Laserfiche WebLink
<br />~ <br /> <br />OD.)750 <br /> <br />8 <br /> <br />-5- <br /> <br />II <br /> <br />METEOROLOOlCAL S'1f~~:'."._" ":' <br /> <br />~"'.!... ~,.! -- ~ <br /> <br />," .... <br /> <br />1. Proposal to Conduct Studies of Precipitation Frequency <br />in the Colorado River Basin of Colorado and other <br />upper Basin States. <br /> <br />In the orderly development of expanded uses of water in the <br />State of Colorado and for all the sUlToundi:og states joined together <br />to make up the UpparDi vision ~f the Colorado River System, it be- <br />comes increasingly important that careful analyses be made of all <br />existing data which pertain to the water which flows into and is <br />diverted trom the Colorado River. <br /> <br />In addition to the rather'ElIitteneive strea:mflow data, there <br />have been compiled dUring the past 70 years a rather sizable quantity <br />of precipitation data. These, for the most part, have lain dormant. <br />Up to the present time the planning decisions relatiVe to expected <br />flow of the Colorado River have been based almost EIlCc1usively on <br />streamflow inf'ormat~on. It is a fUndamental fact, however, that the <br />occurrence of preoipitation always precedes the collection of streem- <br />now in alV river. This certainly :lJnp:Lies that a thorough under- <br />standing of the precipitation frequem!.e and their probability of <br />occurrence should be studied in order to gain a more complete under- <br />standing of lIhat may be. expected in the way_of subsequent streamflow <br />in the .Colorado River. <br /> <br />GeneralJ..y Sp"",ldT\g, precipitation records used to date <br />have consisted primarily of an arithmetic average of wJ:iatever period <br />of record was available. Even with the use of only elementary <br />statistical treatment it is possible to gain considerably more <br />information trem a series of precipitation records than this one <br />Single (and of'ten m.isleadi:og) piece of information. <br />o <br />The following proposal of effort to be carried out on this <br />general problem is divided into three separate steps, and further is <br />divided into whet could be conducted with data totall,y within the <br />State of Colorado, and a somewhat further expansion of this into <br />pertinent data fram the add! tional Upper Colorado Basin States of <br />Wyamihg, New Mexico and Utah. "While Arizona has same watershed <br />areas contributi:og to the flow of tJae Upper Colorado Basin, the <br />quantities contributed from this are rather negligible in an anal,ysis <br />of the entire now of the Upper Colorado Basin. <br />