FLOOD00959

• Designation Number: 143
• County: Denver
• Community: Denver
• Stream Name: Marston Lake North
• Title: Flood Hazard Area Delineation - Marston Lake North
• Date: 2/1/1979
• Designation Date: 3/18/1979
• Prepared For: Denver
• Prepared By: UDFCD
• Floodplain - Doc Type: Floodplain Report/Masterplan

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100-yr. Floodplain Data (100-Yr.) F100dway Data (100-Yr.)
Flood (0.5-Ft. Increase in WSE)
Cross Discharge Stream Bed Flood E1ev. Velocity Floodplain Floodwav Width (Ft.) Velocity F100dway
Identification Section Station (CFS) Elev. (MSL) (MSL) (FPS) Width (Ft.) Left Right Total (FPS) E1ev. (Ft. )
134 121 + 40 620 5533.5 5541. 5 1.3 140 85 30 115 2.5 5541.6
135 125 + 50 620 5533.7 5541. 5 0.3 480 45 15 60 5.3 5541.6
136 131 + 20 620 5534.7 5541. 5 0.4 640 30 30 60 5.0 5542.1*
137 136 + 10 1040 5537.7 5541.5 0.2 1220 230 40 270 0.9 5542.6*
138 139 + 60 1040 5535.1 5541. 5 0.3 560 160 70 230 0.7 5542.6*
139 OMITTED FROM HEC-2 RUN - - - - - - - - -
140 142 + 30 1040 5539.5 5548.2 0.2 1220 360 110 470 0.3 5548.2
141 146 + 20 740 5546.2 5548.2 0.4 990 230 70 300 0.4 5548.2
142 150 + 40 740 5552.8 5554.8 - 370 60 100 160 5.1 5554.8
142.5 153 + 10 740 5556.0 5551. 0 - 120 45 20 65 6.3 5557.5
Lakes Lake 144 156 + 00 740 5558.9 5563.2 - 60 10 10 20 3.6 5563.2
144.2 158 + 50 740 5560.9 5563.8 1.1 340 100 100 200 1.3 5564.3
144.4 164 + 20 740 5560.8 5563.9 0.7 470 100 100 200 1.1 5564.4
144.6 170 + 90 740 5561. 5 5563.9 0.9 420 100 100 200 1.3 5564.4
145.2 176 + 80 280 5565.9 5566.5 3.7 185 25 55 80 4.8 5566.8
146 181 + 40 280 5568.1 5569.9' 3.5 110 30 50 80 3.5 5569.9

*Difference between 100-year WSEL and 100-year F100dway greater than 0.5 feet. because of flow increase between floodplain and f100dway runs.
Cross-sections stationed 1eft-to-right, facing downstream.

MARSTON LAKE NORTH

URBAN DRAINAGE e. FLOOD CONTROL DISTRICT
FLOOD HAZARD AREA DELINEATION
DENVER

TABLE
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FLOOD PLAIN AND FLOODWAY REFERENCE DATA