People are being urged to take notice of changes to flood warnings over the bank holiday weekend.
Met Office forecasts suggest Lincolnshire will be dry on Saturday and Sunday.
But with rain due in the days before, the Environment Agency has advised people to monitor its website for updates.
Flooding has already affected homes in Lincoln while areas of the city were temporarily put on alert.
County council tankers were called in to pump water from St Catherine's Grove, Lincoln, on Monday, April 30.
Resident Michael Gregory, 74, said: "The water was on the verge of coming into our house. We moved TVs and computers off the ground floor just in case."
Places with flood alerts, as of the afternoon of Wednesday, May 2, were Heighington, Dunston, Blankney Becks, Billinghay Skirth and River Slea.
Dunston, Scopwick, Digby, Ruskington, South Kyme, Sleaford, Ancaster, Wilsford, and Kelby were also included.
A "flood alert" is put out when there is a risk of flooding in certain areas. And a "flood warning" is issued when flooding occurs.
Rita Penman, spokesman for the Environment Agency, said: "Flood alerts, particularly in the North Kesteven area, warn of possible flooding of roads and low lying land as the watercourses in that area are slow flowing and take a while to lower."
Lincolnshire County Council advises people to buy sandbags if they are worried about their properties.
Head of emergency planning David Powell said: "If there is wider flooding in the county, there are limited supplies of sandbags that councils distribute to help protect vulnerable people as a priority.
"Depending on the nature of the flooding, all district councils and some parish councils can also distribute sandbags to residents.
"In reality it would not be possible to protect every single person's home from flooding with sandbags and better options could be to pump water away from an area, or make urgent repairs."
To monitor flood warnings, visit www.environment- agency.gov.uk or call 0845 988 1188.
For information on sandbags, visit www.lincolnshire.gov.uk/residents/community-and-living/community-safety/emergency-planning/flooding