8.5.1 Using the 4-hr unit hydrograph developed in problem 8.3.1, use the S-curve method to develop the 8 -hr unit hydrograph for this
200km^(2)
watershed. 4hr-unit hydrograph: \table[[Time(Hr),4-hr unit hydrograph],[1,0],[2,1.805054152],[3,7.220216606],[4,13.53790614],[5,19.85559567],[6,27.07581227],[7,31.58844765],[8,27.97833935],[10,9.025270758],[11,0.902527076],[9,]]