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<br />~.J~I!"""'I ~I~'~"'''''II ..II..... <br /> <br />I <br />I, <br /> <br />4236 <br /> <br />HEC-2 WEIR/SPLIT FLOW LINE, <br /> <br /> <br />HEC-2 CROSS SECTION <br />(TIED TO TEA STATIONING) <br /> <br />;: STATIONING . <br />ALON,G CENTERLINE, <br />OF CREEK <br />00 <br /> <br />r <br /> <br />100YR SPILL FLOODING <br />,FLOW NOT CONNECTED <br />TO MAIN CHANNEL <br />PROFILE <br /> <br />500 YEAR FLOOD <br />BOUNDARY LINE <br /> <br />BASE FLOOD <br />ELEVATION LINE <br /> <br /> <br />100 YEAR FLOOD <br />BOUNDARY LINES <br /> <br />,'/ <br /> <br />CREEK CENTERLINE <br /> <br />500 YEAR FLOOD <br />BOUNDARY LINE <br />(NOT PLOTIED FOR PRINCE TRIB.) <br /> <br />HORIZONTAL SURVEY <br />BENCHMARK <br /> <br />~'~ <br /> <br />- <br /> <br />N <br />- <br /> <br />"'tJE.s"t'f <br />V.\~CE. . <br />11' ' <br /> <br /> <br />LEGEND <br /> <br />t- <br />w <br />w <br />J: <br />CJ) <br />w <br />Z <br />...J <br />J: <br />U <br /> <br />~....~, <br /> <br />2 <br /> <br /> <br /> <br />LON <br /> <br />x86.5 <br /> <br />x 86.2 <br /> <br />+ <br /> <br />x 95.5 <br /> <br />x 94.4 <br /> <br />,APPROXIMATE DELINEATION. <br />BASED ON HEC-2 <br /> <br />TEA RAN 2 SPLIT FLOW MODELS TO 'ESTIMATE SPLIT TO THE LOW FLOW "EAST BRANCH" <br />CHANNEL: . <br />1. "PRBERM.DAT" ASSUMES THAT THE BERM ON THE WEST SIDE OF PRINCE STAYS' <br />IN PLACE, RESULTING IN 1440 CFS lOUT OF 2130 CFSI FLOWING DOWN THE LOW <br />FLOW "EAST BRANCH" CHANNEL. HOWEVER, THE BERM MIGHT BREACH. AND IT IS <br />UNCERTAIN WHETHER THAT MUCH FLOW CAN MAKE THE TURN BACK TO THE EAST. <br /> <br />1:',";' <br /> <br />2. "PRNOBERM.DAT" ASSUMES THAT THE BERM DOES NOT STAY IN PLACE. <br />RESULTING IN ONLY 590 CFS {OUT OF 2130 CFSI SPLITTING DOWN THE LOW FLOW <br />"EAST BRANCH" CHANNEL. HOWEVER. THIS UNDERESTIMATES FLOWS NORTH IN <br />"EAST BRANCH" IF THE BERM REMAINS. <br /> <br />~." <br />~~. . <br /> <br />BASED ON THE ABOVE TWO MODELS. TEA MODELED THE "EAST BRANCH" WITH 0= 1000 <br />CFS AND THE "WEST BRANCH" WITH 0= 1130 CFS (FOR 100.YEAR ONLY. PER CONTRACT!. <br /> <br />100 <br />I <br /> <br />50 <br /> <br />o <br /> <br />100 <br /> <br />200 <br /> <br />300 <br />I <br /> <br /> <br />SC'AlE I N FEET <br /> <br />- ,. <br />GROUND CONTROL SURVEY BY: LANDMARK MAPPING UPDATED FOR FEMA 8Y: DRAWN BY: TAB SHEET NO. <br />AERIAL PHOTOGRAPHY BY: ROCKY MOUNTAIN AERIAL SURVEYS '~~~~~NC' CHECKED 8Y: KJC , FLOOD INSURANCE STUDY WORK MAP <br />TOPOGRAPHIC MAPPING BY: LANDMARK MAPPING DATE: ,5/2nt9B PRINCE TRIBUTARY 11 <br />COUNTOUR INTERVAL: 2 FEET ." 2480W.2I5thAvt..SuittJ40B <br />Otnvtr.CoIorodo80211 TEA PROJ. NO. 40 <br /> (JOJ)4S5-J600FAX4~-9929 <br />DATE FLOWN. MAY 6. 1990 <br /> <br />..._....+. _ ....____...~_._._.._.._._.._..__..____.___._.. ..__._~.__..._..._..__"_ .. .._......_..__.._...._.__....__. .u.__..._.~... _.. ..__......_. _.u._.. ._____..._ ...._ <br />