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<br />. <br /> <br />. <br /> <br />. <br /> <br />effective tenth-foot floodway and 500-year product 6 corridor delineations as shown on Sheet <br />LIB. <br /> <br />It should be noted that within the current study reach, at Cross Sections AQ:226167, <br />AR:227397, 227437, AS:228117, the effective tenth-foot floodway has a O.2-foot surcharge. <br />The tenth-foot floodway surcharges in excess of 0.1 feet were accepted by the City of Fort <br />Collins as shown in Appendix B.l.4. The effective COFC floodway data table is located in <br />Appendix B.l.4. The input/output HEC-2 printouts for the effective tenth-foot rise floodway <br />model are provided in Appendix G. A digital copy of the effective HEC-2 models utilized for <br />the current study is provided on the disk included with this report. <br />Due to incompatibility between HEC-2's split flow methodology and HEC-2's flow <br />distribution methodology; QT cards in the product 6 corridor model [RCUP5D05] were <br />"hardwired" to the calculated discharge values from the LOW599 and RCUPR505 500-year <br />floodplain models. A comparison of the effective product 6 corridor delineation and the Oxbow <br />Levee Project as-built topography (see Appendix BA.6) indicated that the levee project did not <br />encroach on the product 6 corridor. Therefore. based on direction from City of Fort Collins staff <br />and no topographic modifications within the effective product 6 corridor; updating the effective <br />product 6 corridor model was not required for the current study. <br /> <br />COFC2003-10 Oxbow FINAL LOMR.doc <br /> <br />3.9 <br /> <br />ANdERSON CONsulTiNG ENGiNEERS, INC. <br />