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<br />Table IV. Historical Sediment Data
<br /> Yampa, Maybell Little Snake, Lilly
<br />Water Sediment Annual Sediment
<br />Year Discharge Load Discharge Load
<br /> (acre-feet) (tons/year) (acre-feet) (tons/year)
<br />1952 1,447,177 547,740 727,828
<br />1953 829,208 247,886 268,721
<br />1954 522,182 125,025 178,256
<br />1955 772,587 401,893 233,164
<br />1956 1,033,298 397,647 410,900
<br />1957 1,781,336 607,486 507,000
<br />1958 882,840 511,717 425,000
<br />1960 1,010,000 300,301 931,650
<br />1961 629,300 162,779 438,142
<br />1962 111492,000 569,128 3,156,957
<br />1963 630,200 203,601 9583,285
<br />1964 865,200 318,014 1,221,563
<br />1976 826,300 246,508 3829400
<br />1978 731,628 500,450 507,000
<br />1979 660,582 232,540 417,500
<br />1980 645,121 651,042 557,400
<br />1981 279,388 187,247 248,300
<br />1982 692,174 618,903 570,100
<br />Average 407,237 1,341,319
<br />Table V. Load Duration Analysis
<br /> Annual Load
<br /> (million tons/year)
<br />1. Historical combined gaging stations, Maybell and Lilly 1.21
<br />2. Same as #1 using seasonal analysis 1.20
<br />3. USGS, measurements at Deerlodge
<br /> a. Suspended Load 1.94
<br /> b. Sand Load 0.79
<br /> C. Total Load (includ ing bedload) 2.04
<br />4. Mathers Hole Data (1983 )
<br /> a. Fine Load (<0.0625 mm) 1.22
<br /> b. Sand Load 0.97
<br /> C. Helley-Smith Load 0.0062
<br /> d. Unmeasured Sands 0.038
<br /> e. Suspended Load 2.13
<br /> f. Total Load 2.16
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