Do not walk through flowing water. Drowning is the number one cause of flood deaths, mostly during flash floods. Currents can be deceptive; 6 inches of moving water can knock you off your feet. If you walk in standing water, use a pole or stick to ensure that the ground is still there.
Do not drink or eat, even after boiling, anything that may have come in contact with floodwater. Floodwater is a breeding medium for bacteria and contains human, animal and industrial wastes. Remember that your tap water, whether it comes from a well or a public water source, is contaminated after a flood.
Look out for animals, especially snakes. Small animals that have been flooded out of their homes may seek shelter in yours. Use a pole or a stick to poke and turn things over and scare away small animals.
Look before you step. After a flood, the ground and floors are covered with debris including broken bottles and nails. Floors and stairs that have been covered with mud can be very slippery. Even roads may be weak.