Myth: If an area has had a '100 year flood' within the past several years, the area is guaranteed to be safe from another flood for a few years.
Truth: The '100 year flood' is only a statistical tool used to judge flood potential for a given area — not any kind of statistical guarantee. In some areas of the country '100 year floods' have occurred three years in a row.

Myth: Flooding occurs only at low elevations along the coastlines.
Truth: Flooding is a result of elevation, drainage, soil type and surrounding development. It occurs along the coast and rivers as well as inland.

Myth: A couple inches of water usually doesn't cause much harm.
Truth: Six inches of fast-moving water can knock you off your feet; a depth of two feet will cause most vehicles to float.

Myth: If I know what the pavement hidden under the flood waters should look like, I can know how much water I would be attempting to drive through.
Truth: There is no guarantee that the roadway still exists under the water, or that the roadbed hasn't been undercut by the flood waters, just waiting for a little additional weight to make it collapse. If you cannot see the bottom of the flooded section, do not attempt to cross it!