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Related Flashcards
Cards In This Set
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What are the three most common types of flooding?
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Riverine, coastal, shallow
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Which type of flooding has accounted for the most flood related deaths in recent history?
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Flash Flooding
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What is a meander?
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It's a curve or turn in a river channel
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What's the major cause of coastal flooding?
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Storm surge
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What causes a tsunami?
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Underwater earthquakes or volcanoes
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List five types of special flood hazards covered in this course.
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Close basin lakes, Uncertian flow paths, Dam breaks, Ice jams, Mud flows
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List at least three benefits that floodplains, in a relatively undisturbed condition, actually contribute or could contribute to your community?
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There are a large number, depends on community...recreational, environmental
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What two problems result from floodplain development?
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Developent alters the floodplain and the dynamics of flooding.
Buiildings and infrastructure are damaged by periodic floods.
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What does wateshed develop do to flooding?
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The increase in impervious surface results in increased runoff and higher flood levels.
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What is one of the problems with constructing seawalls to protect buildings from flooding or erosion?
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It can accelerate eroion on properties at the end of the wall.
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What are the five main causes of flood damage?
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Hydrodynamic forces
Debris impact
Hydrostatic forces
Soaking
Sediment and contamination
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Standing water as little as ____ feet deep can collapse the walls of a frame house.
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3 feet
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What are some of the safey and health hazards that accompany floods?
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Disruption of public utilties
Electrocution
Contamination of water supplies
Fire
Animal carcasses, garbage and ponds that can become a breeding ground form germs and mosquitoes
Mold, mildew and bacteria
Contaminated air from dirty heating ducts
Stress and mental health problems
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Prior to the 1960's what was the primary way to reduce flood losses?
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Structural flood control projects
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What is the Unified National Porgam for Floodplain Managment's definition of "floodplain management?"
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A decision-making process that aims to achieve the wise use of the nation's floodplains
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