New warnings have been issued for Croston after fears a river banking could collapse.
Police said they were concerned about the potential for more flooding in the area, following severe rainfall across the county on Boxing Day.
And the Environment Agency has issued three severe flood warnings for the wider Croston area.
Despite a break in the wet weather, a banking in the River Douglas, north of the railway line and Rufford, is in danger of collapse.
Officers were assessing the situation, but there might be the possibility of a further flood risk.
Emergency services including the police and fire brigade were at the scene on Monday morning, with support from the Environment Agency and local authorities.
They say the warning has been issued as a precautionary measure.
Chief Insp Mark Baines, of Lancashire Police, said: “At this time there is a very specific issue with the River Douglas south of Croston.
“We are currently monitoring the situation.
“The banking has not failed but there is concern this may happen which could affect residents in the area. Everyone is prepared.
“This issue is not due to any more rain, it is more to do with damage caused to the banking.
“Everything possible is being done to prevent further flooding following the events of Boxing Day and Sunday.”
Police said they were concerned about the impact of Monday’s high tide, expected at about 1pm, with extra resources being deployed and a command centre still running at police headquarters.
The latest update follows the loss of power to 500 properties in Croston reported on Sunday morning after a substation flooded.
An Electricity North West spokesman confirmed on Monday that power had been restored to all but 58 homes.
A catering van is to be stationed in Yarrow Close in Croston on Monday.
In St Michael’s, Whalley and Ribchester, the water is receding. But there is a lot of flood damage and so roads are difficult to access.
And the county is braced for more bad weather, with a yellow, be aware, warning for both rain and wind on Wednesday, with 60-80mm of rain over higher ground and gusts up to 70mph possible.