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 FLOOD PLAIN DATA: FLOODWAY DATA: 100 36
100 YEAR YEAR
SECTION I 100 YEAR THALWEG2 WATER MEAN WATER DISTANCE3 DISTANCE 4
STA TION DESCRIPTION DISCHARGE SURFACE TOP VELOCITY SURFACE TOP MEAN
NUMBER ICFS) ELEVATION WIDTH (FT.) WIDTH (FT.) LEFT (FT.) RIGHT (FT.) VELOCITY
ELEVATION I FT./SEC.l ELEVATION (FT./SEC.)
SUB-TRIBUTARY III-D - CONT'D
8220 504+20 200 5168.5 5169.9 55 5.4 5169.9 42 18 34 5.4
8210 500+00 Confluence With Tributary III 200 5165.0 5168.0 250 0.3 5168.5 190 125 65 0.3
TRIBUTARY IV
9120 589+75 255 5135.3 5136.4 92 3,5 5136.5 50 20 30 5.0
9110 587+15 265 5131.8 5133,3 94 5.0 5133.5 55 25 30 5.3
9100 585+45 285 5128.9 5132.9 130 1.2 5133.4 90 50 40 1.1
9090 582+ 40 295 5125.4 5132.9 380 0.2 5133.4 130 80 50 0.3
9080 580+30 E. 128th Avenue 315 5124.4 5132.6 205 3.8 5132,8 195 75 120 5.1
9070 577+30 325 5118,3 5120.1 42 5.5 5120.3 45 15 30 7.1
9060 572+80 355 5112.8 5114.1 53 5.0 5114.4 50 20 30 6.2
9050 569+50 370 5107.6 5109,4 78 4.5 5109.6 45 25 20 5,3
9040 566+30 390 5104.6 5106.1 100 5.2 5106.2 40 15 25 6.8
9030 562+90 410 5099.3 5101.1 70 5.6 5101.2 40 25 15 6.9
9020 559+70 430 5094.6 5096.2 88 5.2 5096.5 50 35 15 6.8
9010 556+55 450 5089,7 5091,3 79 5.1 5091.4 35 15 20 7.1
550+00 Confluence With Brantner Gulch
MINOR TRIBUTARY II-C
7060 826+ 70 200 5183,8 5186.1 48 4.7 N/A N/A9
7050 823+85 200 5176.9 5178.4 52 5.4 N/A N/A9
7040 720+55 200 5165.5 5168.4 23 5.3 N/A N/A9
7030 816+30 200 5154.5 5157.0 25 6.5 N/A N/A9
7020 812+60 200 5146.1 5149.7 39 4.0 N/A N/A9
7010 805+00 200 5133.0 5135.2 30 5,9 N/A N/A9
6110 800+40 200 5122.6 5124.5 105 1.3 N/A N/A9
800+00 Confluence With Tributary II
SUB-TRIBUTARY II-B
6280 733+30 600 5204.5 5224.5 160 0.4 5225.0 130 80 50 0,4
6270 732+85 Holly Street 600 5202.9 5224.0 137 5.6 5224,3 85 50 35 5.7
(9) Floodway is same as floodplain.
~ TABLE 3 FLOOD HAZARD AREA DELINEATION
CON~UlTl..... SELLARDS & GRIGG, INC. TABULAR FLOOD PLAIN AND FLOODWAY DATA
[NDIN [(:"5 URBAN DRAINAGE AND FLOOD CONTROL DISTRICT
11.!> W. 1HH IIlV(flIUE . COTTOfllWOOO 'lAZ.., ,
l,t,K(WQOD, COLOAA.OQ ,02U 23'.6411 BRANTNER GULCH CITY OF THORNTON
ADAMS COUNTY