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Groundwater levels affecting the Fulling Mill Lane, Singlers Marsh, and Codicote Road areas of Welwyn are continuing to reduce.
No further flooding to low lying land, roads and gardens is expected. We have seen low rainfall totals over previous weeks, and the forecast is expected to remain dry over the coming days.
There is no longer a threat of flooding, though standing water and debris may still remain.
Continue to take care on riverside roads and footpaths and don't put yourself in unnecessary danger.
We will continue to monitor the situation and will issue further alerts if necessary.
Information supplied by the Environment Agency
This information last updated 10:59am, Thursday 29th May 2025.
This page is a dedicated URL for a specific message issued at a particular time. You should not bookmark this page, as the current situation may have changed since this message was issued.
Warning no longer in force
Thu 29 May 2025, 10:59am
Flood alert
Wed 28 May 2025, 3:11pm
Flood alert
Wed 21 May 2025, 1:08pm
Flood alert
Wed 14 May 2025, 4:14pm
Flood alert
Wed 7 May 2025, 2:59pm
Flood alert
Wed 30 Apr 2025, 2:03pm
Flood alert
Wed 23 Apr 2025, 10:44am
Flood alert
Wed 16 Apr 2025, 2:58pm
Flood alert
Wed 9 Apr 2025, 1:28pm
Flood alert
Wed 2 Apr 2025, 2:22pm
The River Mimram at Whitwell, Welwyn, Tewin, Hertingfordbury and Hertford
Region: Herts and North London
Country: England
Counties covered: Hertfordshire
Watercourses covered: Mimram
The area bounded in blue on the map shows the area covered by flood alerts and warnings for River Mimram in Hertfordshire.
Note: the area shown on the map is the area covered by flood alerts and warnings. It is not a live map of current flooding. The area covered broadly equates to the area where the risk of flooding in any year is greater than 1% (the "hundred year" flood risk).
No current or recent warnings.
No current or recent warnings.
No current or recent warnings.
No current or recent warnings.
No current or recent warnings.