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<br /> ELEVATION DIFFERENCE2 <br /> BETWEEN 1 % (100 - YEAR) FLOOD AND FLOOD BASE FLOOD <br />FLOODING SOURCE PANEL1 HAZARD ZONE ELEVATION <br /> 10% 2% 0,2% FACTOR (FEET NGVD)3 <br /> (10-YEAR) (50. YEAR) (500 - YEAR) <br />South Platte River <br />Reach 1 0645 -2.1 -0.7 1.4 020 A4 Varies - See Map <br />Reach 2 0637, 0645 -3,1 -1.0 1.1 030 A6 Varies - See Map <br />Reach 3 0637, 0645 -4.7 -1.9 1.9 045 A9 Varies - See Map <br />Reach 4 0637, 0639 <br /> 0645 -3.2 -1.1 2.0 030 A6 Varies - See Map <br />Reach 5 0638, 0639 -1.9 -0.6 1.5 020 A4 Varies - See Map <br />Reach 6 0638, 0639 <br /> 0775 -3.3 -1.2 2.1 035 A7 Varies - See Map <br />Reach 7 0868 -1.2 -0.5 1.7 010 A2 Varies - See ~ap <br />Reach 8 0868, 0981 -0.6 -0.2 0.9 005 Al Varies - See Map <br />Reach 9 0981 -2.3 -0.6 0.8 025 A5 Varies - See Map <br />Sheet flow Area 0645 N/A N/A N/A N/A AO Varies - See ~ap <br />U.S. Highway 34 Levee <br />Overflow Channel <br />Reach 1 0637 -3.84 -2.14 2.3 040 A8 Varies - See Map <br />Reach 2 0637 -0.55 -0.55 1.6 005 Al Varies - See Map <br />Cache La Poudre River <br />Reach 1 0637, 0645 -2.1 -0,8 1.6 020 A4 Varies - See Map <br />Reach 2 0637 -1.3 -0.5 1.1 015 A3 Varies - See Map <br />Reach 3 0628, 0636 <br /> 0637 -3.8 -1.1 2.0 040 A8 Varies - See Map <br />Reach 4 0609, 0628 -2.0 -0,5 1.3 020 A4 Varies - See Map <br /> <br />1 Flood Insurance Rate Map Panel <br />2Weighted Average <br />3Rounded to Nearest Foot <br /> <br />410_ and 50-year Elevations are Based Upon the Elevations at Cross <br />Section F and the Overflow Channel Invert <br />5No 10- and 50-year Flooding. Elevations are based Upon the Channel Invert <br /> <br />FEDERAL EMERGENCY MANAGEMENT AGENCY <br /> <br />T <br />A <br />B <br />L <br />E <br />3 <br /> <br />WELD COUNTY, CO <br />(UNINCORPORATED AREAS) <br /> <br />FLOOD INSURANCE ZONE DATA <br />SOUTH PLATTE RIVER. SHEETFLOW AREA. U.S. HIGHWAY 34 <br />LEVEE OVERFLOW CHANNEL - CACHE LA POUDRE RIVER <br />