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<br />"" <br />o <br />C' <br />c. <br /> <br />CONTENTS <br /> <br />Page <br />Abstract----------------------------------------------------------------- 1 <br />Introduction-----------------------------------------------------------__ ~ <br />Purpose and scope--------------------------------------------------- 3 <br />Approach------------------------------------------------------------ 5 <br />Extension of streamflow records------------------------------------------ 5 <br />Extension of dissolved-solids records------------------------------------ 6 <br />Weighted regression------------------------------------------------- 8 <br />Regression on dissolved solids at a base-station site--------------- 10 <br />Results------------------------------------------------------------- 11 <br />Comparison of extended and historical records---------------------------- 11 <br />Summary------------------------------------------------------------------ 22 <br />References cited--------------------------------------------------------- 23 <br />Supplemental data-------------------------------------------------------- 24 <br /> <br />Figure 1. <br />2-19. <br /> <br />Map of <br />Plots <br />2. <br /> <br />12. <br /> <br />13. <br /> <br />FIGURES <br /> <br />3. <br /> <br />Page <br />the Colorado River basin and data-collection sites------ 2 <br />of extended and historical record of: <br />Flow-weighted monthly dissolved-solids concentration at <br />site 1, Colorado River near Glenwood Springs, Colo., <br />water years 1941-83----------------------------------- 13 <br />Monthly streamflow at site 5, Dolores River near Cisco, <br />Utah, water years 1941-83----------------------------- 13 <br />Flow-weighted monthly dissolved-solids concentration at <br />site 5, Dolores River near Cisco, Utah, water years <br />1941-83----------------------------------------------- 14 <br />Monthly streamflow at site 7, Green River near Green <br />River, Wyo., water years 1941-83---------------------- 14 <br />Flow-weighted monthly dissolved-solids concentration at <br />site 7, Green River near Green River, Wyo., water <br />years 1941-83----------------------------------------- 15 <br />Monthly streamflow at site 9, Green River near <br />Greendale, Utah, water years 1941-83------------------ 15 <br />Flow-weighted monthly dissolved-solids concentration at <br />site 9, Green River near Greendale, Utah, water years <br />1941-83----------------------------------------------- 16 <br />Flow-weighted monthly dissolved-solids concentration at <br />site 10, Yampa River near Maybell, Colo., water years <br />1941-83----------------------------------------------- 16 <br />Monthly streamflow at site 12, Duchesne River near <br />Randlett, Utah, water years 1941-83------------------- 17 <br />Flow-weighted monthly dissolved-solids concentration at <br />site 12, Duchesne River near Randlett, Utah, water <br />years 1941-83----------------------------------------- 17 <br />Flow-weighted monthly dissolved-solids concentration at <br />site 13, White River near Watson, Utah, water years <br />1941-83----------------------------------------------- 18 <br />Monthly streamflow at site 16, San Rafael River near <br />Green River, Utah, water years 1941-83---------------- 18 <br /> <br />4. <br /> <br />5. <br /> <br />6. <br /> <br />7. <br /> <br />8. <br /> <br />9. <br /> <br />10. <br /> <br />11. <br /> <br />iii <br /> <br /> <br /> <br />