3- (A) The mean annual precipitation (P) is 700 mm. The mean annual potential evapo-transpiration(PET) is 200 mm. Estimate total runoff, runoff coefficient and actual evaporation. (4 pts) (B) Now,

assuming the size of the watershed storage equal to 400 mm, and assuming that rainfall and ET occurs at different times, with rainfall preceding ET; estimate the total runoff and actual evapo-transpiration. (3 pts) (C) Now, assuming the size of the watershed storage equal to 100 mm, and assuming that rainfall and ET occurs at different times, with rainfall preceding ET; estimate the total runoff and actual evapo-transpiration. (3 pts)