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Flood Warning: Upper River Colne and Radlett Brook

Message Last Updated:
2025-11-13 16:09:00

Severity Last Changed:
2025-11-13 16:09:00

Forecast rising river levels overnight may lead to flooding. 

Flooding is possible on 13 November 2025 from 11:45 PM onwards 

Locations most affected will be low lying land and roads near rivers. This includes areas in and near Waterside, Lowbell Lane, London Colney, and Warrengate Road. Further heavy rainfall is forecast throughout tomorrow into Saturday 15th November. 

We are monitoring rainfall and river levels and clearing blockages from debris screens 

Monitor local water levels and weather conditions and avoid using low lying footpaths and any bridges near local watercourses 

This message will be updated by 10:00AM on 14 November 2025 or as the situation changes.