Environment Agency064WAF33HogsmillKent S London and E Sussex
River Hogsmill area from Ewell to Kingston upon Thames: flood history since 2012
The Environment Agency has issued 49 flood alerts for River Hogsmill area from Ewell to Kingston upon Thames since 30 Apr 2012, most often in July; the busiest year was 2021 (8).
Flood alerts only
The flood area
- Flood area
- River Hogsmill area from Ewell to Kingston upon Thames
- Code
- 064WAF33Hogsmill
- Environment Agency area
- Kent S London and E Sussex
- County
- Greater London, Kingston upon Thames, Surrey
- River or sea
- Hogsmill
- 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 | 3 | 0 | 0 |
| 2023 | 1 | 0 | 0 |
| 2022 | 3 | 0 | 0 |
| 2021 | 8 | 0 | 0 |
| 2020 | 3 | 0 | 0 |
| 2019 | 6 | 0 | 0 |
| 2018 | 4 | 0 | 0 |
| 2017 | 6 | 0 | 0 |
| 2016 | 4 | 0 | 0 |
| 2014 | 2 | 0 | 0 |
| 2013 | 3 | 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 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 |
| 4 Jan 2024 | Flood alert |
| 31 Mar 2023 | 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 |
| 7 Aug 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.