FLOOD00734

• Designation Number: 213
• County: Adams
• Community: Thornton
• Stream Name: Brantner Gulch and Tributaries
• Title: Flood Hazard Area Delineation - Brantner Gulch and Tributaries
• Date: 1/1/1983
• Designation Date: 5/1/1983
• Floodplain - Doc Type: Floodplain Report/Masterplan

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LOCATION FLOOD PLAIN DATA: FLOODWAY DATA: 100- YEAR 33
100 YEAR
SECTION I 100 YEAR THALWEG2 WATER MEAN WATER DISTANCE3 4 MEAN
NUMBER STATION DESCRIPTION DISCHARGE SURFACE TOP VELOCITY SURFACE TOP DISTANCE VELOCITY
(CFSl ELEVATION ELEVATION WIDTH (FT.) (FT./SEC,l ELEVA nON WIDTH (FT.) LEFT (FT,) RIGHT (FT.) (FT,/SEC.)
MAIN CHANNEL - CONT'D
1490 97+10 5600 5046.1 5055.1 300 5.1 5056.5 280 135 145 3.8
1480 94+40 5600 5043.6 5055.1 362 3.3 5056.5 270 150 120 2.~
1470 92+60 5600 5043.2 5055.1 1200 1.5 5056.5 470 135 335 1.7
1460 92+25 E. 128th Avenue 5600 5042.3 5053.9 1015 7.8 5055.3 345 5 340 7.4
1450 91+90 5600 5041.9 5050.9 1070 3.2 5051.1 330 15 315 4.1
1440 88+10 5600 5033.8 5048.8 890 8.4 5048.7 205 65 140 9.4
1430 85+90 5600 5038.1 5048.3 620 3.0 5048.5 335 65 270 3.6
1420 84+80 5600 5037.8 5047.8 700 5.0 5048.0 265 25 240 5.0
1400 81+10 5600 5036.4 5046.9 850 5.3 5047.3 235 150 85 4.8
1390 78+70 5600 5035.2 5045.8 380 7.2 5046.0 125 15 110 8.3
1380 75+50 5600 5033.0 5045.0 280 5.7 5045.3 190 95 95 5.8
1370 73+85 Confluence With Tributary II 5600 5032.3 5045.0 510 2.6 5045.3 282 117 165 3.3
1360 71+50 Confluence With Tributary I 5600 5032.9 5044.9 632 2.2 5045.1 275 150 125 3.5
1350 68+30 5600 5031.0 5044.8 620 1.7 5045.0 300 268 32 2.3
1340 67+60 Riverdale Road 6800 5030.8 5043.3 445 8.6 5043.8 280 260 20 0.8
1330 67+20 6800 5030.2 5038.9 605 8.5 5038.9 270 240 30 8.8
1320 64+65 6800 5029.5 5037.1 310 8.8 5037.4 210 160 50 9.4
1310 61+25 6800 5025.9 5035.4 460 1.8 5035.4 240 140 100 9.3
1290 58+60 6800 5023.3 5033.8 15006 7.9 5033.9 460 180 280 7.4
1280 56+60 6800 5021.5 5029.4 22006 7.7 5029.6 480 250 230 7.0
1270 55+60 6800 5020.4 5028.2 2800 6 7.4 5028.2 505 290 215 7.8
1260 54+50 6800 5019.1 5026.6 3400 6 4.8 5026.9 590 340 250 6.1
1250 52+70 6800 5017.6 5025.8 36006 5.7 5026.0 480 225 255 5.7
1240 50+70 6800 5015.3 5024.2 5500 6 6.1 5024.2 420 90 330 6.3
1225 49+10 6800 5012.1 5022.2 58006 10.0 5022.3 445 50 395 10.7
1200 47+65 6800 5011 .6 5020.8 59006 5.2 5021.2 565 55 510 5.9
1190 45+15 6800 5011 .3 5019.4 62006 5.5 5019.5 600 155 445 6.1
1180 43+50 6800 501 0.6 5017 . 5 62006 3,5 5017.6 660 300 360 7.1
1170 41+70 6800 5009.5 5016.6 62006 6.0 5016.8 690 345 345 6.6
(6) Combined floodplain of 8rantner Gulch. Tributary VI and Tributary VII.
~ TABLE 3 FLOOD HAZARD AREA DELINEATION
c:C....!lU..Tl..a SELLARDS & GRIGG. INC. TABULAR FLOOD PLAIN AND FLOODWAY DATA URBAN DRAINAGE AND FLOOD CONTROL DISTRICT
t..al'" II: 1[1""
".s W, '.114 AV(/<oIuf: . COT10..."",000 'LAZA I
.....I(I!WOOO. COLOIU,OO IOll1 n'."'1 BRANTNER GULCH CITY OF THORNTON
ADAMS COUNTY