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<br />I <br />II <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 />Chapter <br /> <br />2 <br /> <br />3 <br /> <br />ROCK CREEK PROJECT <br />REPORT ON FEASIBILITY INVESTIGATIONS <br />VOLUME I - REPORT <br /> <br />CONTENTS <br /> <br />Page <br /> <br />SUMMARY <br /> <br />S-l <br /> <br />INTRODUCTION <br />1.1 Objective and General Authorization <br />1.2 Background <br />A. Rock Creek Project <br />B. Muddy Creek Project <br />C. References <br /> <br />1-1 <br />1-3 <br />1-3 <br />1-3 <br />1-4 <br /> <br />REGIONAL SEISMICITY EVALUATION <br /> <br />2-1 <br /> <br />ROCK CREEK DM1 AND RESERVOIR <br />3.1 Site Selection and Dam Type <br />A. Alternative Sites <br />B. Alternative Dam Types <br />C. Preliminary Comparative Costs <br />3.2 Reservoir <br />3.3 Geotechnical Investigations <br />A. Geologic r1apping <br />B. Initial Materials Investigations <br />C. Supplemental Materials Investigations <br />3.4 Flood Hydrology <br />3.5 Sedimentation <br /> <br />3-1 <br />3-1 <br />3-2 <br />3-5 <br />3-6 <br />3-7 <br />3-8 <br />3-9 <br />3-13 <br />3-14 <br />3-15 <br /> <br />i <br /> <br />6839W <br />