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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 />THORNTON MUNICIPAL GOLF COURSE <br />FLOODPLAIN/HYDRAULIC ANALYSIS REPORT <br />BIG DRY CREEK FLOODPLAIN <br /> <br />TABLE OF CONTENTS <br /> <br />Section <br /> <br />Description <br /> <br />EXECUTIVE SUMMARY. <br /> <br />I <br /> <br />. . . . . . . . . . . . . . . . . . . . . . . <br /> <br />II HYDROLOGIC DATA <br /> <br />Introduction . . . . . . . . . . . . . . . . . . . <br />Design Storm Flows . . . . . . . . . . . . . . . <br />Urban Drainage and Flood Control District <br />Federal Emergency Management Agency <br /> <br />Low Flows. . . . . . . . . . . . . . . . . . . . <br /> <br />III FLOODPLAIN HYDRAULICS <br /> <br />Introduction . . . . . . . . . . . . . . . . . . . . <br />Existing Conditions Downstream of 136th Avenue. <br />Proposed Conditions Downstream of 136th Avenue <br />Existing Conditions at 136th Avenue and Upstream. <br />Stream Morphology . . . . . . . . . . . . . . . <br />Existing Floodplain Conditions . . . . . . . . . <br />Proposed Conditions at 136th Avenue and Upstream <br />Floodplain and Floodway . . . . . . . . . . <br />High Velocity Protection. . . . . . . . . . <br />Previous and Current Modeling of 1-25 . . . . . <br />Urban Drainage and Flood Control District <br />Federal Emergency Management Agency <br />Proposed Improvements to 1-25 . . . . . . . . . <br /> <br />" <br /> <br />LIST OF TABLES <br /> <br />No. Title <br /> <br />III-I Existing Conditions - Water Surfaces and Velocities <br />III-2 Big Dry Creek Flooding Depth on Golf Course. <br /> <br />LIST OF FIGURES <br /> <br />No. Title <br /> <br />III-I Proposed 1-25 Improvements . . . <br />III-2 Proposed 1-25 Bridge Improvements <br /> <br />Page <br /> <br />I-I <br /> <br />II-I <br />II-I <br />II-I <br />II-2 <br />II-2 <br /> <br />III-I <br />III-2 <br />III-3 <br />III-4 <br />III-4 <br />III-4 <br />III-6 <br />III-6 <br />III-B <br />III-IO <br />III-IO <br />III-ll <br />III-12 <br /> <br />Page <br /> <br />III-5 <br />III-B <br /> <br />Page <br /> <br />III-13 <br />III-14 <br />