Flood Warning: River Mimram in Hertfordshire
Message Last Updated:
2025-03-12 17:26:00
Severity Last Changed:
2025-01-29 17:28:00
Flooding is affecting low lying land, roads and gardens close to the River Mimram, due to persistent rainfall in December and January, leading to high groundwater levels.
We are monitoring the flooding that is currently affecting the Fulling Mill Lane, Singlers Marsh, and Codicote Road areas in Welwyn.
There is elevated risk of flooding caused by water emerging from a third party blocked culvert. Flooding to homes and businesses is unlikely at this time, but there may be a risk to very low-lying properties or those with basements. River levels in other areas remain below levels of concern.
Avoid using low lying footpaths and any bridges near local watercourses and do not attempt to walk or drive through flood water. We are continuing to monitor the situation.
This message will be updated by 5pm, Wednesday 19th March 2025, or as the situation changes.
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