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10/6/98 3:17:58 pm Dean Hougr & Associates page 3 <br />CITY OF EVERETT TfiMP �TORAGE YARDS <br />FDS DEVELOPMENT/10815 EVERGREFN WAY <br />APPENDIX B: DITCH CONVEYANCE ANALYSIS <br />� � � � � � � � � _ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � .� � � � � � .� � _ � 3 � � � � � � � � � � � _ _ � � � � � � <br />REACH SUNIMARY <br />Aydraulic Gradeline for Reach HGI,1 <br /><-FROM-> <--TO--> <FLOW> floss Bnt BGI, BntLoss BxtLoss OutLet Inlet AppBead BndEead JunHead Headiitr -cb/mh- <br />-•--•--- -•------ cfs •loss- -Blev-- --losa- --loss- •-Blev- --Slev- --losa- --loss- --loss• --Blev- --Rim-- <br />-----------------------------------------------=-=-=-==-===--===-====-=---------------------- <br />--------------------- <br />Ditch dl Start B1: 540,12 <br />dl: Upstream W.S, 540.56 ft (Gravity) Gravity flor at upend, �(108,65 ft) Trans dist: ft <br />Network Reach N1 <br />RBACH <-AR$A> <-DIA> I,BNGTH SLOPB c n > DSGH Q� PIPB Ndepth �Depth Vact Vfull C Area <br />ID (Ac) (ft) (ft) ft/ft --•--- (cfs) ----•- (ft) ------ (fps) (fps) <br />------=---===-----=---==---===-====--=--=--======-=--=--=---==--=-=======---===--===--=--==-=-=== <br />dl 1.90 108.65 0.0040 0.0250 0.99 DitCh 0.37 Ditch 1.47 <br />DITCH REACH ID No. dl <br />Ditch Length: 108.65 ft Ditch Width: <br />Side Slopel : 2.00 Ditch Slope: <br />Side Slope2 : 2.00 Contrib Bas: <br />Mannings n :0.0250 Dn Invert . <br />Dn W.S. S1ev:540.1190 Num Steps . <br />1.00 ft <br />0.0040 ft/ft <br />539.75 ft <br />10 <br />Trib Area: 1.90 Ac. Design Flow : 0.94 cfs <br />Depth . 0.37 ft Vel . 1.47 fps <br />Upstream W.S. Flev: 540.56 ft. <br />