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• Use Figure E-1 - - Hydraulic length and drainage area <br />relationship <br />= 209a o.6 <br />For where = hydraulic length in feet <br />a = Drainage area in acres <br />AdI - For Ad = 6ac, = 800 FT. ) From topo - map <br />AdII Ad = 1L ac, = 1200 FT.j Appl~cat6onine <br />For 800 FT. = 2~9a o.6 a = 9.4 ao <br />For 1200 FT. = 2`J9a o.6 a = 18.4ac <br />pip Adjustment for [Vatershed shape factor <br />Ad I 410 - 4.89 CFS X 6 a = 3.12 CFS <br />• 9,4 <br />Ad II 410 = 8.71 CFS x~2 = 5,663 CFS <br /> 18.4 <br />Use 410 = 3.12 CFS Ad = Sac <br />410 - 5'68 CFS Ad = lac <br />ii) Hydraulic Data <br />Assumptions 1) = 0,!13 <br />2)ss 1.5:1 <br />3)1/ - Shape Channel <br />Diversion channel (,Gd = 6ac) <br />410 = 3,13 cFs <br />d = 0,90 FT <br />A = 1.21 Frz <br />R = 0,37 FT <br />s = 0.01 FT~FT <br />\~ = 2.59 FPS. <br /> <br />