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<br />CONTENTS <br /> <br />Page <br /> <br />Introduction . . . . . . . . . . . . . . . , , _ . . . . . . . . . , , . _ . . . . . . . . . . . . . . . . . . . . . . . . . 1 <br /> <br />Conclusions and recommendations ....................................... 1 <br /> <br />The model . . . . , . . . . . . . . . . . . . . . . . . . . . , . . . . . . . , , , . . . . . . . , . . . . . . . . , . . . 2 <br />Description . _ . . . . . . . . . . . . . . . . . . . . . . . . . . . . _ _ . . . . . . . . . . . . . . . . . . . . . 2 <br />Model measurements and instrumentation. . . . . . . . . _ . . . . . . . . . . . . . . . . . . . . 2 <br />Hydraulic similitude ...............,.............................. 3 <br /> <br />Sediment scaling . . . . . . . , , , . . . . . . , , . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . 4 <br /> <br />Model results and analysis .........................,.......,........... 5 <br /> <br />Model calibration ..,..........................."................ 5 <br />Calibration of dam, radial gate, and intake . . , . . . . . . . . _ . . . . . . . . . . . . . . . 6 <br />Study of boating conditions . . . . . . . . . . . . . . . . . . . . _ . . . . . . . . . . . . . . . . . . . . 6 <br />Final boatchute configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 <br /> <br />Flow patterns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 <br />Sediment studies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 <br />Sluicing flows. . . . . . , , . . . . . . . . . , . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . 10 <br />Approach flow to Englewood intake . . . . . . . . . . . . . . . . . . . . , , . . . . . . . . . . 10 <br /> <br />Sediment tests . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . , , . . . . , . . 11 <br />Floodflows .................................... _ . . . . . . . . . . . . . . . . 12 <br />Flow over the main crest ........................................ 12 <br />Lowering the sluice wall . . . . . . . . . . . . . . . . , . . . . . . , . . . . . . . . . . . . . . . . . 13 <br />Riprap and channel stability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 <br /> <br />Bibliography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . 13 <br /> <br />TABLES <br /> <br />Table <br /> <br />1 <br /> <br />Average monthly South Platte riverflows at Littleton, Colorado, <br />and average Englewood diversions . . . . . . . . . . . . . . . . . . . . . . . , . . . . . <br />Velocity comparison in front of primary Englewood water intake <br />with high and low walls . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . , . . . . . <br />Water surface elevations from Union Avenue bridge to the pool <br />downstream of boatchute 2 .'................. . , . . . . . . . . . . , , . <br /> <br />15 <br /> <br />2 <br /> <br />15 <br /> <br />3 <br /> <br />16 <br /> <br />iii <br />