Flooding along rivers is a natural and inevitable part of life. Some floods occur seasonally when winter or spring rains, coupled with melting snows, fill river basins with too much water, too quickly. As land is converted from fields or woodlands to roads and parking lots, it loses its ability to absorb rainfall. Urbanization increases runoff 2 to 6 times over what would occur on natural terrain. During periods of urban flooding, streets can become swift moving rivers, while basements can become death traps as they fill with water.
Same principals apply as with flash floods.
Boil drinking water before using. Wells should be pumped out and the water tested for purity before drinking. Seek necessary medical care at the nearest hospital. Assistance will be available through local emergency agencies. Do not visit disaster areas.