6.1. Purpose

Try these first

1. 1.

   What type of canal is responsible for transporting water without direct irrigation?

   Hint

   Think about the role of canals in irrigation systems.

2. 2.

   Name one cause of water logging in irrigation.

   Hint

   Consider the effects of excessive irrigation.

3. 3.

   What does a distributary canal primarily do?

   • Carries water from headworks
   • Supplies water directly to fields
   • Reduces evaporative loss

   Hint

   Think of how water reaches the fields.

4. 4.

   True or False: Installing a concrete lining in a canal can increase water efficiency.

   • True
   • False

   Hint

   Consider the benefits of lining canals.

5. 5.

   Design a canal system to irrigate a field of 100 hectares considering seepage rates, expected losses, and irrigation needs. What factors must be taken into account?

   Hint

   Consider both the dimensions of the field and the efficiency factors discussed in class.

6. 6.

   Evaluate the impact of poor drainage on crop yield in a region relying heavily on irrigation. What strategies can improve productivity?

   Hint

   Reflect on the causes and effects we previously discussed regarding water logging.