Dozens of homes flooded and hundreds needed to be rescued after the River Steeping in Wainfleet overflowed after heavy rainfall.
The RAF were called in to help and Chinook helicopters dropped bags of gravel to try and repair the breach, which flooded more than 70 homes.
Lincolnshire County Council warns up to 720 people could be affected after the town had more than two months of rain in just two days
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