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Q10 - 2.2 cfs (From peak discharge calculations) <br />n = 0.03 (Manning coefficient for riprap) <br />sideslope = 1.5:1 (horizontal to vertical) <br />slope(s) = 0.02 ft/ft <br />Q10 = 1.49 AR2/3 S1/2 <br />n <br />Hydraulic Data: <br />Q = 2.27 cfs <br />D = 0.70 ft <br />A = 0.74 ft2 <br />R = 0.29 ft <br />s = 0.02 ft/ft <br />n = 0.03 <br />V = 3.07 fps <br />e) Munger Canyon Sedimentation Reservoir Collector Ditch <br />Design Summary <br />The design of the collector ditch is for the inlet to the sedi- <br />mentation reservoir where a collected peak discharge of 2.2 cfs <br />from a 10 yr. - 24 hr. storm is anticipated. The office and <br />working area shall collect and convey the surface runoff through <br />ditches alongside the safety berm as indicated in the drawing below. <br />SURFACE RUNOFF SAFETY BERM <br />FROM OFFICE & <br />WORKING AREA <br />IL_~JI OUTSCOPE OF <br />1.5 I.5 IL2 EMBANKMENT <br />COLLECTOR DITCH <br />(DEPTH= Iff.) <br />NOTE <br />SEE MUNOER CANYON MINE SITE PROFILES SHEET <br />cno inennnu nr ocow <br />