Hydropower Engineering past question

The water turbine at a hydel storage plant produces 1000 HP when working under a net head of 30 m and with an overall efficiency of 80%. The inflow in the reservoir during a year is given below:

Month	Jan	Feb	Mar	Apr	May	Jun	July	Aug	Sep	Oct	Nov	Dec
Q (Mm³)	90	80	73	80	70	98	120	80	96	105	100	75

Find, i) Minimum capacity required ii) Total quantity of the water wasted (Assume the reservoir is full in the beginning of the year). [4+4]