FLOOD08613

• County: Adams
• Community: Thornton
• Stream Name: Brantner Gulch
• Basin: South Platte
• Title: Flood Hazard Area Delineation
• Date: 1/1/1983
• Prepared For: Adams County
• Prepared By: UDFCD
• Contract/PO #: &&
• Floodplain - Doc Type: Floodplain Report/Masterplan

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LOCATION FLOO~nPLA1N DATA: FLOODWAY DATA: 100- YEAR 38
10 YEAR
SECTION I 100 YEAR THALWEG2 WATER MEAN WATER DISTANCE3 4
STATION DESCRIPTION DISCHARGE SURFACE TOP ~ELOCITY SURFACE TOP DISTANCE MEAN
NUMBER ELEVATION WIDTH (FT. 1 VELOCITY
(CFSl ELEVATION FT./SEC.l ELEVATION WIDTH (FT.) LEFT (FT.) RIGHT (Ft) (FT./SEC.)
SUB-TRIBUTARY II-A - CONTIO
5125 898+30 400 5179.7 5180.6 85 10.0 N/A N/A"
5120 895+70 400 5167,0 5169,2 30 11.3 N/A N/ A"
5115 892+70 400 5149.7 5151.6 25 10.1 N/A N/ A 11
5110 888+70 400 5139.3 5142.9 52 5.1 N/A N/ A 11
5090 883+45 400 5130.4 5132.1 53 6.5 N/A N/A 11
5080 880+35 400 5127,1 5131.1 90 2.1 N/A N/A 11
5070 878+40 Quebec Street 400 5124.0 5130.3 138 5.4 N/A N/A 11
5060 877+ 15 600 5121.4 5124.3 59 7.4 N/A N/ A"
5050 871+20 600 5110.6 5113.4 60 5.5 N/A N/ A 11
5040 865+90 600 5101. 5 5105.3 45 7.4 N/A N/ A 11
5030 861+10 600 5095.0 5099.9 36 5.3 N/A N/ A 11
5020 857+05 600 5090.7 5094,4 58 7.3 N/A N/A 11
5010 853+90 600 5087.6 5091.7 78 3,0 N/A N/ A 11
850+00 Confluence With Tributary II
Tributary II - CONT'D
4160 645+40 Confluence With Sub-Trib. II-A 1800 5083 . 0 5091.7 415 1.1 5091.7 155 95 60 1.7
4150 642+20 1800 5083.0 5091. 7 367 0,7 5091.7 310 205 105 0,7
4146 641+30 Stock Pond Dam 1800 5086.0 5090.8 335 5.6 5090.8 305 190 115 5.6
4140 638+60 1800 5077.2 5080.9 132 4.7 5081. 2 130 90 40 5.8
4130 635+60 1800 5074.3 5077 . 3 102 7.9 5077 . 9 80 20 60 7.2
4120 631+30 1800 5069.7 5075.5 166 3.5 5075.5 75 40 35 5.1
4110 626+50 1800 5066.7 5075.5 303 1.1 5075.5 180 90 90 1.2
4105 624+ 70 Stock Pond Dam 1800 5073.9 5074.9 399 5.3 5074.9 360 260 100 5.5
4100 623+60 1800 5061 ,6 5064.0 268 6.9 5064.1 270 220 50 6.5
4090 621+20 1800 5057.0 5060.8 118 6.2 5061.1 80 45 35 7.1
4080 618+85 1800 5054.3 5059.3 108 5.9 5059.6 70 40 30 6.7
4070 617+40 1800 5054.4 5058.3 130 5.6 5058.8 80 50 30 5.8
4060 614+60 1800 5050.7 5054.9 86 8.4 5055.0 65 45 20 9.9
4050 611+40 1800 5045.4 5051.1 80 7.3 5051. 6 60 35 25 7.5
~ TABLE 3 FLOOD HAZARD AREA DELINEATION
CO,,",SUL-TINC SELLARDS & GRIGG, INC. TABULAR FLOOD PLAIN AND FLOODWAY DATA
(NQI",I[[". URBAN DRAINAGE AND FLOOD CONTROL DISTRICT
'14!o w. ,.nl "VEfliU( . COTTONWOOD PI-AlA, I
l"lI(l:wOOO. COlOl'lAOO 10211 231.6.11 BRANTNER GULCH CITY OF THORNTON
ADAMS COUNTY