Environment Agency123WAF963Yorkshire
Upper River Calder catchment: flood history since 2011
The Environment Agency has issued 149 flood alerts for Upper River Calder catchment since 5 Feb 2011, most often in December; the busiest year was 2015 (20). The history file ends in June 2026; AreaZine's record of the live feed adds 2 since 1 July 2026.
Flood alerts only
The flood area
- Flood area
- Upper River Calder catchment
- Code
- 123WAF963
- Environment Agency area
- Yorkshire
- County
- Bradford, Calderdale, Kirklees, Rochdale
- River or sea
- River Calder, Walsden Water, Hebden Water
- First in the history
- 5 Feb 2011
- Latest in the history file
- 11 Feb 2026
- 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 |
| 27 Aug 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 |
|---|---|---|---|
| 2026 | 1 | 0 | 0 |
| 2025 | 5 | 0 | 0 |
| 2024 | 11 | 0 | 0 |
| 2023 | 7 | 0 | 0 |
| 2022 | 4 | 0 | 0 |
| 2021 | 10 | 0 | 0 |
| 2020 | 9 | 0 | 0 |
| 2019 | 14 | 0 | 0 |
| 2018 | 8 | 0 | 0 |
| 2017 | 9 | 0 | 0 |
| 2016 | 17 | 0 | 0 |
| 2015 | 20 | 0 | 0 |
| 2014 | 7 | 0 | 0 |
| 2013 | 7 | 0 | 0 |
| 2012 | 17 | 0 | 0 |
| 2011 | 3 | 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 2011 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 |
|---|---|
| 11 Feb 2026 | Flood alert |
| 14 Dec 2025 | Flood alert |
| 8 Dec 2025 | Flood alert |
| 30 Nov 2025 | Flood alert |
| 3 Oct 2025 | Flood alert |
| 20 Sep 2025 | Flood alert |
| 31 Dec 2024 | Flood alert |
| 5 Dec 2024 | Flood alert |
| 22 Nov 2024 | Flood alert |
| 15 Oct 2024 | Flood alert |
| 30 Sep 2024 | Flood alert |
| 22 May 2024 | 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.