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<br /> ISTARTI <br /> CALOlLATE 01 SCHARGE UNDER BRIOGE BY MAKE IN ITI AL ESTIMATE OF EIlERGY ELE- <br /> ORIFICE EQUATION VATION <br /> 61110 62110-6270 <br /> j I <br /> INITIALIZE WEIR FLOW TO ZERO I I S FLOW A C<lHBIUTION OF WEI R AND I---, <br /> 61120 I ~ ORI FI CE 0lil0 NOT WEI R AND LOW FLOW? <br /> j 6300 <br /> NO <br /> CALOlLATE HEAO, WEI R LEIlGlll FOR FI RST <br /> ROADWAY SEGMENT WHIOi IS BELOW lllE <br /> ASSUMED Ell ERGY ELEVATION <br /> 6~"-6~50 MAKE INITIAL ESTIMATE OF OISCHARGE <br /> I PASSING UNDER BRIDGE (CHANNEL QI <br /> 6310 <br /> CALOlLATE SUBMERGENCE WEI R COEFFI CI EIIT I <br /> FOR ROADWAY SEGMENT <br /> 61180 CALCULATE DOWNSTREAM VELOCITY HEAD <br /> I USI NG ASSUMEO CHANNEL Q ANa PRE- <br /> VIOUS AREA <br /> CALOlLATE 01 SCHARGE OVER WEI R SEGMENT <br /> 0lil0 ADO TO PREVIOUS WEIR DISCHARGES CALCULATE UPSTREAM WATER ELEVATION <br /> 65110 BASEO ON YARNELL'S ENERGY EQUATION <br /> I CALCULATE UPSTREAM VELOCITY HEAD <br /> PROCEED TO NEXT ROADWAY SEGMENT I FROM ASSUMED EN ERGY ANO CALCULATED <br /> 6580 WATER SURFACE <:LEVATION <br /> I I N CREASE EN ERGY EL EVA TI ON TO .1 FT <br /> ABOVE UPSTREAM WATER SURFACE IF <br /> IS ENO OF ROAOWAY SEGMENT ABOVE ASSUMED YES VELOCITY HEAD WAS NEGATIVE <br /> ENERGY ELEVATION? - ~ <br /> 6590 <br />I NO j CALCULATE UPSTREAM: <br /> VELOCITY FROol VELOCITY HEAD, <br /> CALClJLATE HEAD AIID WEIR LENGlI/ FOR SEG- AREA FROM DEPlll, <br /> MENT OF ROADWAY DISCHARGE FROol AREA ANO VELOCITY <br /> 6610 ~ <br /> ARE ANY OF REMAIN ING ROADWAY ELEVATIONS - ~ ARE ASSUMED ANO Cl>>1PUTED CIlANNEL Q <br /> BELOW ASSUMED EIIERGY ELEVATION? _YES WlllllN ONE PERCENT? <br /> 6630 NO NO 1 <br /> YES 1 <br /> CAlaJLATE NEW STARTING HEAD AND WEI R MAKE NEW ASSUMPTION OF CIlANNEL Q ~ <br /> LENGTH 6380 <br /> 6670 <br /> ADD DISCHARGES FOR WEIR ANa ORIFICE lOR ~ <br /> LOW FLOW) TO OBTAIN COMPUTED OISCIlARGE <br /> FOR ASSUMED ENERGY "LEVATION <br /> I <br /> YE.<: I S COMPUTED 01 SCIlARGE WI 111 IN ON E PERCENT I <br />! OF ACTUAL DISCHARGE? <br /> 6700 <br />1 NO I <br />I MAKE NEW ASSUMPTION OF ENERGY ELEVATION I <br /> 6720-6790 I <br /> <br />I <br />, <br />! : ACCEPT ENERGY ELEVATION, SO.VE FOR COR- <br />L--., RECT WATiCR SURFACE ELZVATION IN MAIN <br />I PROGRAH <br />I 6620 <br /> <br />END <br /> <br />Figure S. FloH Diagrarol FOl' Con,lJination Flo~1 <br /> <br />16 <br />