Using only the inflow hydrograph from Example 4.7 (i.e., no precipitation), use HEC- HMS* (iwww.hec.iisace.army.mil/software/hec-hms/download.html) to route the hydrograph through a channel using the Muskingum-Cunge routing method, The channel has a trapezoidal cross section with a 3:1 side slope (horizontal: vertical), a Manning's roughness (n) of 0.039, and a bottom width of 8 meters. Assume there is no loss in the channel. What is the value of peak flow and when does it occur?
In problem 4.7
Time (hr) Inflow (m3/s)
0........................... 0
2........................... 5
4......................... 25
6......................... 50
8......................... 35
10....................... 21
12....................... 13
14..................... 7.5
16..................... 2.5
18........................ 0