3. Design of Channels

Try these first

1. 1.

   What is a rigid boundary channel?

   Hint

   Think about materials that do not wear away quickly.

2. 2.

   Define seepage.

   Hint

   What happens when water leaks?

3. 3.

   What material is primarily used for rigid boundary channels?

   • Plastic
   • Concrete
   • Wood

   Hint

   Consider materials that withstand weathering.

4. 4.

   True or False: Evaporation is the largest contributor to canal losses.

   • True
   • False

   Hint

   Which loss is often significant due to the water’s interaction with the soil?

5. 5.

   Design a canal system using rigid boundary channels for a square plot of land (100m x 100m). Consider the crop water requirements and overall losses.

   Hint

   What are the expected crop water requirements per square meter?

6. 6.

   Critique the design of an existing canal system that has faced consistent water logging. Identify the potential causes and suggest substantial design improvements.

   Hint

   Think about environmental factors that may contribute to water retention in soil.