Experiment # 6
EFFECT OF UPPER-HALF URBAN CATCHMENT ON RUNOFF HYDROGRAPH
Object: To investigate the effect of upper-half urban catchment on run off hydrograph.
Apparatus: Basic hydrology tank and stopwatch.
Experimental Setup/ Methodology:
Permeability of the catchment can be reduced/eliminated by covering part/all of it with an impermeable plastic sheet.
The upper part of the catchment is covered with plastic sheet then runoff from plastic sheet is lost in the soil in the lower part.
Observations:
Rainfall intensity = ______ lit/min = ______ lit/sec;
Storm duration = ____ sec; Runoff step = _____ lit/sec
S. No. | Discharge (lit/sec) | Cumulative Time (sec) | S. No. | Discharge (lit/sec) | Cumulative Time (sec) |
Graphs:
A histogram and hydrograph are plotted from the runoff data of this experiment.
Results: