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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />-. <br /> <br />SECTION <br />NUMBER <br /> <br />1160 <br />1150 <br />1142 <br />1130 <br />1120 <br /> <br />2188 <br />2186 <br />2184 <br />2180 <br />2170 <br />2160 <br />2150 <br />2140 <br />2130 <br /> <br />8550 <br />8540 <br />8530 <br />8520 <br />8512 <br />8510 <br />8500 <br />8220 <br />8210 <br />8205 <br /> <br />CONs,-,\_r'..a <br />(,,[j''''(1[101I <br /> <br />LOCATION <br />I <br />STATION DESCRIPTION <br /> <br />40+10 <br />38+85 <br />38+50 <br />34+50 <br />32+05 <br /> <br />378+60 <br />373+45 <br />370+85 <br />367+40 <br />366+ 70 <br />362+30 <br />358+30 <br />355+40 <br />352+90 <br />351+50 <br /> <br />473+80 <br />468+70 <br />464+40 <br />461+20 <br />457+70 <br />457+ 30 <br />455+60 <br />454+50 <br />450+10 <br />448+65 <br /> <br />MAIN CHANNEL - CONT'O <br /> <br />Cnty, Fai rgrounds Entrance Brdg. <br /> <br />S. Platte Riv, 10-Yr. W.S. Elev <br />TRIBUTARY V <br /> <br />Eastlake Dam #3 <br /> <br />Confluence With Brantner Gulch <br /> <br />TRIBUTARY III <br /> <br />Stock Pond Dam <br /> <br />Confluence With Tributary 111-0 <br />Stock Pond Dam <br /> <br />100 YEAR <br />DISCHARGE <br />(CFSl <br /> <br />THALWEG2 <br />ELEVATION <br /> <br />6800 <br />6800 <br />6800 <br />6800 <br />6800 <br /> <br />5008.2 <br />5009,0 <br />5007.2 <br />5006.3 <br />5004.8 <br /> <br />7 <br />35 <br />35 <br />64 <br />93 <br />121 <br />150 <br />1600 <br />1600 <br /> <br />5219.8 <br />5215.7 <br />5212.1 <br />5207.9 <br />5205.5 <br />5201.5 <br />5197.3 <br />5193.5 <br />5190.0 <br /> <br />400 <br />400 <br />400 <br />400 <br />400 <br />400 <br />400 <br />400 <br />700 <br />1300 <br /> <br />5208,2 <br />5195.6 <br />5188.1 <br />5187.0 <br />5187.4 <br />5175.9 <br />5172.2 <br />5169.0 <br />5165,0 <br />5166.0 <br /> <br />(7) Combined floodplain of Brantner Gulch, Tributary VI and Tributary VII. <br />(8) Includes floodplain of Brantner Gulch. <br /> <br />~ <br /> <br />SELLARDS & GRIGG. INC. <br /> <br />TABULAR <br /> <br />,14!o W 14TH AVI"VI . CQTTO"wOQO 'lAlA I <br />I....KI....OOO. COl.DIII"'DO '01" 2JIU1' <br /> <br />FLOOD PLAIN DATA: <br />100 YEAR <br /> <br />WATER <br />SURFACE <br />ELEVATION <br /> <br />5015.7 <br />5015.3 <br />5014.8 <br />5009.1 <br />5008.7 <br /> <br />5220.0 <br />5215.9 <br />5212,3 <br />5208.1 <br />5205.7 <br />5201.7 <br />5197.6 <br />5195.6 <br />5191.!l <br /> <br />5210.4 <br />5197.7 <br />5190.0 <br />5189.2 <br />5188.1 <br />5177 .9 <br />5174.0 <br />5170.8 <br />5158.0 <br />5167.1 <br /> <br />TOP <br />WIDTH (FT.) <br /> <br />MEAN <br />VELOCITY <br />(FT./SEC.l <br /> <br />52007 <br />52007 <br />54007 <br /> <br />54007 <br />54007 <br /> <br />6.9 <br />5.4 <br />3.5 <br />4.2 <br />3.0 <br /> <br />70 <br />570 <br />655 <br />455 <br />290 <br />a65 <br />6008 <br />4328 <br />2708 <br /> <br />0.6 <br />1.5 <br />1.4 <br />1.9 <br />0.4 <br />2.3 <br />2.5 <br />4.4 <br />5.0 <br /> <br />62 <br />53 <br />52 <br />128 <br />330 <br />260 <br />94 <br />60 <br />240 <br />231 <br /> <br />7,0 <br />5.4 <br />6.4 <br />1.5 <br />3.5 <br />4.6 <br />6.1 <br />5.6 <br />1.1 <br />5,7 <br /> <br />TABLE 3 <br />FLOOD PLAIN AND FLOODWAY DATA <br />BRANTNER GULCH <br /> <br />WATER <br />SUR FACE <br />ELEVATION <br /> <br />5016.5 <br />5015.3 <br />5015,0 <br />5009.4 <br />5009.2 <br /> <br />5220.0 <br />5216,3 <br />5212.3 <br />5208.3 <br />5206.0 <br />5202.0 <br />5198.0 <br />5195.5 <br />5192.0 <br /> <br />5210.9 <br />5198.2 <br />5190.2 <br />5189.5 <br />5188.1 <br />5177 .9 <br />5174.5 <br />5170.8 <br />5168.1 <br />5167.1 <br /> <br />FLOODWAY DATA: 100- YEAR <br />.3 4 <br />TOP DISTANCE DISTANCE <br />WIDTH (FT.) LEFT (FT.) RIGHT (FT.) <br /> <br />720 <br />850 <br />1035 <br />740 <br />750 <br /> <br />35 <br />70 <br />75 <br />70 <br />115 <br />90 <br />90 <br />230 <br />200 <br /> <br />60 <br />60 <br />55 <br />90 <br />210 <br />150 <br />45 <br />55 <br />190 <br />200 <br /> <br />375 <br />/l50 <br />600 <br />125 <br />35 <br /> <br />345 <br />400 <br />435 <br />615 <br />715 <br /> <br />FLOOD HAZARD AREA DELINEATION <br />URBAN DRAINAGE AND FLOOD CONTROL DISTRICT <br />CITY OF THORNTON <br />ADAMS COUNTY <br /> <br />20 <br />40 <br />30 <br />40 <br />55 <br />50 <br />45 <br />175 <br />75 <br /> <br />15 <br />30 <br />45 <br />30 <br />60 <br />40 <br />45 <br />55 <br />125 <br /> <br />25 <br />40 <br />30 <br />35 <br />85 <br />110 <br />30 <br />30 <br />115 <br />130 <br /> <br />35 <br />20 <br />25 <br />55 <br />125 <br />40 <br />15 <br />25 <br />75 <br />70 <br /> <br />34 <br /> <br />MEAN <br />VELOCITY <br />(FT./SEC.) <br /> <br />5.4 <br />6.9 <br />5.3 <br />4.3 <br />2,9 <br /> <br />0.9 <br />1.9 <br />2.5 <br />3.1 <br />1.7 <br />3.5 <br />3.1 <br />5.9 <br />6.1 <br /> <br />8.0 <br />5.5 <br />7.9 <br />1.8 <br />3.5 <br />4.9 <br />6.1 <br />6.9 <br />1.2 <br />6.0 <br />