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 FLO~8l PLAIN DATA: FLOODWAY DATA: 100- YEAR 41
I O-YEAR
SECTION I 100 YEAR THALWEG2 WATER MEAN WATER DISTANCE~ DISTANCE 4 MEAN
STA TION DESCRIPTION DISCH~~GE SURFACE TOP VELOCITY SURFACE TOP
NUMBER (CFS ELEVATION ELEVATION WIDTH (FT.) IFT./SEC.l ELEVATION WIDTH (FT.) LEFT (FT.) RIGHT (FT.) VELOCITY
(FT./SEC.)
REGIONAL PARK - NORTH
TRIBUTARY VII
9750 1119+50 480 5074.8 5076.6 70 6,0 5076.6 45 25 20 6.7
9740 1117+00 480 5070.6 5072.6 80 6.3 5072.6 45 25 20 7.0
9730 1113+10 480 5066.0 5068,8 400 0.7 5069.3 350 260 90 0.6
9720 1111 +60 E. 136th Avenue 810 5064.9 5068.2 260 5.1 5068.4 230 50 180 6.9
9710 1110+10 810 5061. 8 5063,2 175 4.6 5063.3 175 120 55 4.3
9700 11 07+ 10 810 5056.6 5058.2 170 5.4 5058.4 90 80 10 6.9
9690 1103+60 810 5050.4 5052.3 140 5.9 5052.6 95 70 25 6.6
9680 11 00+50 810 5043.7 5046.5 90 7.0 5046.5 60 25 35 7.6
9670 1097+60 810 5040.2 5042.9 95 6.1 5043.1 60 35 25 6.1
9660 1094+50 810 5036.4 5038.8 82 7.3 5039.1 40 25 15 8.7
9650 1091+50 810 5028,8 5032.4 65 8.1 5032.4 50 20 30 8.2
9645 1088+50 920 5028.0 5031.7 90 2.6 5031.8 60 25 35 3,8
9638 1086+70 920 5028.8 5031. 2 340 4.4 5031.1 250 195 55 4.2
9628 1086+00 Riverda1e Road 920 5027.9 5029.8 455 5.5 5029.7 450 440 10 5.4
9618 1077+95 920 5019,0 5018.9 680 4.3 N/A N/ A""
9310 1 071+60 920 5008.5 5009.0 N/A IS 0,1 N/A N/A 14
9300 1067+95 920 5006,3 5006,8 N/A IS 0.1 N/A N/A 14
9290 1064+90 920 5004.3 5005.0 N/A,lS 0.2 N/A N/A 14
9280 1061+80 920 5002,3 5003.4 N/A \5 0.4 N/A N/A 14
9270 1058+90 920 5000.9 5001.5 N/A 15 0,7 N/A N/A 14
9260 1055+80 S. Platte Riv. 10-Yr. WS E1ev. 920 4999,0 5001.4 N/A 15 0.4 N/A N/AI4
(15 ) Top Width indeterminate because of combined floodplain of Tributary VII,
Tributary VI, Brantner Gulch, and the South Platte River.
~ TABLE 3 FLOOD HAZARD AREA DELINEATION
......,. Y'''G SELLARDS & GRIGG. INC. TABULAR FLOOD PLAIN AND FLOODWAY DATA URBAN DRAINAGE AND FLOOD CONTROL DISTRICT
. .. ~ - f f. I
17.' W. ..Ttl AVI"U( . COTTOIllWOOD 'LAlA I
LAKfWOOD. COLOAAOQ to2U 231.UII BRANTNER GULCH CITY OF THORNTON
ADAMS COUNTY