Exam Hydrology & WR Eng Spring 2018 9, 2018 (8 10 AM) Full Name ve answers in sp
ID: 1743059 • Letter: E
Question
Exam Hydrology & WR Eng Spring 2018 9, 2018 (8 10 AM) Full Name ve answers in space provided; use additional sheet if required) nfo where applicable: 1 acre 43,560 ft: 1 hectare -10,000 m 1 foot 12 in; 1 m 100 cm 20) If i t rains 2.5 inches on a 25 acre watershed, what is the volume of rainfall excess if infiltration on the soil and evapotranspiration is estimated at 1.5 inches? What is the total volume of runoff? Express your answer in cubic feet. Assume that there is no other loss ( 1 acre =.43, 560 ft) (15 points)Explanation / Answer
Volume of runoff or rainfall excess= ( rainfall - infiltration)× area of watershed
={(2.5-1.5)/12)}×(25×43560)
=90750 cubic ft.