Research Data on aggregation behaviours of trace metals and organic matter using river water samples collected from the Shira and Midori Rivers, Kumamoto, Japan, in January 2018
River waters were collected from the Shira and Midori Rivers, Kumamoto, Japan. The collected waster samples were sequenciaaly processed to examine aggregation behavious in freshwater and estuarine systems. Metal and TOC concentrations of the processed water samples were measured. In addition, size distributions of the particles contained in the samples were measured.