There are flood warnings in place for River Lostock, Shaw Brook and Bannister Brook at Leyland.
Heavy rain has lashed Preston and South Ribble throughout Tuesday (6 October) morning.
Rainfall levels of 20mm in three hours have been attained and river levels are expected to reach flood warning levels.
These levels will remain high throughout the day, say the Environment Agency who have issued the flood warning.
Read more: Coronavirus testing site opens in Leyland
Incident response staff are continuing to monitor river levels and the weather forecast.
See the latest weather forecast for your area by entering your postcode below
Read more: Latest news and updates from Blog Preston