Environment Agency062WAF28MidColneHerts and North London

Middle River Colne: flood history since 2009

The Environment Agency has issued 15 flood alerts for Middle River Colne since 10 Feb 2009, most often in January; the busiest year was 2024 (5).

Flood alerts only

The flood area

Flood area: Middle River Colne
Code: 062WAF28MidColne
Environment Agency area: Herts and North London
County: Greater London, Hertfordshire, Hillingdon
River or sea: River Colne
First in the history: 10 Feb 2009
Latest in the history file: 5 Jan 2025
Current status: check-for-flooding.service.gov.uk (the Environment Agency's live page)

Source: Environment Agency, Historic Flood Warnings (England); Environment Agency flood-monitoring API. Contains public sector information licensed under the Open Government Licence v3.0.

2024 was the busiest year for Middle River Colne

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	5	0	0
2023	1	0	0
2021	3	0	0
2017	1	0	0
2014	3	0	0
2013	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.

Most often in January

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.

Source: Environment Agency, Historic Flood Warnings (England); Environment Agency flood-monitoring API. Contains public sector information licensed under the Open Government Licence v3.0.