Human Impact on the Water Quality of the Tokoro River in Hokkaido,Japan(2).

Abstract

Since the research on the Tokoro River so far has focused on the mainstream water quality survey, in this research, the temperature, water temperature, EC, etc. were surveyed at 22 points for one year from September 2020 to August 2021. BOD, pH, and RpH were investigated in the field, and TOC, analysis of major dissolved components, and alkalinity measurement were performed in the university laboratory. As a result, the correlation between EC and TOC was high, and both values were high especially at the observation points around Kitami City. It turned out to have a great influence on.