The height of the steps was almost the same as the grain size of bed materials and increased with channel slope. The step widths and step
wavelengths are almost the same size, and the step wavelength was decreased when the channel slope was increased. It was analyzed
that there was a clear correlation between channel width and step width, and the step width increases with channel width. In addition,
the step wavelength was scaled by channel width, and the step height is governed by the grain size of the rock forming the step, so that
the profile structure of the step-pool was changed according to the channel slope. the scale of the pool was found to be highly correlated
with the channel width, grain size, and slope gradient. Therefore, the characteristics of step-pool structure in mountain streams were
influenced by various factors, but it can be explained as the grain size, channel width and channel slope.