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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 />SECT \0 N <br />NUMBER <br /> <br />2340 <br />2330 <br />2320 <br />2310 <br />2300 <br />2290 <br />2280 <br />2270 <br />2225 <br />2215 <br />2205 <br />2195 <br />2185 <br />2175 <br />2165 <br />2164 <br />2163 <br />2162 <br />2161 <br />2160 <br />2150 <br />2140 <br />2130 <br />2120 <br />211 0 <br />2100 <br />2090 <br />2080 <br />2070 <br /> <br />100 YEAR <br />DISCHARGE <br />(CFS) <br /> <br />2 <br />THALWEG <br />ELEVATION <br /> <br />FLOOD PLAIN DATA: <br />100 -YEAR <br />TOP <br />WIDTH (FT.) <br /> <br />MEAN <br />VELOCITY <br />(FT.lSEC,) <br /> <br />LOCATION <br />I <br />STATION DESCRIPTION <br /> <br />317+65 <br />316+65 <br />316+15 <br />312+25 <br />309+30 <br />305+20 <br />301 +50 <br />297+85 <br />296+65 <br />295+40 <br />292+90 <br />290+35 <br />287+90 <br />285+40 <br />284+45 <br />281+70 <br />277+65 <br />274+50 <br />271+05 <br />265+90 <br />263+05 <br />260+45 <br />258+00 <br />255+85 <br />254+35 <br />253+40 <br />250+50 <br />248+10 <br />245+00 <br /> <br />WATER <br />SURFACE <br />ELEVATION <br /> <br />BRANTNER GULCH - MAIN CHANNEL <br />R.R. Bridge <br /> <br />1850 <br />1850 <br />1850 <br />1850 <br />1850 <br />1850 <br />1850 <br /> <br />5258.8 <br />5258.7 <br />5259.9 <br />5255.3 <br />5252.9 <br />5251.4 <br />5250.8 <br /> <br />5268.1 <br />5265.6 <br />5261.7 <br />5258,8 <br />5258.7 <br />5258.7 <br />5258.7 <br /> <br />East1ake Reservoir No, 2 Dam <br /> <br />Steele Street <br /> <br />9 <br />38 <br />66 <br />95 <br />120 <br />150 <br />180 <br />308 <br />308 <br />458 <br />608 <br />1300 <br />1300 <br />1600 <br />1600 <br />1600 <br />2500 <br />2500 <br />2500 <br />2500 <br />2500 <br /> <br />5248.4 <br />5246.4 <br />5242.8 <br />5238.8 <br />5233.6 <br />5229.7 <br />5228.8 <br />5224.2 <br />5223.6 <br />5219.5 <br />5211. 9 <br />5202.5 <br />5198.3 <br />5195.4 <br />5191. 8 <br />5191.1 <br />5190.4 <br />5186.9 <br />5181.7 <br />5179.3 <br />5175.6 <br /> <br />5248.0 <br />5245.7 <br />5241. 6 <br />5237,3 <br />5232.2 <br />5229.0 <br />5228.1 <br />5222.7 <br />5222.7 <br />5218.6 <br />5210.5 <br />5202.3 <br />5197.5 <br />5193.7 <br />5191. 0 <br />5187.4 <br />5184.9 <br />5183.6 <br />5178.4 <br />5174.5 <br />5170.9 <br /> <br />Confluence With Tributary V <br /> <br />Colorado Boulevard <br /> <br />(1) Stationing in hundreds of feet above the mouth or confluence. <br />(2) Elevations are at mean sea level. <br />(3) Looking downstream, distance left from referencE, baseline measured along cross-section <br />line. <br /> <br />1200 <br />65 <br />625 <br />735 <br />900 <br />1060 <br />1130 <br /> <br />19 <br />25 <br />22 <br />30 <br />20 <br />440 <br />500 <br />495 <br />315 <br />185 <br />380 <br />7305.2 <br />6005.2 <br />4325.2 <br />2705.2 <br />2655.2 <br />435 <br />205 <br />147 <br />127 <br />100 <br /> <br />0.3 <br />11.1 <br />0.9 <br />0.5 <br />0.5 <br />0.5 <br />0.5 <br /> <br />1.4 <br />3.5 <br />3.9 <br />5.0 <br />4.7 <br />1.1 <br />3.3 <br />0.8 <br />2,0 <br />3.5 <br />3.8 <br />3.7 <br />4.2 <br />4.3 <br />5.6 <br />3.2 <br />5.7 <br />6.5 <br />7.5 <br />6.4 <br />8.1 <br /> <br />WATER <br />SURFACE <br />ELEVATION <br /> <br />FLOODWAY DATA: 100- YEAR <br />3 4 <br />TOP DISTANCE DISTANCE <br />WIDTH (FT.) LEFT (FT.) RIGHT (FT.) <br /> <br />30 <br /> <br />MEAN <br />VELOCITY <br />(FT./SEC,) <br /> <br />, <br /> <br />3.1 <br />2.0 <br />4.7 <br />5.3 <br />6.4 <br />2.3 <br />3.6 <br />1.1 <br />2.5 <br />5.2 <br />5.0 <br />5.1 <br />5.4 <br />5.9 <br />6.1 <br />5.6 <br />5,5 <br />7.2 <br />8.2 <br />7.1 <br />9.5 <br /> <br />(4) Looking downstream, distance right from reference baseline measured along cross- <br />section line. <br />(5.1) F100dway is same as floodplain. <br />(5.2) Includes f100dfl1ain of Tributary V. <br /> <br />CO"'"U(,.'r,,",g <br />[NO'''' [[II. <br /> <br />~ ;.:;~.~~.~,~u,~ ~~~~~~ ~~,c;:; <br />1,...ll;eWQOO, COlOIl...OO IOln 2316"" <br /> <br />TABLE 3 <br />TABULAR FLOOD PLAIN AND FLOODWAY DATA <br />BRANTNER GULCH <br /> <br />MIA <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br /> <br />N/A 5,1 <br />N/A 5.1 <br />N/A 5.1 <br />N/A 5.1 <br />N/A 5.1 <br />N/A 5.1 <br />N/A 5.1 <br /> <br />] <br /> <br />5248.4 <br />5246.9 <br />5244.7 <br />5238.9 <br />5233.8 <br />5230.1 <br />5228.8 <br />5224.5 <br />5223.8 <br />5219.7 <br />5212.1 <br />5202.7 <br />5198.5 <br />5195.5 <br />5192.0 <br />5191.1 <br />5190.9 <br />5187.1 <br />5182.0 <br />5179.6 <br />5175.6 <br /> <br />7 <br />10 <br />10 <br />13 <br />7 <br />183 <br />240 <br />195 <br />65 <br />43 <br />260 <br />40 <br />40 <br />50 <br />125 <br />105 <br />80 <br />85 <br />60 <br />50 <br />45 <br /> <br />12 <br />20 <br />20 <br />25 <br />12 <br />190 <br />253 <br />245 <br />175 <br />105 <br />530 <br />305 <br />250 <br />230 <br />200 <br />180 <br />250 <br />120 <br />100 <br />80 <br />70 <br /> <br />5 <br />10 <br />10 <br />12 <br />5 <br />7 <br />13 <br />50 <br />110 <br />62 <br />270 <br />265 <br />210 <br />180 <br />75 <br />75 <br />170 <br />35 <br />40 <br />30 <br />25 <br /> <br />FLOOD HAZARD AREA DELINEATION <br />URBAN DRAINAGE AND FLOOD CONTROL DISTRICT <br />CITY OF THORNTON <br />ADAMS COUNTY <br />