Understanding Floods and Their Impact

Floods are the most deadly and destructive natural disasters in the U.S., occurring anywhere and anytime. Human settlement in coastal and floodplain areas increases flood risks. Floods can result from various causes, including flash floods, heavy rains, and storm surges. Historical events like the Mississippi flood of 1993 and Hurricane Katrina highlight the devastating impact of floods. Future risks include rising sea levels and changing weather patterns, emphasizing the need for preparedness.

Which natural disaster has caused the most death and destruction in the U.S. over the past century?

• Tornadoes

• Wildfires

• Floods

• Earthquakes

Why are floods becoming more likely in certain areas?

• Due to increased rainfall

• Because of population growth in coastal and floodplain areas

• Because of deforestation

• Due to global warming

How did farmers historically benefit from seasonal floods?

• By using them for fishing

• By using them for transportation

• By using them to generate electricity

• By using them to irrigate and fertilize their lands

What is a common cause of flash floods?

• Gradual snowmelt

• Sudden storms causing torrential downpours

• Volcanic eruptions

• Earthquakes

What can happen when water levels rise more than the ground can absorb?

• A landslide occurs

• An earthquake occurs

• A flood occurs

• A drought occurs

What was a significant factor in the Great Mississippi Flood of 1993?

• A tsunami

• A volcanic eruption

• A hurricane

• Failure of levees

How many homes were affected by the Great Mississippi Flood of 1993?

• 10,000 homes

• 56,000 homes

• 500 homes

• 100,000 homes

What percentage of New Orleans was submerged during Hurricane Katrina?

• 70%

• 80%

• 60%

• 50%

What was a unique factor about New Orleans that contributed to the disaster during Hurricane Katrina?

• It is located on a mountain

• It lies below sea level

• It is surrounded by deserts

• It has a very dry climate

What future risks are mentioned in relation to floods?

• Stable rain patterns

• Eroding coastlines and changing weather patterns

• Decreasing sea levels

• Increasing snowpacks