Chapter 6: Development of Water Sources Quiz
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Questions and Answers

What is rainwater harvesting?

  • The process of purifying rainwater for immediate consumption
  • The process of using rainwater to irrigate agricultural fields
  • The process of diverting rainwater away from buildings and houses to prevent flooding
  • The process of collecting and storing rainwater in a scientific and controlled manner for future use (correct)

    • In which areas can rainwater be an important source of water supply?

  • Areas with limited rainfall and abundant groundwater
  • Areas where rain is well distributed throughout the year and surface and groundwater are scarce (correct)
  • Areas with frequent floods and high groundwater levels
  • Areas with abundant surface water and groundwater

    • What is a cistern?

  • A system for diverting rainwater away from buildings
  • A watertight tank where rainwater is stored (correct)
  • A type of catchment area for rainwater collection
  • A device used to purify rainwater

    • Why should fibro-cement roofs be excluded for rainwater harvesting?

    <p>They have been identified as carcinogen initiators</p> Signup and view all the answers

    What is the purpose of interconnected catchments in rainwater harvesting?

    <p>To increase the overall catchment area for rainwater collection</p> Signup and view all the answers

    What is Level I service in relation to cisterns for rainwater harvesting?

    <p>Small-scale use of cisterns for individual homes</p> Signup and view all the answers

    What is the main benefit of rainwater harvesting?

    <p>Reducing soil erosion</p> Signup and view all the answers

    How does rainwater harvesting affect the ground water level?

    <p>It increases the ground water level</p> Signup and view all the answers

    What is the purpose of bypassing the first 5 to 10 minutes of rainwater in the collection process?

    <p>To remove pollutants washed from the catchment area</p> Signup and view all the answers

    How does rainwater harvesting help mitigate the effects of drought?

    <p>By providing an alternative water source during drought</p> Signup and view all the answers

    What is the recommended treatment for the cistern after every rain in rainwater harvesting?

    <p>Adding a chlorine compound of at least 5 mg/l chlorine</p> Signup and view all the answers

    How does rainwater harvesting contribute to reducing flooding in low-lying areas?

    <p>By reducing the soil erosion</p> Signup and view all the answers

    What is an important consideration for protecting a spring from biological contamination?

    <p>The presence of upstream settlements</p> Signup and view all the answers

    What should be done to obtain satisfactory water from a spring?

    <p>Eliminate surface water intrusion and prevent animals from gaining access to the spring</p> Signup and view all the answers

    How can you protect a spring from surface-water pollution?

    <p>By constructing a deep diverting ditch or equivalent around it</p> Signup and view all the answers

    What should be done if the water flows to the spring head through limestone or similar types of fissured rock channels?

    <p>It should be chlorinated regularly due to the likelihood of carrying pollutants</p> Signup and view all the answers

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