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., ... u',,,., "''"'''''''',_...._~.........~...,..,.....,...AoI''''__'''..,~__..... .... .~_....._._,~__,__ .._...__~.....__, _,,,._~,..,.,,. ~~~,>>""ur ELEVATION DIFFERENCE2 BETWEEN 1% (100- YEAR) FLOOD AND FLOOD BASE FLOOD FLOODING SOURCE PANEL1 HAZARD ZONE ELEVATION 10% 2% 0.2% FACTOR (FEET NGVD)l (10 - YEAR) (50 - YEAR) (500 - YEAR) South Platte River . Reach 1 0645 -2.1 -0.7 1.4 020 A4 Varies - See Hap I Reach 2 0637, 0645 -3.1 -1.0 1.1 030 A6 Varies - See Map Reach 3 0637, 0645 -4.7 -1.9 1.9 045 A9 Varies - See Map Reach 4 0637, 0639 0645 -3.2 -1.1 2.0 030 A6 Varies - See Map Reach 5 0638, 0639 -1.9 -0.6 1.5 020 A4 Varies - See Map Reach 6 0638, 0639 0175 -3.3 -1.2 2.1 035 A7 Varies - See !-lap Reach 7 0868 -1.2 -0.5 1.7 010 A2 Varies - See ~ap Reach 8 0868, 0981 -0.6 -0.2 0.9 005 Al Varies - See !-lap Reach 9 0981 -2.3 -0.6 0.8 025 A5 Varies - See Map . Sheetflow Area 0645 N/A N/A MIA N/A AO Varies - See ~ap U.S. Highway 34 Levee Overflow Channel -3.84 -2.14 Reach 1 0637 2.3 040 A8 Varies - See Map Reach 2 0637 -0.55 -0.55 1.6 005 Al Varies - See Map Cache La Poudre River Reach 1 0637, 0645 -2.1 -0.8 1.6 020 A4 Varies - See Hap Reach 2 0637 -1.3 -0.5 1.1 015 A3 Varies - See Hap Reach 3 0628, 0636 0637 '-3.4 -0.9.. 1.9 035 All Varies - See Hap Reach 4 0609, 0628 /" -L.U -U.) 1.J UlU A4 Varies - See Map / tFlood Insurance Rate Map Panel ./ 410- and 50.year Elevations are Based Upon the. Elevations at Cross 2Weighted Average Section F and the Overflow Channel Invert 3Rounded to Nearest Foot REVISED DATA 'NO 10- and 50-year Flooding. Elevations are based Upon the channfiYISED TO T A B L E 3 WELD COUNTY, CO (UNINCORPORATED AREAS) FLOOD INSURANCE ZONE SOUTH PLATTE RIVER - SHEETFLOW AREA - U WJ013}$3 1994 LEVEE OVERFLOW CHANNEL - CACHE LA POUDRE RIVER FEDERAL EMERGENCY MANAGEMENT AGENCY ..- --.--...--....-.......