Fishlake and Bentley near Doncaster have been some of the worst affected areas after the river burst its banks last week when a month's worth of rain fell in a single day.
Around half the 700 residents of Fishlake, near Doncaster, left the village and those who stayed behind have faced waist-high floods.
The Environment Agency said it had more than 200 staff on the ground in South Yorkshire supporting communities affected by the flooding.
A flood disaster relief appeal has now been launched by the South Yorkshire Community Foundation and so far raised over £80,000. Donations of food, clothes and other essentials are being collected ready to be distributed.
It will support families and local people who have had to move out of their homes and whose property has been damaged by severe flooding.
The community and many businesses have rallied round to help those most affected.
The Prime Minister Boris Johnson is chairing a meeting of the Government's emergency committee COBRA today to discuss the region's flooding.