Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Spatial Water Quality Analysis of Main Stream of Nakdong River Considering the Inflow of Tributaries

유입지천을 고려한 낙동강 본류구간의 공간적 수질특성 분석

  • Kim, Sorae (Graduate School, Gyeongsang National University) ;
  • Kim, Sang Min (Department of Agricultural Engineering(Institute of Agriculture and Life Science), Gyeongsang National University)
  • 김소래 (경상대학교 대학원 농공학과) ;
  • 김상민 (경상대학교 지역환경기반공학과(농업생명과학연구원))
  • Received : 2017.05.22
  • Accepted : 2017.09.22
  • Published : 2017.11.30
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Abstract

The purpose of this study is the analysis of the water quality spatial characteristics for the main stream of Nakdong River in consideration of the tributary inflow. The flow and water quality (BOD, TOC, TP) data for 32 monitoring stations located in the main stream and the tributaries of Nakdong River were collected from 2003 to 2016. From the results of the flow and water quality analyses for each site, a status map of the flow and the water quality for Nakdong River was produced. The water quality of each river section was classified according to seven river-environment standards. The water quality changes in the main stream before and after the confluence were analyzed spatially. As a result, the water quality of Kumho River, in particular the Kumho B to Kumho C section, is the worst among the tributaries. In addition, the water quality grades of the lower streams such as Nam River and Miryang are worse than that of the upper streams of the Nakdong River. In the case of the main stream, the water quality grades of the sections between the Wicheon and Nam River confluences and the section from Nakbon L to Nakbon N are relatively poor.

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References

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