Floods can cause all sorts of water damage that needs to be properly dried or it will cause rotting and even mold. I&I Fire, Water and Mold have the specialized water and flood restoration training needed to restore your home to pre-flood condition.
Retaining walls can prevent a huge amount of damage from water draining to low areas.
Trees, bushes and plants around your property prevent erosion and absorb water.
Check with the local goverment and make sure the roads are properly draining in the right direction.
Keep electronics and any important valuables above ground level.