Shape of natural and manually crushed particles collected from a headwater stream in Tsugaru, Japan.

.csv files contain data of particle shape (Wadell's roundness, circularity, aspect ratio) and sampling location. Distance shown in the dataset is measured from the downstream end of the studied river section.Summary…xlsx contains summary stats of particle shape for each sampling sites.IndividualHistogram.docx includes figures showing histogram of particle roundness and circularity at each sampling points. Each panel contain histograms of two adjacent sites used to produce the differential histograms in “DifferentialHistogram.docx”.DifferentialHistogram.docx includes figures showing downstream changes in histogram of particle roundness and circularity.PercentileValues.docx includes figures showing the 16^th, 50^th, and 84^th percentile values of roundness and isoperimetric ratio obtained at each sampling point.