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<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 />I <br />I <br />I <br />I <br /> <br />discharges for the 10-, 50, 100- and 500-year frequencies at the confluence <br />with the Arkansas River have been adjusted proportionately to the area <br />according to the discharge area relations for mountain region streams in <br />Reference 1. The results of CDM's station analysis compares within 10 <br />percent for all frequencies to the flows contained in the Flood Hazard <br />Analysis for Cottonwood Creek. For this reason, the recommendation was <br />made to use the hydrologic information contained in the existing flood <br />information for Cottonwood Creek, (reference CDM's letter to FEMA, May 2, <br />1980, contained in Appendix A). <br /> <br />The review of literature during the Buena Vista flood insurance study <br /> <br />effort revealed no existing technical information on peak discharges for <br /> <br />the Arkansas River at Buena Vista. CDM performed a Log-Pearson Type III <br /> <br />stream gage analysis of the gage station at Buena Vista, as described in <br /> <br />Reference 8. The peak discharges for the 10-, 50-, 100- and 500-year were <br /> <br /> <br />determined and recommended for use in the approximate study of the Arkansas <br /> <br />River in Buena Vista. <br /> <br /> <br />Recommended peak flow rates have been summarized in Table 1, for both <br />Cottonwood Creek and the Arkansas River in Buena Vista. <br /> <br />City of Canon City, Colorado <br /> <br />The streams included in the flood insurance study for the City of Canon <br />City are the Arkansas River, Sand Creek, Forked Gulch, Northeast Canon <br />Drainage and Southeast Canon Drainage (see Appendix B for locations). The <br />literature search revealed hydrologic information for the Arkansas River <br /> <br />7 <br />