Q. 17) A 50-acre catchment containing cropland is converted ot a Qatar mail

retail conter. Which of the following statements is true concerning the impact on the runoff hydrograph?

a) The postdevelopment hydro graph peak will occur sooner than the predevelopment

hydro graph peak

o ine postdevelopment hydro graph peak will be higher than the predevelopment

hydro graph peak

c) The area under the postdevelopment hydrograph will be greater tha

the predevelopment hydro graphs

yarograph will be greater than the area under

d) All of the answers

e) None of the answer

Question

Engineering

Abbigail Brock

2 December, 10:10

Q. 17) A 50-acre catchment containing cropland is converted ot a Qatar mail

retail conter. Which of the following statements is true concerning the impact on the runoff hydrograph?

a) The postdevelopment hydro graph peak will occur sooner than the predevelopment

hydro graph peak

o ine postdevelopment hydro graph peak will be higher than the predevelopment

hydro graph peak

c) The area under the postdevelopment hydrograph will be greater tha

the predevelopment hydro graphs

yarograph will be greater than the area under

d) All of the answers

e) None of the answer

+2

Answers (1)

Know the Answer?

Simone Hanson · Answer 1

Option D

Explanation:

A post development hydrograph will have lower concentration time and lower infiltration losses and hence sooner peak and higher peak and more runoff or higher area under graph. Therefore, all the answers are correct hence option D