A 4,000-km^2 watershed receives 102cm of precipitation in one year.The avg. flow of the river draining the watershed is 34.2 m^3/s.Infiltration is est. to be 5.5 x 10^(-7) cm/s andevapotranspiration is est. to be 40 cm/y. Determine the change instorage in the watershed over one year. The ratio of runoff toprecipitation (both in cm) is termed the runoff coefficient.Compute the runoff coefficient for this watershed.