Revision Quiz: Flood Management Strategies

Which flood management strategy is shown in the image?

• Construction of Levees

• Channel Improvement

• Elevated Properties

• Land Use Zoning

Which of the following statement(s) best describe channel improvement?

• Channel improvement helps to increase channel capacity to transport floodwaters away more efficiently

• Channel improvement will help to prevent rainfall from accumulating as surface runoff.

• Channel improvement involves widening and deepening of the river channel

• All of the above

Why is channel improvement a desirable strategy to be used to manage floods in Singapore?

• It is affordable

• Singapore has many existing canals and drains that must be improved on

• It allows urban development to take place on land adjacent to river channels

• It is the best method to manage flash floods

What is one disadvantage of implementing channel improvement strategies?

• May lead to flooding issues upstream or downstream

• Requires a long period of time to construct

• There is a limit to channel widening and deepening because of existing soil conditions

• Not feasible in areas with no existing canals/rivers

Minimum platform level(s) are most commonly used to manage _______________ floods.

• Coastal

• River

• Flash

• Storm

Under what scenario do we need to make changes to the minimum platform level(s) to be constructed?

• When buildings require regular maintenance

• When channel improvement is not possible

• When properties are located adjacent to water bodies

• When there are changes to the highest recorded flood level

The highest water level recorded during a flood along Orchard Road was 30cm. What should be the minimum height of the raised platform level of buildings along Orchard Road?

• 10cm

• 20cm

• 30cm

• 50cm

What is the MAIN purpose of evacuation drills?

• To prevent floods from occurring

• To protect existing infrastructure from being affected by floods

• To ensure people are familiar with the proper steps to take when flood risk is high

• To warn people that flood risk is high

What is the main challenge of implementing evacuation drills?

• Cities do not have readily available flood evacuation plans

• Lack of citizen participation

• Evacuation plans regularly change due to continuous development

• Insufficient time to evacuate during flash floods

Where would be a safe location to evacuate to in the event of floods?

• On rooftops

• Stadiums

• Atop a hill/elevated ground

• Underground Tunnels