River Floods

Which of the following would decrease lag time from peak rainfall to peak discharge?

• Deforestation

• Afforestation

• Permeable rocks

• Sandy soils

Which of the following is a human cause of flooding?

• Steep slopes

• Urbanisation

• Vegetation

• Climate

Which of the following is a physical cause of flooding?

• Heavy rain

• Efficient sewage system

• Deforestation

• Bridge buiding

Pick the social impact of river floods.

• Housing repairs

• Deaths

• Losing a job

• Soil erosion

Pick the economic impact of river floods.

• It is hard to move around

• People become homeless

• Floods create or replenish wetland habitats

• Business closed for refurbishment

Pick the environmental impact of river flooding.

• Insurance premiums go up significantly.

• Wildlife can be killed.

• Electricity is cut off

• An increase in flood defence systems.

Pick the correct definition: Hard engineering.

• Building large, man-made structures.

• Not building on the floodplain.

• Working with the natural landscape. Do not physically alter the river.

• Allocating budgets to recover from future flood events.

Which of the following is NOT an example of hard engineering?

• Building a dam.

• Straightening the river.

• Afforestation.

• Constructing spill over lakes.

Which of the soft engineering approaches listed below involves thinking about how areas of land are used and by whom?

• Laissez faire

• Zoning

• Sectioning

• Proportion thinking

Apart from preventing flooding, what is another benefit of constructing a dam.

• Producing hydroelectric power.

• Provides drinking water for urban settlements.

• Creates a lake for recreation and tourism.

• All of the options.