Ch 5: Floods

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What can cause rapid floods in regions with heavy snowfall?

Urbanization

Low-lying areas

Deforestation

Snow melting (correct)

What is a key physical cause of flash floods according to the text?

High rainfall (correct)

Poor water management

Coastal flooding

Geographical relief

How can human activities like deforestation worsen flooding?

Decrease water infiltration

Increase water absorption

Enhance surface runoff

Increase soil erosion (correct)

What represents the delay between peak rainfall and peak discharge in hydrographs?

Lag time Signup and view all the answers

Which activity can accelerate runoff in urban areas?

Urbanization Signup and view all the answers

What can lead to downstream flooding due to faulty dams?

Rapid water release Signup and view all the answers

In what type of areas is flooding particularly susceptible due to slower river flows?

Low-lying areas Signup and view all the answers

What can overwhelm river capacities, leading to flash floods?

High rainfall Signup and view all the answers

What do hydrographs display according to the text?

River discharge over time Signup and view all the answers

What is a characteristic of flood impact on society?

Causing water-borne diseases like cholera Signup and view all the answers

Which approach is used in flood risk management to prevent overflow?

Constructing barriers and levees Signup and view all the answers

What is a strategy specifically mentioned for managing floods in urban areas?

Maintaining greenbelts and preserving wetlands Signup and view all the answers

Which aspect is crucial for managing floods in rural and informal settlements?

Preparing for emergency evacuations Signup and view all the answers

How does urbanization affect flood risks?

Increases discharge and shortens lag time Signup and view all the answers

What is one of the flood management strategies mentioned in the text?

Establishing efficient forecasting systems Signup and view all the answers

Why is it important to restrict development in known flood-prone areas?

To reduce the impacts of floods on infrastructure Signup and view all the answers

What is a specific action mentioned for managing floods in rural and informal settlements?

Providing flood risk education Signup and view all the answers

What type of systems are developed for efficient forecasting and alerting about floods?

Warning systems Signup and view all the answers

What human activity can exacerbate the frequency and severity of floods by increasing soil erosion and decreasing water infiltration?

Deforestation and poor farming Signup and view all the answers

What is a primary physical cause of coastal flooding as described in the text?

High tides and strong onshore winds Signup and view all the answers

How does urbanization contribute to flooding, based on the information provided?

By accelerating surface runoff on impermeable surfaces Signup and view all the answers

What impact can debris accumulation have on river flow and flooding?

Decrease river capacity Signup and view all the answers

In regions with heavy snowfall, what natural event can cause sudden floods?

Snow melting Signup and view all the answers

Why are low-lying areas particularly susceptible to flooding according to the text?

Due to slower river flows Signup and view all the answers

What tool is mentioned in the text as crucial for understanding river discharge patterns over time?

Hydrograph Signup and view all the answers

How can high rainfall lead to flash floods according to the text?

By overwhelming river capacities with intense rainfall Signup and view all the answers

What role do hydrographs play in understanding floods according to the text?

Influencing lag time between peak rainfall and peak discharge Signup and view all the answers

What is one of the impacts of urbanization on flood risks?

Shortens lag time, increasing flood risks Signup and view all the answers

What is a key characteristic of floods mentioned in the text?

Causes extensive damage to infrastructure Signup and view all the answers

Which strategy can help manage water flow and infiltration in urban areas according to the text?

Maintaining greenbelts and preserving wetlands Signup and view all the answers

What is a specific area strategy mentioned for managing floods in rural and informal settlements?

Providing flood risk education Signup and view all the answers

How can flood management be effective according to the text?

By combining physical infrastructure, education, planning, and policy-making Signup and view all the answers

What is a consequence of floods impacting society as mentioned in the text?

High damage to infrastructure and agriculture Signup and view all the answers

Why is it important to establish early warning systems in rural areas according to the text?

To warn residents of impending floods Signup and view all the answers

What strategy is specifically mentioned for managing floods in urban areas?

Prohibiting development on floodplains Signup and view all the answers

What is a long-term benefit of the integrated flood management approach as described in the text?

Contributing to both short-term and long-term resilience against future floods Signup and view all the answers

What is a characteristic of effective flood management strategies mentioned in the text?

Incorporating a combination of approaches including infrastructure, planning, education, and policy-making Signup and view all the answers

What can exacerbate floods by causing rivers to overflow due to obstructions in water flow?

Debris accumulation Signup and view all the answers

Which human activity mentioned in the text can enhance surface runoff and decrease water infiltration, thus contributing to flooding?

Deforestation Signup and view all the answers

What geographical feature makes low-lying areas particularly susceptible to flooding due to slower river flows?

Flat topography Signup and view all the answers

How can extended periods of intense rainfall overwhelm river capacities, leading to flash floods?

Decrease in soil erosion Signup and view all the answers

What is a potential consequence of urbanization on flood risks according to the information provided?

