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Floods: Causes and Effects

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Questions and Answers

What is the estimated cost of lost output caused by floods in the contiguous United States in 2022?

$26.8 billion (correct)

$100.8 billion

$50.8 billion

$10.8 billion

What is a floodplain?

A low-lying area of land adjacent to a body of water (correct)

A riverbed that often dries up

A coastal area prone to tsunamis

A high-lying area of land adjacent to a body of water

What is the minimum area of land that must be covered with water to be considered a flood?

Two acres (correct)

Five acres

One acre

Ten acres

Why is it often unwise to build in unmitigated floodplains?

Because of the high likelihood of destruction Signup and view all the answers

What is a common source of flooding?

Hurricanes Signup and view all the answers

What can happen to the water level in a flood?

It can increase suddenly Signup and view all the answers

What is a potential benefit of flooding?

Agricultural benefits Signup and view all the answers

What was the cost of damage caused by Tropical Storm Allison in 2001?

$5 billion Signup and view all the answers

What is a storm surge?

A pile of water pushed onto shore by the force of a storm Signup and view all the answers

What is the main difference between a flood and a flash flood?

The size of the flood Signup and view all the answers

What is river flooding also known as?

Fluvial flooding Signup and view all the answers

What is the main cause of groundwater flooding?

Rising levels of groundwater due to high levels of rain or snowmelt Signup and view all the answers

What is sewage flooding often a result of?

Blocked or inoperable sewage systems Signup and view all the answers

What is the purpose of levees in preventing floods?

To raise the shoreline of a body of water Signup and view all the answers

Why can't floods be truly prevented?

Because disrupting the water cycle is not possible Signup and view all the answers