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<br />K ~ routing constant, compute as: <br /> <br />K ~ t <br />2 Ts + t <br /> <br />5. Solving the equation for O2 gives an instantaneous discharge <br /> <br />value at the end of the incremental time interval designated by <br /> <br />12, If II' 12, etc.., are designated by time at the head of a <br /> <br /> <br />reach, the time of occurrence of O2 at the bottom of the reach is <br /> <br /> <br />obtained by adding the translation time component, Tr' to the time <br /> <br />of respective 12, <br /> <br />The modified PuIs method of streamflow routing was used in the 1948 <br /> <br />IDF $tudy for Narrows damsite. The modified Wilson method was <br /> <br />selected for use in this study after trial routings of 1948 1DF data <br /> <br />by this method gave results comparable to the 1948 results, These <br /> <br /> <br />trial routings, along With some trial routings of the June 1965 <br /> <br /> <br />flood on the South Platte River downstream from Littleton, provided <br /> <br />information for the stream routing criteria used in this study. <br /> <br />The diagram on Plat.e.:J,.,O, main text, shows the mountainous subareas <br /> <br />. for which it. was necessary to stream route the computed flood hydro- <br /> <br />graphs to the South Platte River. Table'A=&, attached, lists the <br /> <br />criteria which were used. A time increment, t, of l..hour was used <br /> <br />for all routing computations. <br /> <br />21 <br /> <br />,,- _....... ._..~." <br /> <br />L . ..... _~. ....... <br /> <br />.'-... <br /> <br />, ..~. ._.......,;.;....:~'c.. ..~~~., <br /> <br />.,__ ~:'o'... <br /> <br />. ....... <br /> <br />..---~ <br /> <br />.. <br />