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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r---"-- FLOOD PLAIN DATA:
LOCATION 100-YEAR FLOODWAY DATA: 100- YEAR 39
I 100 YEAR THALWEG2 WATER MEAN WATER DISTANCE;:! DISTANCE 4 MEAN
SECTION TOP TOP
NUMBER STATION DESCRIPTION DISCHARGE ELEVATION SURFACE WIDTH {FT} VELOCITY SURFACE WIDTH {FT.} LEFT (FT.) RIGHT {FT.} VELOCITY
(CFS) ELEVATION (FT/SEC,) ELEVATION (FT./SEC.)
TRIBUTARY II - CONT'D
4040 608+ 10 1800 5041. 1 5048.3 102 6.3 5048.5 60 30 30 7.9
4030 605+55 1800 5039.5 5045.4 122 7.6 5045.8 75 60 15 8.1
4020 603+40 1800 5037.5 5045.2 220 2.9 5045.6 200 10 190 4.0
4010 602+50 1800 5037.0 5045.0 500 3.6 5045.5 190 35 155 3.0
600+00 Confluence With Brantner Gulch
TRIBUTARY I
3140 954+60 300 5114,5 5117.2 60 4.8 511 7 . 6 30 10 20 5.0
3130 949+95 300 5107.1 5108,7 53 5.7 5109.0 35 20 15 6.7
3120 944+95 300 5097,8 5099.5 61 5,2 5099.9 35 15 20 5.8
3110 940+50 300 5089.2 5090.4 70 4.8 5090.8 60 30 30 5.9
3100 936+95 300 5080.8 5084.3 68 4.3 5084.7 30 15 15 5.1
3090 932+50 300 5075.6 5077.1 40 5.7 5077 . 4 35 15 20 6.4
3080 929+50 300 5070.6 5076.9 135 1.7 5077 .4 105 60 45 0.6
3070 927+00 300 5070.9 5076.9 195 0.7 5077 ,4 175 90 85 0.3
3064 925+00 Stock Pond Dam 500 5072.0 5076.9 440 5.6 5077 . 0 260 95 165 4.6
3060 924+05 500 5061.2 5063.5 129 4.0 5063.7 130 25 105 3.7
3050 919+90 500 5056.2 5058.4 73 5.1 5058.7 40 25 15 6.4
3040 916+55 500 5052.1 5054,3 60 4.8 5054.6 50 20 30 5.1
3030 915+15 500 5050.6 5052.6 80 4.1 5052.8 60 35 25 4.7
3020 914+20 500 5049,6 5051.6 87 3.9 5051.7 70 35 35 4.4
3010 912+40 500 5046.8 5048,5 95 5.6 5048.5 70 40 30 6.2
4010 910+00 500 5043.5 5045.0 500 1.0 5045.4 295 95 200 0.8
1360 908+10 500 5041,0 5044,9 630 0.2 5045.4 335 30 305 0.3
900+00 Confluence With Brantner Gulch
9550 1262+00 REGIONAL PARK - S. TRIBUTARY VI 440 5084.0 5088,5 40 7.2 5088.4 25 20 5 8,8
9540 1259+00 440 5081. 4 5085,1 60 4.7 5085.1 30 20 10 7.0
9530 1255+80 440 5079.4 5081.3 60 5,5 5081. 6 40 25 15 6.5
9520 1253+20 440 5075.7 5077 ,3 65 6.0 5077 ,6 40 30 10 7.1
9510 1250+20 440 5071.7 5073,3 80 4.2 5073.4 60 15 45 4.7
TABLE 3 FLOOD HAZARD AREA DELINEATION
CC,,",SULT....c ~ SELLARDS & GRIGG, INC, TABULAR FLOOD PLAIN AND FLOOD WAY DATA URBAN DRAINAGE AND FLOOD CONTROL DISTRICT
[NG'''' [["5
,1O~ 1'\1 IHH "'V[""VI . COTTO",WOOO PLAZA. CITY OF THORNTON
l......EWQOO. COLOI'I"'QO ,02U 238Ul1 BRANTNER GULCH
ADAMS COUNTY