FLASH FLOODS By Swetha Vontela - PowerPoint PPT Presentation
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FLASH FLOODS By Swetha Vontela
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Does a flood have anything to do with earthquakes and tsunamis ? ... The flood of Huang He river of 1887 killed over a million people ... – PowerPoint PPT presentation
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Title: 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
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