a) The average monthly inflow (cumecs) of a river are (45, 20, 30, 70…

Question

a) The average monthly inflow (cumecs) of a river are (45, 20, 30, 70, 40, 10, 100, 120, 80, 65, 55, 50) in the months of January to December in a year. Draw the flow duration curve and power duration curve. Determine. (10)

i) Firm power

ii) Power at 90%

iii) 50% dependability

iv) storage required at 50% water availability

b) State briefly storage and pondage. What is the essential difference between the two, illustrate with a sketch. (10)