Application of the logarithmic and stage discharge equation methods for rating curve extension / A.G. Smith. : En37-529/1988E-PDF

"Two methods of rating curve extension - the logarithmic and stage-discharge equation (as developed by Dr. B.P. Sangal) - have been applied to eleven rating curves from ten streams gauging stations in the Pacific and Yukon Region. The data from these stations was readily available from previous studies. The results are comparable, within 10 percent, for six rating curve extensions and of the remaining four the logarithmic method provides a better fit in two. One rating curve was not sufficiently defined for the reliable application of either method. This is not to be considered as a definitive study with so small a sample of rating curves. The recommendation of this study is to apply both methods and then select the one that gives the best results"--Summary, page i.

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