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<br /> <br /><-.', ,'-..-. '--""-" <br /> <br /> <br />6 <br /> <br />residual mass diagram is shown on Figure 7. <br /> <br />o <br />w <br />..J <br />CP <br /> <br />The residual mass diagram indicates an increase in <br /> <br />after 1962. However, a statistical analysis similar to that <br /> <br />performed for Colorado River near Cisco indicated that the mean <br /> <br />of residuals for the periods prior to and after 1962 are not <br /> <br />significantly different at the 90 percent level of significance. .. <br /> <br />Therefore, it was assumed that a change in relationship has not <br /> <br />occurred. Figure 8 shows the regression line for the entire, <br /> <br />1941 through 1976, period of record as well as the regression <br /> <br />line for the period after 1962. As can be seen, there is little <br /> <br />difference between the two regression lines. <br /> <br />San Rafael River Near Green River, Utah <br /> <br />The S@n Rafael River contributes only one percent of the <br /> <br />water and two percent of the salt load to the total, 1976 <br /> <br />modified, gaged inflow to Lake Powell. Because the river's <br /> <br />contribution to the total inflow is relatively very small, only <br /> <br />a brief ffi1alysis of the salt-load versus flow relationship was <br />