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Flood Warning: Upper River Colne and Radlett Brook

Message Last Updated:
2025-07-06 15:51:00

Severity Last Changed:
2025-07-06 15:51:00

High river levels throughout the afternoon may lead to flooding.



Flooding is possible when river levels are at their highest from 3:30 PM on Sunday 6th July.



Property flooding is not expected.



Flooding is forecast to affect locations near the Radlett Brook, Colne, and Mimmshall Brook, with low lying land and roads expected to be most affected, particularly around Waterside, Lowbell Lane, London Colney and Warrengate Road.



Further flooding is possible throughout the afternoon as river levels will rise due to heavy rainfall.



We are monitoring rainfall and river levels and closely monitoring the situation. Monitor local water levels and weather conditions.



Avoid using low lying footpaths and any bridges near local watercourses.



This message will be updated by 9:00 AM on Monday 7th July, or as the situation changes.