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Elliott (1984) detected no obvious nonlinear trends in his data collected at Deerlodge Park, which is an alluvial reach, and not a gravel bed reach. He also reported the majority of material composing the streambed (d50=.61 mm) is of a size capable of being transported at the lowest flows. The individual measurements collected by O'Brien at Mathers Hole were unavailable to evaluate whether this alternate power curve would provide a better estimation of sediment load. For these reasons, and a lack of additional time, the method presented by Ferguson was utilized. Milhous agreed that any revised rating curves could be used within the program later and the best option would be to use the correction presented by Ferguson. O'Brien (1987) used the method discussed by Ferguson to correct the rating curves presented in his earlier report (1984). However, the only correction presented was for the suspended sediment curve, which was used in his suspended sediment budget study. None of the earlier reports presented the data collected, so it was impossible to correct the other curves for bias directly. Much of O'Brien's original data is in a closet in Fort Collins and unavailable at the moment. One possible recommendation is that for any Service study, a record of all field notes and data collected should be part of the final submittal. Since the actual values were unavailable to obtain the variance at Mathers Hole, the variance of the Deerlodge Park total sediment relation was used to correct the Mathers Hole relationship. It is probable that the variance at Mathers Hole is greater than at Deerlodge Park, due to the Mathers Hole reach being armoured and sediment supply limited. The curves used within the sediment budget program are: Uncorrected Deerlodge Park Total Sediment = .292*Q1.258 Corrected Deerlodge Park Total Sediment = .351*Q1.258 Uncorrected Mathers Hole Total Sediment = .0742*Q1.421 Corrected Mathers Hole Total Sediment = .0894*Q1.421 Bed material rating curves are more appropriate to examine the effects of changing flow regimes on the cobble substrate of the spawning areas in Yampa Canyon. The rating curves prepared by Elliott and O'Brien for different size fractions are not directly comparable and without the actual Mathers Hole data only approximations can be used. This problem plus the same problems regarding bias correction resulted in the use of uncorrected curves. The runs made with bed material sizes used the sand/gravel curve at Deerlodge Park, compared to the sum of the Helly-Smith bed load sampler and estimated unmeasured sand load at Mathers Hole.