2.2. Methods of Loss Estimation

Try these first

1. 1.

   What is the largest contributor to canal losses?

   Hint

   Think of where water escapes from a canal.

2. 2.

   Name one field method for estimating water loss.

   Hint

   This method involves standing water.

3. 3.

   What method can be used to estimate canal seepage losses?

   • Empirical formulas
   • Guessing
   • Field observation

   Hint

   Remember the established equations we discussed.

4. 4.

   Is evaporation a major contributor to canal losses?

   • True
   • False

   Hint

   Think about which loss occurs most frequently.

5. 5.

   If a canal has a discharge of 10 cumec and loses 30% to seepage and evaporation combined, how much water is effectively delivered to the fields?

   Hint

   Calculate the losses based on the percentage given.

6. 6.

   A 200-hectare agricultural land requires 6 mm of water per day. If the estimated losses are 15%, what is the total design discharge needed?

   Hint

   Don't forget to convert the units properly.