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<br />. 'Air entrainment in flow <br />. Splash heights <br />. Hydraulic jump characteristics <br />. Stilling basin dimensions and <br />floor pressures <br /> <br />The model was operated at scaled <br />spillway flows for flood recurrence in- <br />tervals from 1 to 500 years. These <br />modeling efforts were used to evaluate <br />optimum step size, stilling basin <br />length and depth, training wall <br />heights, and details of the transition <br />from the Ogee crest to the steps. As <br />a result, the stilling basin size was <br />reduced by about 50 percent. <br /> <br />100 <br /> <br />80 <br /> <br /> <br />---;-. ". -- ..~,..,..,......_._,". --' <br /> <br />..:. <br />.~.: .....- ~""""'",,,.~-~. .....-.r-- <br />- - - . . ~ - - <br /> <br />_l.. <br />". <br /> <br />',. .::-. '~:.'-';' - <br /> <br />- <br />o <br />.... <br />~ <br />u. <br />- <br /> <br />'FT STEP <br /> <br />> <br />~ 60 <br />o <br />o <br />-' <br />w <br />> <br /> <br />~ 40 <br />z <br />~ <br />a: <br />w <br />~ <br /> <br />20 <br /> <br /> <br />o <br />o <br /> <br />30 <br />(CFS/FT) <br />TION <br /> <br />40 <br /> <br />10 20 <br />UNIT DISCHARGE <br />SPILLWAY ENERGY <br /> <br /> <br />To enhance the downstream fishery <br />in the Yampa River, the project in- <br />cludes a multi-level intake tower that <br />pulls water from various depths in the <br />reservoir. A computer model of the <br />reservoir temperatures at different <br />depths was developed to optimize the <br />intake gate locations. <br /> <br />o <br />7200 <br /> <br />5 <br /> <br />WATER TEMPERATURE DATE <br />10 15 <br /> <br />20 <br /> <br />25 <br /> <br />z <br />Q <br />~ <br />;g; <br />W <br />...J <br />W <br /> <br /> <br />7100 <br /> <br />RESERVOIR THERMAL MODEL <br />