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Last modified
1/25/2010 6:26:32 PM
Creation date
10/4/2006 11:30:41 PM
Metadata
Fields
Template:
Floodplain Documents
County
Weld
Community
Greeley
Stream Name
Cache La Poudre River
Basin
South Platte
Title
Master Floodway Plan
Date
8/1/1983
Prepared For
Greeley, CWCB
Prepared By
Simons Li & Associates Inc.
Floodplain - Doc Type
Floodplain Report/Masterplan
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<br />I <br />I, <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />. <br />I <br />;. <br />I <br />I <br />I <br /> <br />.' <br />I <br />I <br />I <br /> <br /> <br /> <br />13 <br /> <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I, <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />1\ <br />I <br />. <br />I <br /> <br />AREA OF FLOOD PLAIN <br />THAT COULD BE <br />USED FOR DEVELOPMENT <br />BY RAISING GROUND <br /> <br />Table 2. Summary of Bridge Capacities. <br /> <br /> Location Capacity * Flood Frequency <br />U. S. 85 Bypass B,OOO cfs 50-year <br />8th Street (Colorado 263) 3,500 cfs la-year <br />5th Street 3,500 cfs la-year <br />6th Avenue 3,500 cfs la-year <br />Union Pacific Railroad 15,000 cfs 500-year ** <br />8th Avenue (U. S. 85 Business Route) 8,100 cfs 100-year <br />11th Avenue 15,000 cfs SOO-year ** <br /> <br />1-4 <br /> <br />FLOODWAY <br />FRINGE <br /> <br />FLOOD ELEVATION <br />WHEN CONFINED WITH- <br />IN FLOOOWAY J\ <br /> <br />* Capacity is computed to low-chord elevation and does not include the <br />effects of debris blockage. <br /> <br />** Bridge capacity exceeds channel capacity and flood flows will bypass <br />bridge. <br /> <br />14 <br /> <br />100-YEAR FLOOD P~AIN <br /> <br />~I <br /> <br />FLOODWAY <br /> <br />FLOODW,.V <br />FRINGE <br /> <br />STREAM <br />CHANNEL <br /> <br />SURCHARGE <br /> <br />FLOOD ELEVATION <br />BEFORE ENCROACHMENT <br />ON FLOOD PLAIN <br /> <br />NOTE: SURCHARGE IS NOT TO ~XCEED 1.0 FOOT (FIA REQUIREMENT) <br /> <br />FIGURE 6. FLOODPLAIN SCHEMATIC <br />
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