Hose down the basement floor once most of the water has receded. This will rid the floor of any dirt that may have backed up the sewer (for those who do not have overhead sewers.) Direct the water towards the floor drain.
Mop the floor with a disinfectant if you have had a sewer backup. Be sure to wear rubber gloves and also shoes to avoid any contact with the sewage.
Squeegee the floor, directing the water towards the drain. You may have to do this several times, as sometimes the water will puddle in low spots on the floor.
Place a couple of fans in the basement to dry up the water. Also, open the windows if you have any to get a cross breeze. This will also help dry up the floor.
Start your dehumidifier, making sure that you have the hose from the dehumidifier going into the drain. The dehumidifier will take the water out of the air and help to dry up the basement.