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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 />FLOOD PLAIN DATA: <br />100 YEAR <br />TOP <br />WIDTH (FT.) <br /> <br />40 <br />MEAN <br />VELOCITY <br />(FT./SEC,) <br /> <br />LOCATION <br />I <br />STATION DESCRIPTION <br /> <br />FLOODWAY DATA: 100- YEAR <br /> <br />TOP DISTANCE3 DISTANCE4 <br />WIDTH (FT.) LEFT (FT.) RIGHT (FT.) <br /> <br />THALWEG2 <br />ELEVATION <br /> <br />MEAN <br />~ELOCITY <br />FT./SEC,l <br /> <br />100 YEAR <br />DISCHARGE <br />(CFSl <br /> <br />WATER <br />SURFACE <br />ELEVATION <br /> <br />WATER <br />SURFACE <br />ELEVATION <br /> <br />SECTION <br />NUMBER <br /> <br />REG. PARK-S. TRIB, VI-CONT'D <br /> <br />20 <br />35 <br />20 <br />70 <br />55 <br />50 <br />55 <br />15 <br /> <br />20 <br />30 <br />105 <br />230 <br />115 <br />90 <br />20 <br />70 <br /> <br />7.0 <br />6.2 <br />2.8 <br />1.0 <br />0.8 <br />4.9 <br />6.8 <br />6.5 <br /> <br />40 <br />65 <br />125 <br />300 <br />170 <br />140 <br />75 <br />85 <br />N/ A 14 <br />N/A14 <br />N/A14 <br />N/A14 <br />N/A14 <br />N/A14 <br />N/A14 <br />N/A14 <br />N/A14 <br />N/A14 <br />N/A14 <br />N/A14 <br />N/A14 <br />N/A14 <br />N/A14 <br /> <br />5071. 6 <br />5064.5 <br />5059,4 <br />5059.4 <br />5059.3 <br />5058.9 <br />5049.0 <br />5043.2 <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br /> <br />5.4 <br />5.5 <br />2.8 <br />0.9 <br />0.8 <br />4.1 <br />5,5 <br />5.6 <br />3.8 <br />5.4 <br />0.6 <br />3.6 <br />7,8 <br />0.1 <br />0.0 <br />0.1 <br />1.2 <br />0.1 <br />0.1 <br />0.2 <br />0.4 <br />0.7 <br />0.4 <br /> <br />70 <br />120 <br />270 <br />895 <br />205 <br />200 <br />130 <br />130 <br />205 <br />350013 <br />140013 <br />139013 <br />105013 <br />80013 <br />500013 <br />500013 <br />500013 <br />500013 <br />500013 <br />500013 <br />5000 13 <br />500013 <br />500013 <br /> <br />5071.5 <br />5064.5 <br />5059.0 <br />5059.0 <br />5059.0 <br />5058.6 <br />5048.7 <br />5043.1 <br />5037.5 <br />5030,3 <br />5024.1 <br />5020.2 <br />5017.8 <br />5e17.0 <br />5017.0 <br />5017 . 0 <br />5010.1 <br />5009.012 <br />5006.812 <br />5005.012 <br />5003.41< <br />5001.5 <br />5001 .4 <br /> <br />5069.5 <br />5063,0 <br />5057.5 <br />5053.6 <br />5052.0 <br />5050.4 <br />5046.7 <br />5041. 7 <br />5035,7 <br />5029.0 <br />5023.1 <br />5014,5 <br />5013.8 <br />5013.8 <br />5013.8 <br />5013.8 <br />5009,0 <br />5001. 4 <br />5001.1 <br />5001.2 <br />5000.0 <br />5098.6 <br />5098.0 <br /> <br />440 <br />440 <br />440 <br />670 <br />670 <br />670 <br />670 <br />670 <br />670 <br />670 <br />690 <br />690 <br />690 <br />690 <br />690 <br />690 <br />690 <br />690 <br />690 <br />690 <br />690 <br />690 <br />690 <br /> <br />1248+90 <br />1244+ 70 <br />1242+30 <br />1240+ 10 <br />1239+00 <br />1237+90 <br />1235+40 <br />1231+70 <br />1227+70 <br />1222+40 <br />1218+50 <br />1215+50 <br />1212+50 <br />1208+65 <br />1205+00 <br />1202+30 <br />1199+50 <br />1194+60 <br />1191+90 <br />1188+65 <br />1185+70 <br />1181+60 <br />1176+50 <br /> <br />9500 <br />9490 <br />9480 <br />9470 <br />9450 <br />9440 <br />9430 <br />9425 <br />9410 <br />9400 <br />9390 <br />9380 <br />9370 <br />9360 <br />9350 <br />9340 <br />9315 <br />9310 <br />9300 <br />9290 <br />9280 <br />9270 <br />9260 <br /> <br />Yosemite Street <br /> <br />Riverda1e Road <br /> <br />S. Platte Riv. 10-Yr, WS E1ev. <br /> <br />REGIONAL PARK - NORTH <br />TRIBUTARY VII <br /> <br />15 <br />15 <br />30 <br />40 <br /> <br />7.3 <br />7,7 <br />7,2 <br />7.0 <br /> <br />25 <br />20 <br />15 <br />25 <br /> <br />40 <br />35 <br />45 <br />65 <br /> <br />5098.1 <br />5088.6 <br />5083.1 <br />5080.4 <br /> <br />6.5 <br />7.1 <br />6.5 <br />6.2 <br /> <br />60 <br />60 <br />85 <br />60 <br /> <br />5098.0 <br />5088.4 <br />5083.0 <br />5080.4 <br /> <br />5096.0 <br />5085.9 <br />5081,0 <br />5078.1 <br /> <br />480 <br />480 <br />480 <br />480 <br /> <br />1129+80 <br />1125+50 <br />1122+60 <br />1121+20 <br /> <br />9790 <br />9780 <br />9770 <br />9760 <br /> <br />12. Floodplain of RPT VI and RPT VII combined. <br />100 year Water Surface for RPT VI exclusively: <br />Section 9310 WS E1ev. = 5004.4 Section 9290 WS E1ev. = 5003.4 <br />Section 9300 WS E1ev. = 5004.2 Section 9280 WS E1ev. = 5001.7 <br /> <br />13. Approximate too width o~ the combined floodplain <br />of Tributary VI, Tributary VII, Brantner Gulch, <br />and the South Platte River. <br />14, No floodway is defined because Master Plan calls <br />for reroutinQ of tributary. <br /> <br />TABLE 3 <br />TABULAR FLOOD PLAIN AND FLOODWAY DATA <br />BRANTNER GULCH <br /> <br />FLOOD HAZARD AREA DELINEATION <br />URBAN DRAINAGE AND FLOOD CONTROL DISTRICT <br />CITY OF THORNTON <br />ADAMS COUNTY <br /> <br />~ <br /> <br />SELLARDS & GRIGG. INC. <br /> <br />CONSULT'NG <br />[..al... [[1115 <br /> <br />11.!> W 14TIi "'Vf"lUE . COTTONWOOD 'LIIlZ,", t <br />L"'KEwOOD. COlORA,OO ,02U 23864" <br />