Accelerated runoff Signup and view all the answers

Which factor represents the delay between peak rainfall and peak discharge in hydrographs, influencing flood potential?

Lag time Signup and view all the answers

What is a primary physical cause of coastal flooding as described in the text?

Strong onshore winds Signup and view all the answers

What natural event can cause sudden floods in regions with heavy snowfall, as mentioned in the text?

"Rapid melting of snow" Signup and view all the answers

How does urbanization impact flood risks according to the text?

Enhances flood risks by shortening lag time and increasing discharge Signup and view all the answers

What is the primary purpose of flood defences as mentioned in the text?

To prevent overflow Signup and view all the answers

Why is policy development crucial in flood management according to the text?

To implement land-use policies restricting development in known flood-prone areas Signup and view all the answers

What impact does flood have on infrastructure and agriculture based on the text?

Leads to extensive damage to infrastructure and agriculture Signup and view all the answers

What strategy is specifically mentioned for managing water flow and infiltration in urban areas?

Improving drainage systems Signup and view all the answers

Which characteristic is associated with effective flood management strategies?

Integrating multiple approaches to mitigate flood impacts Signup and view all the answers

Why is it important to establish early warning systems in rural areas?

To reduce the impacts of floods Signup and view all the answers

Which aspect is crucial for managing floods in rural and informal settlements?

Establishing early warning systems Signup and view all the answers

What long-term benefit does the integrated approach to flood management provide?

Mitigating immediate effects of floods and enhancing long-term resilience against future floods Signup and view all the answers

What can lead to downstream flooding due to faulty dams?

Ensuring proper maintenance of dams Signup and view all the answers

Ch 5: Floods

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Questions and Answers

What can cause rapid floods in regions with heavy snowfall?

What is a key physical cause of flash floods according to the text?

How can human activities like deforestation worsen flooding?

What represents the delay between peak rainfall and peak discharge in hydrographs?

Which activity can accelerate runoff in urban areas?

What can lead to downstream flooding due to faulty dams?

In what type of areas is flooding particularly susceptible due to slower river flows?

What can overwhelm river capacities, leading to flash floods?

What do hydrographs display according to the text?

What is a characteristic of flood impact on society?

Which approach is used in flood risk management to prevent overflow?

What is a strategy specifically mentioned for managing floods in urban areas?

Which aspect is crucial for managing floods in rural and informal settlements?

How does urbanization affect flood risks?

What is one of the flood management strategies mentioned in the text?

Why is it important to restrict development in known flood-prone areas?

What is a specific action mentioned for managing floods in rural and informal settlements?

What type of systems are developed for efficient forecasting and alerting about floods?

What human activity can exacerbate the frequency and severity of floods by increasing soil erosion and decreasing water infiltration?

What is a primary physical cause of coastal flooding as described in the text?

How does urbanization contribute to flooding, based on the information provided?

What impact can debris accumulation have on river flow and flooding?

In regions with heavy snowfall, what natural event can cause sudden floods?

Why are low-lying areas particularly susceptible to flooding according to the text?

What tool is mentioned in the text as crucial for understanding river discharge patterns over time?

How can high rainfall lead to flash floods according to the text?

What role do hydrographs play in understanding floods according to the text?

What is one of the impacts of urbanization on flood risks?

What is a key characteristic of floods mentioned in the text?

Which strategy can help manage water flow and infiltration in urban areas according to the text?

What is a specific area strategy mentioned for managing floods in rural and informal settlements?

How can flood management be effective according to the text?

What is a consequence of floods impacting society as mentioned in the text?

Why is it important to establish early warning systems in rural areas according to the text?

What strategy is specifically mentioned for managing floods in urban areas?

What is a long-term benefit of the integrated flood management approach as described in the text?

What is a characteristic of effective flood management strategies mentioned in the text?

What can exacerbate floods by causing rivers to overflow due to obstructions in water flow?

Which human activity mentioned in the text can enhance surface runoff and decrease water infiltration, thus contributing to flooding?

What geographical feature makes low-lying areas particularly susceptible to flooding due to slower river flows?

How can extended periods of intense rainfall overwhelm river capacities, leading to flash floods?

What is a potential consequence of urbanization on flood risks according to the information provided?

Which factor represents the delay between peak rainfall and peak discharge in hydrographs, influencing flood potential?

What is a primary physical cause of coastal flooding as described in the text?

What natural event can cause sudden floods in regions with heavy snowfall, as mentioned in the text?

How does urbanization impact flood risks according to the text?

What is the primary purpose of flood defences as mentioned in the text?

Why is policy development crucial in flood management according to the text?

What impact does flood have on infrastructure and agriculture based on the text?

What strategy is specifically mentioned for managing water flow and infiltration in urban areas?

Which characteristic is associated with effective flood management strategies?

Why is it important to establish early warning systems in rural areas?

Which aspect is crucial for managing floods in rural and informal settlements?

What long-term benefit does the integrated approach to flood management provide?

What can lead to downstream flooding due to faulty dams?

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