2022 Volume 78 Issue 2 Pages I_487-I_492
We have insisted that the method for evaluating the goodness-of-fit of the probability distribution in the “Guide for River Plan Design for Small and Medium-sized Rivers” must be modified because of several important shortcomings. Although we regard our insistence as valid from an academic perspective, we can understand the difficulty of analysts in government agencies in changing their methods quickly from the perspective of policy continuity. Therefore, we show some issues related to the conventional method, which they seem to prefer. Especially, this report describes some considerations related to evaluating the SLSC of the three-parameter probability distribution and Etoh’s distribution. Finally, we present guidelines for analysts, in which our reports are aggregated.