A flash flood is a rapid flooding of geomorphic low-lying areas: washes, rivers, dry lakes and basins. It may be caused by heavy rain associated with a storm, hurricane, tropical storm, or meltwater from ice or snow flowing over ice sheets or snowfields. Flash floods may occur after the collapse of a natural ice or debris dam, or a human structure such as a man-made dam, as occurred before the Johnstown Flood of 1889. Flash floods are distinguished from a regular flood by a timescale of less than six hours. The temporary availability of water is often utilized by foliage with rapid germination and short growth cycle, and by specially adapted animal life.
Read more about Flash Flood: Causes, Hazards, Significant Flash Floods
Famous quotes containing the words flash and/or flood:
“The legislator must be in advance of his age.
Across the mind of the statesman flash ever and anon the brilliant, though partial, intimations of future events.... Something which is more than fore-sight and less than prophetic knowledge marks the statesman a peculiar being among his contemporaries.”
—Woodrow Wilson (1856–1924)
“My ark sings in the sun
At God speeded summer’s end
And the flood flowers now.”
—Dylan Thomas (1914–1953)