Environment Agency062WAF38BrentHerts and North London
River Brent from Hendon to Brentford: flood history since 2009
The Environment Agency has issued 23 flood alerts for River Brent from Hendon to Brentford since 27 Jun 2009, most often in July; the busiest year was 2012 (3).
Flood alerts only
The flood area
- Flood area
- River Brent from Hendon to Brentford
- Code
- 062WAF38Brent
- Environment Agency area
- Herts and North London
- County
- Barnet, Brent, Ealing, Greater London, Hounslow
- River or sea
- River Brent
- First in the history
- 27 Jun 2009
- Latest in the history file
- 19 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 | 1 | 0 | 0 |
| 2024 | 3 | 0 | 0 |
| 2023 | 1 | 0 | 0 |
| 2022 | 2 | 0 | 0 |
| 2021 | 2 | 0 | 0 |
| 2020 | 2 | 0 | 0 |
| 2018 | 2 | 0 | 0 |
| 2016 | 1 | 0 | 0 |
| 2015 | 3 | 0 | 0 |
| 2013 | 2 | 0 | 0 |
| 2012 | 3 | 0 | 0 |
| 2011 | 1 | 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 2009 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 |
|---|---|
| 19 Jul 2025 | Flood alert |
| 23 Sep 2024 | Flood alert |
| 15 Jul 2024 | Flood alert |
| 5 Jul 2024 | Flood alert |
| 20 Oct 2023 | Flood alert |
| 6 Nov 2022 | Flood alert |
| 3 Nov 2022 | Flood alert |
| 12 Jul 2021 | Flood alert |
| 18 Jun 2021 | Flood alert |
| 3 Oct 2020 | Flood alert |
| 16 Jan 2020 | Flood alert |
| 13 Jul 2018 | 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.