 Jul 2023 | Flood warning |
| 8 Dec 2021 | Flood warning |
| 20 Jan 2021 | Flood warning |
| 26 Dec 2015 | Flood warning |
| 24 Sep 2012 | 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.