Flood Risk Management Quiz

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What is a potential drawback of modifying buildings to withstand flooding?

It requires minimal financial investment.
It provides a false sense of security. (correct)
It effectively eliminates flood risk.
It reduces local flood risk significantly.

How does increased impermeable surfaces affect flood risk?

It increases flood risk in urban areas only.
It has no impact on flood risk.
It increases the risk by allowing more water absorption.
It reduces flood risk by preventing water absorption. (correct)

What is a consequence of the urban area expansion limitation?

Urban areas can grow indefinitely.
Building sites become more plentiful.
It may exacerbate issues in existing structures. (correct)
It increases available land for farming.

What is a benefit of enhanced vegetation in flood management?

It reduces soil erosion. (B) Signup and view all the answers

What impact does reduced land availability have on farming?

It decreases farming opportunities. (B) Signup and view all the answers

What is one benefit of issuing warnings for flooding?

Warnings provide time to evacuate or prepare. (B) Signup and view all the answers

How does the presence of vegetation in a river valley contribute to flood risk management?

Reduces soil erosion and flood risk. (A) Signup and view all the answers

What is a disadvantage of flood preparation measures?

They may create a false sense of security. (B) Signup and view all the answers

What is a consequence of expensive modifications aimed at reducing flood risk?

Limited ability to modify existing structures. (C) Signup and view all the answers

What effect can a lack of action on flood prevention have on local flood risk?

It can increase local flood risk. (A) Signup and view all the answers

What is the primary benefit of flood warnings and preparation?

They give people time to mitigate flood damage. (D) Signup and view all the answers

What does flood plain zoning aim to achieve?

Prevent construction in flood-prone areas. (B) Signup and view all the answers

How does planting trees help in reducing flood risk?

It increases interception of rainwater. (D) Signup and view all the answers

What is one of the primary effects of river restoration?

Natural flooding of the flood plain reduces downstream flood risks. (B) Signup and view all the answers

What is a benefit of trees in river valleys beyond flood mitigation?

They provide habitats for wildlife. (C) Signup and view all the answers

What is the primary function of flood warnings and preparation?

To give people time to prepare for a flood (A) Signup and view all the answers

Which of the following is a disadvantage of flood plain zoning?

Limits urban expansion in areas with few building sites (A) Signup and view all the answers

How does planting trees help in flood mitigation?

By enhancing interception of rainwater (C) Signup and view all the answers

What is a key benefit of river restoration?

It maintains the natural flow of the river (D) Signup and view all the answers

What is one potential drawback of flood warnings and preparation?

They can provide false security (D) Signup and view all the answers

Which benefit is associated with planting trees in river valleys?

Reduces soil erosion (A) Signup and view all the answers

What is a disadvantage of the river restoration method?

Increases the risk of flooding in urban areas (C) Signup and view all the answers

Why might flood plain zoning not be effective in some areas?

It cannot address existing buildings in flood zones (A) Signup and view all the answers

Impermeable Surfaces and Flood Risk

Creating more impermeable surfaces, such as roads, reduces flood risk by preventing water from soaking into the ground.

Reduced Discharge and Flooding

Reducing the volume of water flowing through a river reduces flooding downstream.