FLOOD03385

• Designation Number: 312
• County: Arapahoe
• Community: Littleton
• Stream Name: Lower Dad Clark Gulch, and DFA 0068
• Basin: South Platte
• Title: Flood Hazard Area Delineation - Lower Dad Clark Gulch, and DFA 0068
• Date: 11/1/1990
• Designation Date: 3/1/1991
• Floodplain - Doc Type: Floodplain Report/Masterplan

I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I

TABLE B-1
FLOODPLAIN AND FLooDWAY
REfERENCE DATA

Floodplain Data Floodway Data 10- Year Data 50-Year Data
100-Year Floodplain 100-Year Floodwlly Floodway Floodway!! Floodway!! Floodway
Cross Stream 100-Year Water Top Channel Water Top Width Width Channel Water Water
Section Thalweg Discharge Surface Width Velocity Surface Width Left Right Velocity Discharge Surface Discharge Surface
Number Station!! Elevation (cis) Elevation (ft) (fUsee) Elevation (ft) (ft) (ft) (fUsee) (cis) Elevation (cis) Elevation
RANGEVIEW GULCH
2.3 12+10 5358.0 650 ! 5361.1 52 8.0 ~ 5361.7 63 30 33 8.6 370 5360.3 750 5360.9
2.5 14+60 5364.0 650 ! 5368.5 30 9.0 ~ 5369.3 34 14 20 9.7 370 5367.6 750 5368.4
3.0 17+45 5372.0 650 ! 5374.5 51 3.4 ~ 537$.1 63 17 46 4.3 370 5373.7 750 5374.3
3.5 19+55 5372.0 820 ! 5375.8 85 2.4 ~ 5376.5 89 19 70 2.4 370 5374.9 750 5375.6
3.8 22+80 5368.0 950 5376.1 176 0.7 ~ 5376.7 180 40 140 0.6 370 5375.0 750 5375.9
4.0 24+70 5372.0 950 5376.1 93 1.9 ~ 5376.7 97 24 73 1.6 370 5375.0 750 5375.9
4.5 26+20 5372.0 950 5376.3 77 2.3 ~ 5376.8 80 18 62 2.0 370 5375.1 750 5376.0
70 29+25 5370.3 870 5376.9 369 1.6 53n.2 371 188 183 1.3 340 5375.3 690 5376.6
75 34+80 5382.7 870 5384.6 125 6.4 5384,6 86 28 58 6.9 340 5383.9 690 5384.4
80 36+12 5385.8 870 5388.5 89 7.3 5388.5 89 59 30 72 340 5387.7 690 5388.3
85 37+08 5390.3 870 5391.5 265 6.4 5391.8 120 72 48 7.4 340 5391.1 690 5391.4
90 40+05 5399.6 680 5401.3 225 6.6 5401.3 110 50 60 7.5 260 5400.8 500 5401.1
95 44+48 5410.0 560 5411.6 140 6.7 5411.6 77 28 49 7.3 200 5411.0 420 5411.4
100 49+05 5419.5 560 5420.7 138 5.4 5420.7 102 32 70 5.7 200 5420.2 420 5420.5
105 49+60 5419.5 480 5421.4 107 4.6 FLOODWAY IN CHANNEL 170 5420.9 370 5421.2
110 54+90 5420.1 480 5424.1 84 2.8 . 170 5423.0 370 5423.8
115 57+40 5423.8 480 5426.6 35 7.7 . 170 5425.5 370 5426.3
120 58+45 5437.3 390 5438.5 144 4.5 . 140 5438.1 310 5438.4