Environment Agency062FWF28ColnbrkHerts and North London
Colne Brook at Colnbrook: flood history since 2014
The Environment Agency has issued 10 flood warnings for Colne Brook at Colnbrook since 9 Jan 2014, most often in January; the busiest year was 2014 (3).
Flood warnings on record
The flood area
- Flood area
- Colne Brook at Colnbrook
- Code
- 062FWF28Colnbrk
- Environment Agency area
- Herts and North London
- County
- Greater London, Hillingdon, Slough, Surrey, Windsor and Maidenhead
- River or sea
- Colne Brook
- First in the history
- 9 Jan 2014
- Latest in the history file
- 6 Jan 2024
- 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 |
|---|---|---|---|
| 2024 | 0 | 1 | 0 |
| 2023 | 0 | 1 | 0 |
| 2021 | 0 | 2 | 0 |
| 2020 | 0 | 1 | 0 |
| 2019 | 0 | 1 | 0 |
| 2016 | 0 | 1 | 0 |
| 2014 | 0 | 3 | 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 2014 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 |
|---|---|
| 6 Jan 2024 | Flood warning |
| 4 Oct 2023 | Flood warning |
| 30 Jan 2021 | Flood warning |
| 29 Jan 2021 | Flood warning |
| 16 Feb 2020 | Flood warning |
| 22 Dec 2019 | Flood warning |
| 23 Jun 2016 | Flood warning |
| 8 Feb 2014 | Flood warning |
| 31 Jan 2014 | Flood warning |
| 9 Jan 2014 | 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.