Cu behaviors and effects of mine drainage in Kosaka River, Hokuroku mining district, Northeast Japan

Qing Qing Lu, Takuto Kanetsuki, Shin Ichi Yamasaki, Ryoichi Yamada, Takahiro Watanabe, Noriyoshi Tsuchiya

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


Focusing on the origin of the heavy metal, this study aims to build an imputed method to estimate the heavy metal content in river water by making a distinction between the heavy metal of natural origins and that caused by human activities. Supported by GIS, Kosaka watershed within the Hokuroku basin was divided into several sub-watershed polygons and the outflows of water and Cu were calculated for each polygon. Compared with the natural origin, the dominant Cu emissions affected the river water more significantly in local. Based on the mass balance closure, the heavy metal content of Cu in the Kosaka River was estimated by the conflux accumulation of tributaries and mine drainages. The estimated Cu concentrations were checked by comparing with the actually measured values at monitoring points along the Kosaka River and the results are coincidence with each other in general. It is revealed that the mainstream water quality could be estimated by seizing the water quality of upstream tributaries and human drainages.

Original languageEnglish
Pages (from-to)1880-1889
Number of pages10
JournalTransactions of Nonferrous Metals Society of China (English Edition)
Issue number6
Publication statusPublished - 2014 Jan 1


  • Kosaka watershed
  • geographic information system (GIS)
  • heavy metal
  • mine drainage
  • river water

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Geotechnical Engineering and Engineering Geology
  • Metals and Alloys
  • Materials Chemistry


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