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important gages in the Green River system have not been analyzed for trends in the relationship between sediment load and discharge. Butler (1988b) used existing data of USGS, Elliott et al. (1984), and 0' Brien (1984) from Deerlodge Park and Mathers Hole to prepare a sediment budget to predict flow hydrographs for sediment transport equilibrium conditions in this reach of the Yampa River. This effort was an extension of the work performed by USGS (1984) and used the total sediment load to evaluate potential impacts of reduced streamflows. He assumed that the difference between predicted daily sediment loads at Deerlodge Park and Mathers Hole represented a surplus or deficit in this reach. The sediment budget program applied a synthesized record derived from the Maybell and Lily gages daily discharges for the period from 1941 to 1986. A Yampa River water project flow depletion analysis was developed for the Nature Conservancy by Wheeler (1987). Butler applied this analysis as a possible worst case scenario for Yampa River flow depletions. Butler (1988b) used the results of this study to indicate that if the timing or magnitude of the peak flows at Deerlodge Park are significantly altered then the sediment distribution in the system would be effected. He showed that regulating flows of the Yampa River upstream of the Little Snake River without diminishing the Little Snake River sediment load would cause aggradation in the Deerlodge Park reach. He also used the analysis to demonstrate that a sediment transport balance can be achieved at various combinations of annual water yield and sediment load, but qualified his conclusion stating that the new sediment balance would be accompanied by channel adjustments. There are several important aspects of Butler's study that should be highlighted. First, he established a basis for identifying low, average and high flow years. These flow delineations were computed using a log-Pearson Type III 39