The River Lea at Harpenden and Wheathampstead is subject to a flood alert, with the Environment Agency (EA) warning that where it has breached its banks, standing water could remain for some time.
The river’s flood status changed at 8.55pm yesterday (23) because of steady rain falling Monday afternoon, resulting in rising water levels.
An average rainfall of 15mm fell in 24 hours.
The EA said the upper River Lea reacted to this in some locations, but that water levels are now starting to drop and should shortly return to normal levels.
A flood alert issued yesterday afternoon for the Upper River Colne in Colney Heath and London Colney and Tykes Water (Radlett Brook) in Radlett remains.
The agency said that steady rain falling since Monday had also resulted in river levels rising in these three villages.
Levels have peaked in the upper reaches in areas such as Waterend.
The EA said: “There may be a small further increase in Colney Heath and London Colney as the peak moves downstream.
“However, levels should start to peak here late morning/lunchtime.”
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