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Type. . . . SCS Unit Hyd. Summary <br /> Name-. . . Z-2-01 Event: 25 yr <br /> File. . . . .\sample\C15210.PPK <br /> SCS UNIT HYDROGRAPH METHOD <br /> STORM EVENT: 25 year storm <br /> Duration = 24. 0000 hrs Rain Depth = 5.7500 in <br /> Rain Dir = . \util\ <br /> Rain File -ID = SCSTYPES.RNF - Type= 24hr <br /> Unit Hyd Type = Default Curvilinear <br /> HYG Dir = . \sample\ <br /> HYG File - ID = C15210.HYG - Z-2-01 25 <br /> Tc (Min. Tc) _ .0833 hrs <br /> Drainage Area = .126 acres Runoff CN= 98 <br /> Computational Time Increment = .01111 hrs <br /> Computed Peak Time = 12 .0952 hrs <br /> Computed Peak Flow = .61 cfs <br /> Time Increment for HYG File = .0200 hrs <br /> Peak Time, Interpolated Output = 12.1001 hrs <br /> Peak Flow, Interpolated Output = . 61 cfs <br /> DRAINAGE AREA <br /> ------------------- <br /> ID:None Selected <br /> CN = 98 <br /> Area = .126 acres <br /> S = .2041 in <br /> 0.25 = .0408 in <br /> Cumulative Runoff <br /> ------------------- <br /> 5.5121 <br /> ----------------- <br /> 5.5121 in <br /> .058 ac-ft <br /> HYG Volume. . . .058 ac-ft (area under HYG curve) <br /> ***** UNIT HYDROGRAPH PARAMETERS ***** <br /> Time Concentration, Tc = .08330 hrs (ID: None Selected) <br /> Computational Incr, Tm = .01111 hrs = 0.20000 Tp <br /> Unit Hyd. Shane Factor = 483 .432 (37 .46% under rising limb) <br /> K = 483 .43/645.333 , K = .7491 (also, K = 2/ (1+(Tr/Tp) ) <br /> Receding/Rising, Tr/Tp = 1.6698 (solved from K = .7491) <br /> Unit peak, qp = 1.71 cfs <br /> Unit peak time Tp = .05553 hrs <br /> Unit receding limb, Tr = .22213 hrs <br /> Total unit time, Tb = .27767 hrs <br /> Coascal Engineering Co. , Inc. <br /> Pond Pack Ver: 8-01-98 (61) Date: 05-07-2001 <br />