A small catchment area 300 km2 received a rainfall of 15cm in 1 hour, due to a storm draining the catchment was dry before the storm and experienced a runoff lasting for 5 hours with an average discharge Value of 3 m3 /sec. The stream was given dry after the runoff event. (a) What is the amount of water in cm3 which was not available to runoff alone to combined effect of infiltration, evaporation and transpiration. (b) What is the ratio of total and direct runoff to precipitation.

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