S.O.S
2007-11-01 15:30:59 · 6 answers · asked by crea 1 in Science & Mathematics ➔ Weather
Very heavy rain in a short period causing creeks or drains to fill faster than they can carry the water away.
2007-11-01 20:16:03 · answer #1 · answered by tentofield 7 · 1⤊ 0⤋
It is the rain falling in greater quantity than the drainage (either natural or man made) can accommodate during the time it falls.
The problems are really compounded by humans. As Rikounet pointed out, construction often changes the amount of rainfall required to and increase the runoff urban areas due to the increase in paved surfaces. Also, as this increases, more and faster runoff puts a strain on storm runoff systems that may date back 40 or 50 years and were not intended to handle the runoff from a much larger area.
Some cities have recognized the problem and taken steps to minimize the problem, but most have not.
The other problem often seen is that people will build along side the babbling brooks not realizing they can become an occasionally raging river in a very short period of time.
2007-11-02 03:45:18 · answer #2 · answered by Water 7 · 1⤊ 0⤋
As people construct buildings, parking lots and roads, the underlying earth cannot absorb the water anymore. Heavy rain runs off driveways, roads, parking lots and rooftops and needs to be collected by sewage systems. There hardly is any flash flooding in natural environments since vegetation and earth absorb most of the water.
2007-11-02 02:13:29 · answer #3 · answered by Rikounet 4 · 0⤊ 0⤋
It's when a lot of people all together take their clothes of and run down the streets exposing themselves to each other.
2007-11-02 00:21:09 · answer #4 · answered by simsjk 5 · 2⤊ 0⤋
A lot of rain in a short period.
2007-11-01 16:10:07 · answer #5 · answered by stoneytreehugger 5 · 1⤊ 0⤋
Cloud burst or tsunami
2007-11-01 20:54:01 · answer #6 · answered by Arasan 7 · 0⤊ 0⤋