Torrential rain has caused flooding across large areas of northern England and Scotland, with some people forced to leave their homes.
The Environment Agency (EA) has issued scores of flood warnings and the Scottish Environment Protection Agency has five in place.
Residents in the Lancashire towns of Croston and Darwen have been evacuated after nearby rivers burst their banks.
The EA said it would be working through the night to clear blockages.
The agency has mobilised staff across the North West to monitor river levels and operate flood defences alongside the emergency services.
A spokeswoman said "a month's rain" was predicted to fall in 24 hours.
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