Residents are given bags and sand is available, but they need to bring shovels and be prepared to fill the bags.
Due to hazardous road conditions, the Florida Forest Service has closed three state forests in Nassau County: Cary, Four Creeks and Ralph E. Simmons Memorial.
For any other information, Nassau County residents can call the Emergency Operations Center at 904-548-4980.
Properties near Alligator Creek continue to experience flooding.
The Red Cross has opened a shelter Starke Elementary School at 1000 Wes Weldon Street.
Debby has dropped up to two feet of rain in some parts of north Florida and southeast Georgia promises to bring more of the same Tuesday as it moves slowly on a path forecast to take it over the state and into the Atlantic Ocean by Thursday.
"In all my years I've lived in Baker County all my life and I don’t believe I've ever seen the rain come down like this," Baker County Sheriff Joey Dobson said. "I don't think I've ever seen I-10 closed, at least for water anyway."
Just west in Columbia County, emergency management officials say numerous roads are closed and ask people to stay off the road if possible. Florida Gateway College closed Tuesday because its entrance road is flooded.
The National Hurricane Center said Debby was about 65 miles west-northwest of Cedar Key and moving east at near 6 mph. It had maximum sustained winds near 40 mph.