Show Dye aye study to o be made on White River Riper A dye study of the White WhiteRiver WhiteRiver WhiteRiver River in Utah will be made about September 1 by the U U. U S. S Geological Survey The purpose of the dye study is to determine the time of travel and the dispersion coefficient for Cor the White River This information will be used to model the river system at a later date A CALCULATED amount of WT 20 percent dye will be injected at the Utah and Colorado border and below the bridge across the White River near Bonanza Its It's concentration con ton concentration and time of travel will be determined at various points between the injection sites and the confluence of the White and Green Rivers near Ouray The concentration of dye will be calculated so as not notto notto notto to exceed five parts per billion at any diversions along this reach WT is a red dye that is harmless to people fish and plants when used in small concentrations such as are planned for this study The The Thedy dye will not be visible throughout the entire study reach but willbe will willbe willbe be noticeable for a few miles below the injection points WHEN WilEN TilE THE dye is first poured river lt be bright red then it will gradually fade to a dull crimson then to pink and it will seem to disappear completely by the time it has traveled a few miles below the injection sites The dye is and will be sampled by an in instrument instrument strument called a The is so sensitive that it can record less than one part of dye in one billion parts of water The red-dye red technique has been used by the Geological Survey in recent years to ga gather ther important hydrological data on parts of many U. U US S. S rivers |