Environment Agency064WAF41WandleKent S London and E Sussex
River Wandle area in the London Boroughs of Wandsworth, Merton, Lambeth, Croydon and Sutton: flood history since 2012
The Environment Agency has issued 44 flood alerts for River Wandle area in the London Boroughs of Wandsworth, Merton, Lambeth, Croydon and Sutton since 30 Apr 2012, most often in July; the busiest year was 2019 (7).
Flood alerts only
The flood area
- Flood area
- River Wandle area in the London Boroughs of Wandsworth, Merton, Lambeth, Croydon and Sutton
- Code
- 064WAF41Wandle
- Environment Agency area
- Kent S London and E Sussex
- County
- Croydon, Greater London, Lambeth, Merton, Sutton, Wandsworth
- River or sea
- River Wandle
- First in the history
- 30 Apr 2012
- Latest in the history file
- 18 Jul 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 | 2 | 0 | 0 |
| 2022 | 3 | 0 | 0 |
| 2021 | 6 | 0 | 0 |
| 2020 | 3 | 0 | 0 |
| 2019 | 7 | 0 | 0 |
| 2018 | 5 | 0 | 0 |
| 2017 | 4 | 0 | 0 |
| 2016 | 4 | 0 | 0 |
| 2015 | 1 | 0 | 0 |
| 2014 | 2 | 0 | 0 |
| 2013 | 2 | 0 | 0 |
| 2012 | 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 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 |
|---|---|
| 18 Jul 2025 | Flood alert |
| 13 Jun 2025 | Flood alert |
| 7 Oct 2024 | Flood alert |
| 1 Aug 2024 | Flood alert |
| 8 Sep 2022 | Flood alert |
| 24 Aug 2022 | Flood alert |
| 16 Aug 2022 | Flood alert |
| 20 Oct 2021 | Flood alert |
| 4 Oct 2021 | Flood alert |
| 28 Jul 2021 | Flood alert |
| 23 Jul 2021 | Flood alert |
| 20 Jul 2021 | 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.