1.3. Key Considerations

Try these first

1. 1.

   What is a main canal's function?

   Hint

   Think about which canal is the primary water source.

2. 2.

   Name one cause of water logging.

   Hint

   Consider irrigation practices.

3. 3.

   What is the primary function of a main canal?

   • To distribute water to the fields
   • To carry system's water from headworks
   • To control drainage

   Hint

   Think of the canal's role in the larger water distribution network.

4. 4.

   True or False: Evaporation losses are typically greater than seepage losses.

   • True
   • False

   Hint

   Consider which type of loss is most significant in irrigation.

5. 5.

   Propose a canal system design for an area prone to water logging. Include strategies to mitigate this issue.

   Hint

   Focus on how water movement and positioning affect crop health.

6. 6.

   Calculate the required design discharge for a region with 100 hectares of crops needing 5 mm of water per day, considering a 20% loss.

   Hint

   Consider conversion of units and incorporation of losses.