HomeMy WebLinkAboutFLD15-0001 Stamped AMEC Letter.pdfSupporting Documents
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Figure 1: 100-year Flood Profile
Figure 2: Cross Section locations
Supporting Documents
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Figure 3: Cross Section of Proposed Fill
Figure 4: Stream Cross Section Schematic (for discussion purposes only –not to scale)
Floodplain top width 220 ft
Length of proposed fill impacting flood water 50 ft
Depth of water at proposed fill 0.5 ft
Cross section area of displaced water (50 * 0.5) / 2 = 12.5 ft2
New Floodplain top width 220 ft –50 ft = 170 ft
Potential rise in floodplain due to proposed fill 12.5 ft2 / 170 ft = 0.07 ft =0.9 inches