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<br /> 2 <br /> ELEVATION DIFFERENCE BASE FLOOD <br /> 1 BETWEEN 1% (lOO-YEAR) FLOOD AND FLOOD <br />FLOODING SOURCE PANEL HAZARD ZONE ELEVATION 3 <br /> 10% 2% 0.2% FACTOR (FEET NGVD) <br /> (lO-YEAR) (50-YEAR) (500-YEAR) <br />Helmer Gulch <br />Alluvial Fan Flooding 1353 N/A N/A N/A N/A AO Depth 1 <br /> Velocity 4 FPS <br /> 1353 N/A N/A N/A N/A AO Depth 1 <br /> Veloci ty 5 FPS <br /> 1353 N/A N/A N/A N/A AO Depth 1 <br /> Velocity 6 FPS <br />Ramsey Gulch 1354 N/A N/A N/A N/A AO Depth 1 <br /> Velocity 4 FPS <br />Alluvial Fan Flooding 1354 N/A N/A N/A N/A AD Depth 1 <br /> Velocity 5 FPS <br /> 1354 N/A N/A N/A N/A AO Depth 1 <br /> Veloci ty 6 FPS <br /> 1354 N/A N/A N/A N/A AO Depth 2 <br /> Velocity 6 FPS <br />Alkali Creek <br />Reach 1 1015 -2.1 -0.7 1.8 020 A4 Varies - See Map <br /> <br />1 <br />Flood Insurance Rate Map Panel <br /> <br />2 . <br />We,ghted Average <br /> <br />3 <br />Rounded to Nearest Foot <br /> <br />-l <br />=-- <br />CD <br />r- <br />"' <br />W <br /> <br />FEDERAL EMERGENCY MANAGEMENT AGENCY <br /> <br />FLOOD INSURANCE ZONE DATA <br /> <br />GARFIELD COUNTY,CO <br />(UNINCORPORATED AREAS) <br /> <br />HELMER GULCH-RAMSEY GULCH-ALKALI CREEK <br />