onlinerouting07:   Clark unit hydrograph  Formulas Q = Ij * Ak             Convolution (See text example). O2 = C0I2 + C1I1 + C2O1        C0 = (Δt/K)/[2+(Δt/K)] C1 = C0        C2 = [2-(Δt/K)]/[2+(Δt/K)] Reference Ponce, V. M. 1989. Engineering Hydrology, Principles and Practices. Prentice Hall, pages 311-313. Return INPUT DATA: Unit hydrograph duration tr (hr):     2          Time interval Δt (hr):     1          Storage constant K (hr):     2 Number of increments of [watershed] drainage area:     4 Increments of [watershed] drainage area Ak (km2):     10,30,20,40 SAMPLE OUTPUT: Time interval"; Time (hr)"; Outflow (km2-cm/hr)"; Outflow (m3/s)"; 0 0 0 0 1 1 1 2.778 2 2 5.6 15.556 3 3 12.36 34.333 4 4 18.416 51.156 5 5 21.05 58.471 6 6 16.63 46.194 7 7 9.978 27.716 8 8 5.987 16.63 9 9 3.592 9.978 10 10 2.155 5.987 11 11 1.293 3.592 12 12 0.776 2.155 13 13 0.466 1.293 14 14 0.279 0.776 15 15 0.168 0.466 16 16 0.101 0.279 17 17 0.06 0.168 18 18 0.036 0.101 19 19 0.022 0.06 20 20 0 0 Thank you for running onlinerouting07.   Please call again.   [070425]