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S2PM02 <br />Project Name: Seneca II <br />Projecl Number: BB2-1000 <br />Prepared By; JPB <br />Dale Prepared: OS Nov 1997 <br />File: J:\982\DS\S2SUMM.XLS <br />Channel Design Flow, O Slape Bottom W/dth (BW) Slde Slopes Depth of Flow (D) Velocity Freeboard Total Depth Rlprap D50 <br />(cis) (°~) (it) (H: t V) (ft) (ips) (it) (it) (Inl <br />(1) (2) and (3) (4J (5) <br />S2 PM-2 <br />4.4-17.3 <br />0.8 1.29 0.3 1.1 NA <br />i Notes: <br />N 1) Channel designed for existing worst case, vegetated, V-shaped conditions. <br />~ 2) Channel was designed to safely convey runoff resulting from the 10 year, 24 hour storm event. <br />~ 3) Design flow rounded to nearest whole cfs from SEDCAD hydrologic analysis. <br />4} Depth of flour based on minimum grade. <br />5) Velocity based on maximum grade. <br />z <br />m <br />r <br />VI <br />d <br />O <br />VI <br />O <br />m <br />• Pag~ <br />