runoff from three
sub catchments A, B and C.
- Consider The Stream Network Shown In Figure 3 It Is Supplied By Runoff From Three Sub Catchments A B And C Using The 1 (69.55 KiB) Viewed 18 times
information given below,
determine the peak discharge at the outlet of subcatchment C.
Subcatchment width B = 200 m
Main stream length in each subcatchment = 150 m
Slope of main stream in each subcatchment = 0.01
Cr = 8 m/s
= 1.25
m = 1
c1=0.6049, c2 = 0.0123, c3 =0.3827
wx = 0.5, wt =0.3
Computation time step = 5 minutes
B C Figure 3: Stream network. The following hillslope supply hydrograph was simulated for subcatchment C during a storm event: Time (mins) Discharge from hillslope into stream (mm/hr) 0 0 5 35.1 10 92.9 15 110.3 20 36.4 25 9.4 30 1.4 35 0 The stream outflow hydrograph from subcatchments A and B during the same storm is identical: Time (mins) Stream outflow from A (m³/s) 0 0.00 5 0.63 10 1.42 15 1.89 20 1.25 25 0.93 30 0.39 35 0.09 40 0.00