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<br /> <br />002517 <br /> <br />Table 1.--Summary of daily streamflow and sediment data for selected stream- <br />gaging stations in the Yampa River basin, Colorado and Wyoming--Contlnued <br /> <br />Site <br />number <br />on fir <br />ure 1 <br /> <br />43 <br /> <br />47 <br /> <br />48 <br /> <br />58 <br /> <br />59 <br /> <br />64 <br /> <br />Sediment-load records <br /> <br />U.S. Geolog- <br />ical Survey <br />station <br />number <br /> <br />Period of <br />streamflow <br />records <br />(water <br />years) <br /> <br />Fre- <br />quency <br /> <br />Source <br />of <br />data2 <br /> <br />ISlte-designation codes used by Steele, Bauer, Wentz, and Warner (1978). <br />2Sources; A, U.S. Geological Survey (1950-63); B, U.S. Geological Survey <br />(1976-77); C, lorns, Hembree, Phoenix, and Oakland (1964); and D, U.S. Geo- <br />logical Survey (1972-76). <br />3Streamflow records were collected at 092~9500, and sediment concentra- <br />tions were collected at 09249750. <br />4Published record 1966-71 water years for 09244400 and 1970 to the pres- <br />ent for 09244410. <br /> <br />Per i od <br />of <br />record <br />(month/ <br />year) <br /> <br />Station <br />name <br /> <br />09245000 Elkhead Creek near 1954-77 10/7 5- I nter- <br /> Elkhead, CO. 9/77 mittent <br />09244410 Yampa River below 1966-77 10/75- --do--- <br />4(09244400) diversion, near 9/77 <br /> Hayden, CO. <br />09244300 Grassy Creek near 1959-66 10/75- --do--. <br /> Mount Harris, CO. 9/77 <br />09242500 Elk River near 1905-6, 10/75- --do--- <br /> Trull, CO. 1910-27 9/77 <br />09241000 Elk River at Clark, 1911-22, 10/75- --do-.- <br /> CO. 1931-77 9/77 <br />09239500 Yampa River at 1905-6, 7/58- --do--- <br /> Steamboat Springs, 1910-77 8/58 <br /> CO. 10/25- <br /> 9/77 <br /> <br />two subbasins (fig. 1). In addition to these two gaging stations with <br />relatively long periods of measured daily sediment loads, daily sediment <br />measurements for periods as long as several weeks, as well as intermittent <br />Instantaneous measurements, have been made at several other gaging stations <br />throughout the Yampa River basin (fig. 1). The frequency and period of <br />record of these measurements are noted in table 1. Several gaging stations <br />have different periods of streamflow record. Suspended-sediment samples were <br />collected Intermittently at most of the active gaging stations during the <br />1976 and 1977 water years as part of the Yampa River Basin Assessment. In <br />addition, suspended-sediment samples were collected Intermittently at several <br />gaging stations prior to 1960 by the U.S. Bureau of Reclamation (Iorns and <br /> <br />6 <br /> <br />B <br /> <br />B <br /> <br />B <br /> <br />B <br /> <br />B <br /> <br />C <br /> <br />B <br />