Question: A watershed is changed from rural to urban category over a period of time due to the development process. The effect of urbanization on storm runoff hydrograph of such watershed:
Options:
decreases the volume of runoff
increases the time to peak discharge
decreases the time base
decreases the peak discharge
🔑 Key Points
Concept:
→ Effect of urbanization on Hydrograph:
Urbanization of a rural watershed results in the following significant changes in the characteristics of the watershed:
Concept:
→ Effect of urbanization on Hydrograph:
Urbanization of a rural watershed results in the following significant changes in the characteristics of the watershed:
🌆 Development of roads surfaces, roofing on developed areas, etc reduces vegetative area which increases Impervious surface area causing lesser percolation/infiltration of water and higher runoff as shown in figure (1)