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<br />.' <br /> <br />./ <br /> <br />T =D+0.6T <br />p 2 c <br /> <br />T = 2.67 T <br />b P <br />484 AQ <br />T <br />P <br /> <br />~= <br /> <br />Given <br /> <br />For D = 0.25 hr. <br /> <br /> <br />For D = O. 50 hr. <br /> <br />(9) <br /> <br />Compute T . Tb' and q for 1. 00 inch <br />p p <br />0.25 hour t~angular hydrograph, using <br />watershed T . <br />c <br /> <br />T = O. 61 hrs <br />c <br /> <br />A = 5.01 sq. miles <br /> <br />Q = 1. 00 inch <br /> <br />T = 0.25 + 0.6(0.61) = 0.49hr <br />P 2 <br /> <br />Tb = 2.67 (0.49) = 1.31 hr. <br /> <br />~ = 484 (5.01) (1. 00) = 4949 sec. -ft. <br />0.49 <br /> <br />T = 0.50 -I- 0.6 (0.61) = 0.62 hr. <br />p -"2 <br /> <br />Tb = 2.67 (0.62) = 1.64 hr. <br /> <br />q = 484 (5.01) (1. 00) = 3911 sec. -ft. <br />p <br />0.62 <br /> <br />- 11 - <br />