FLASH FLOODS By Swetha Vontela

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FLASH FLOODSBy Swetha Vontela
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Rules - when caught in flood

• Get to higher ground immediately
• Never cross running flood water
• Be especially careful at night

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Flood images
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Flood images
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Hydrology

• Science that deals with the waters of Earth-
  their properties, behavior and distribution
• People how use this science are called
  Hydrologists

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Hydrologist - tools

• Rain gauge weighs and charts rainwater as it
  falls keeping a record on a paper
• Snow tube tools used to insert into snow to get
  a sample and weighed to determine the water
  equivalent
• Gauging stations to measure the stream flow of
  water that causes floods
• Satellite Images provide changes in streams on
  land which predict floods

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Does a flood have anything to do with earthquakes
and tsunamis ?

• Yes, because those things cause floods.
• Some other causes are soil erosion and too much
  precipitation (snow and rain)

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Flash Flood - Facts

• Flash floods kill more people than Hurricanes
• Water moving at 4 miles per hour exerts a force
  of about 66 pounds on every square feet of
  anything it encounters

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Is flood water fresh water or salt water?

• If you guessed fresh water you are mostly right.
• Floods usually come from a body of freshwater
  caused by precipitation
• If you guessed salt water you were right in one
  case
• Floods caused by tsunamis are salt water

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What are one of the most destructive floods ever
recorded?

• The flood of Huang He river of 1887 killed over a
  million people
• People built levees to raise the bank but it
  still failed
• The Huang He river is called the river of sorrow
  because it caused floods frequently

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Do you think floods are big killers in America?

• If you said no, you were wrong
• Floods are the second biggest natural killers in
  America
• The average killed every year is 84
• The biggest natural killer is Hot weather which
  kills an average of 237 people every year