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<br />N <br />o <br />f--" <br />o <br /> <br />Table 1.--sites for which monthly data are tabulated in biennial <br />reports on quality of water in the Colorado River basin <br /> <br />Site <br />number <br />in fig- <br />ure 1 <br /> <br />U.S. Geo- <br />logical <br />Survey <br />station <br />number <br /> <br />Station name <br /> <br />7 <br />9 <br />10 <br />12 <br />13 <br /> <br />14 <br />16 <br />17 <br />18 <br />19 <br /> <br />20 <br />21 <br />22 <br />23 <br />24 <br /> <br />1 <br />2 <br />3 <br />5 <br />6 <br /> <br />09071100 <br />09095500 <br />09152500 <br />09180000 <br />09180500 <br /> <br />Colorado River near Glenwood Springs, Colo. <br />Colorado River near Cameo, Colo. <br />Gunnison River near Grand Junction, Colo. <br />Dolores River near Cisco, Utah <br />Colorado River near Cisco, Utah <br /> <br />Green River near Green River, Wyo. <br />Green River near Greendale, Utah <br />Yampa River near Maybell, Colo. <br />Duchesne River near Randlett, Utah <br />White River near Watson, Utah <br /> <br />Green River at Green River, Utah <br />San Rafael River near Green River, Utah <br />San Juan River near Archuleta, N. Mex. <br />San Juan River near Bluff, Utah <br />Colorado River at Lees Ferry, Ariz. <br /> <br />Colorado River near Grand Canyon, Ariz. <br />Virgin River at Littlefield, Ariz. <br />Colorado River below Hoover Dam, Ariz.-Nev. <br />Colorado River below Parker Dam, Ariz.-Calif. <br />Colorado River above Imperial Dam, <br />Ariz. -Calif. <br /> <br />09217000 <br />09234500 <br />09251000 <br />09302000 <br />09306500 <br /> <br />09315000 <br />09328500 <br />09355500 <br />09379500 <br />09380000 <br /> <br />09402500 <br />09415000 <br />09421500 <br />09427520 <br />09429490 <br /> <br />Historical <br />period of <br />record1 <br />(water <br />years) <br /> <br />1942-83 <br />1934-83 <br />1932-83 <br />1951-83 <br />1929-83 <br /> <br />1952-83 <br />1957-83 <br />1951-83 <br />1957-83 <br />1951-83 <br /> <br />1929-83 <br />1947-83 <br />1955-83 <br />1928-83 <br />1926-31, <br />1942-83 <br /> <br />1935-83 <br />1949-83 <br />1935-83 <br />1964-83 <br />1943-83 <br /> <br />lConcurrent period of monthly streamflow and dissolved-solids <br />concentration computed using the method developed by Liebermann and others <br />(1987). Water year is defined as the period from October 1 through September <br />30 and is designated by the calendar year in which it ends. <br /> <br />Purpose and Scope <br /> <br />The purpose of this report is to provide documented estimates of stream- <br />flow and dissolved-solids concentration for 13 sites that have incomplete <br />records. The first objective is to describe techniques for extending the <br />records at individual sites. Techniques based on statistical relations <br />between hydrological variables, such as streamflow and dissolved-solids <br />concentration, either at a single site or between sites were acceptable. The <br />second objective is to describe the techniques used to extend the monthly <br />records of streamflow and dissolved solids from October 1940 through the <br /> <br />3 <br /> <br /> <br />, , <br />." . :'^'i;,"_~~.'~- < <br />