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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 />il <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />TABLE OF CONTENTS <br /> <br />LETTER OF TRANSMITTAL <br /> <br />I SUMMARY <br />The St udy Area <br />Major Drainageway Plan Improvements <br /> <br />II BASIN DESCRIPTION <br />Reach I (Upper Limit of Study to Main Street) <br />Reach 2 (North Tributary - Upper Limit to Main Street) <br />Reach 3 (Main Street to East 10th Avenue) <br />Reach 4 (East 10th Avenue to Sheridan Boulevard) <br />Reach 5 (Sheridan Boulevard to Mobile Home Park) <br />Reach 6 (Mobile Home Park to Lowell Boulevard) <br />Reach 7 (Lowell Boulevard to Big Dry Creek) <br /> <br />III HYDROLOGICAL SUMMARY <br />Hydrology for Direct Flow Area 3207 <br />Rainfall <br />Soils <br />Infiltration <br />Determination of Design Flows <br /> <br />IV FLOODPLAINS <br />Genera 1 <br />Flood Frequency <br />Hydraulic Analysis <br />Flood Damages <br /> <br />V PHASE A ALTERNATIVES <br />General Comments <br /> <br />VI PHASE B MAJOR DRAINAGEWAY PLANNING <br /> <br />Appendices <br />Appendix A <br />Appendix B <br />Appendix C <br /> <br />Legal Opinion <br /> <br />Agency/Interested Party Contact <br />Recommended Criteria for Major Drainageway <br />Projects <br /> <br />References <br /> <br />PAGE <br />I <br />I <br />I <br /> <br />I-I <br />II-I <br />III-l <br />III-2 <br />V-I <br />V-2 <br />V-3 <br />VI-l <br />VI-2 <br />VI-3 <br /> <br />4 <br />4 <br />7 <br />7 <br />7 <br />7 <br />7 <br />8 <br /> <br />9 <br />9 <br />9 <br />9 <br />9 <br />11 <br /> <br />15 <br />15 <br />15 <br />15 <br />15 <br /> <br />II-I <br />II-2 <br />III-l <br />I II-2 <br />I II-3 <br />I II-4 <br />VI-l <br /> <br />16 <br />16 <br /> <br />21 <br /> <br />a-I <br />a-3 <br /> <br />a-4 <br /> <br />a-7 <br /> <br />LI ST OF TABLES <br /> <br />Summary of Total Costs - Phase B <br />General Basin Data <br />Incremental Rainfall Data <br />Peak Runoff Flows <br />Phase A Alternatives <br />Benefit/Cost Comparison <br />Benefit/Cost Comparision - Phase A Addendum <br />Summary of Total Costs - Phase B <br />Unit Prices <br />Drainage and Flood Control System Annual O&M Costs <br /> <br />LIST OF FIGURES <br /> <br />Drainage Basin Boundary <br />Channel Reach Delineation <br />Rainfall Depth-Duration-Frequency Graphs <br />Summary of Flood Flows <br />Typical Hydrographs <br />Typical Hydrographs <br />Sheet Index/ Legend for Major Drainageway Planning <br />Drawings <br /> <br />Major Drainageway Planning Drawings with Commentary and <br />Estimated Construction Costs <br /> <br />PAGE <br /> <br />3 <br />4 <br />9 <br />11 <br />17 <br />18 <br />20 <br />21 <br />22 <br />23 <br /> <br />PAGE <br /> <br />5 <br />6 <br />10 <br />12 <br />13 <br />14 <br /> <br />26 <br /> <br />Sheets I <br />through 9 <br />