FLOOD07627

• Designation Number: 220
• County: Douglas
• Community: Unincorporated Douglas County
• Stream Name: Marcy Gulch
• Basin: South Platte
• Title: Flood Hazard Area Delineation - Marcy Gulch
• Date: 2/1/1983
• Designation Date: 3/1/1984
• Floodplain - Doc Type: Floodplain Report/Masterplan

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FLOODING SOURCE FLOOD PLAIN DATA FLOODWAY DATA'[)
CROSS STATION QIOO STREAM 100YR. 100 YA. 100YR. FLOODWAY WIDTH (FT)(Z) FLOODWAY
IDENTIFICATION BED ELEV. FLOOD ELEV. ELEV.
SECTION (FT) (CFS) (MSL) (MSL) WIDTH (FT) R. BANK L. BANK TOTAL {MsLl
61 138 + 40 2587 5565.7 5570.8 129.3
62 140 + 40 2587 5567.3 5573.8 89.1
63 141 + 75 2587 5569.1 5575.7 96.3
64 144 + 85 2587 5572.9 5577.8 183.4
65 146 + 80 2587 5574.8 5580.6 162.6
66 149 + 20 2587 5578.1 5583.5 94.8
67 151 + 60 2587 5581.1 5587.7 246.9
68 153 + 48 2587 5583.3 5589.1 125.9
69 155 + 60 2587 5587.3 5591.9 138.3
70 158 + 00 2587 5591. 0 5595.6 135.0
71 159 + 45 2587 5592.3 5597.7 83.7
72 162 + 00 2587 5596.4 5602.6 70.0
73 165 + 00 2587 5600.4 5606.6 107.4
North Hiqhlands Ranch Parkway ~ 74 167 + 85 1980 5603.9 5609.1 79.2
Beoin Backwater Condition 75 170 + 40 1980 5607.3 5612.6 101. 5
76 173 + 00 1980 5610.6 5616.7 102.0
77 175 + 00 1980 5614.4 5619. 1 74.3
77A 175 + 55 1980 5621. 0 5723.2 128.8
78 178 + 15 1980 5619.8 5625.0 140.2
Upstream Limit of Backwater 79 181 + 80 1980 5622.9 5627 .5 115.7
Effects Due to Culvert at 80 184 + 20 1980 5625.1 5630.5 139.1
Station 167 + 85 81 185 + 90 1980 5626.4 5632.9 139.9
82 190 + 30 1980 5631. 2 5536.0 155.8 208.1 17.4 225.5 5636.5
83 192 + 00 1980 5634.1 5639.3 133.0 86.6 56.6 143.2 5639.5
84 193 + 60 1980 5636.8 5642.1 99.2
8:; 195 + 60 1980 5641. 2 5645.4 117.8
86 198 + 40 1980 5645.1 5649.8 261. 6
East Ranch Road Crossinq 87 199 + 49 1980 5650.0 5651. 9 321. 0
88 199 + 76 1980 5647.4 5652.6 390.7
89 202 + 20 1980 5651. 5 5655.5 108.4
90 205 + 00 1980 5654.8 5659.0 122.5

(1) FloodYlcy data are based on encroachment causing up to 0.5 ft. vertical rise in the 100-year flood ele\'f.tion.
~~erc floodway data are not given they shall be assumed to be identical to the flood plain data.

(2) Left and right distances are measured from the cen~er of the flowline of the channel looking downstrea~.

Jo.ck G. RGub Company
Eogio.."';?''ng & Pb"",,'~

URBAN DRAINAGE AND FLOOD CONTROL DISTRICT
FLOOD HAZARD AREA DELINEATION
DOUGLAS COUNTY

FLOOD PLAIN AND FLOODWAY REFERENCE DATA

MARCY GULCH

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