Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Water Quality Management Planning for the Lake Sapgyo by Stream Grading Method

하천등급화 모델을 이용한 삽교호 수질관리 방안에 관한 연구

  • Choi, Jeongho (Water Envirornment Research Center, Chungnam Institute) ;
  • Kim, Hongsu (Water Envirornment Research Center, Chungnam Institute) ;
  • Cho, Byunguk (Water Envirornment Research Center, Chungnam Institute) ;
  • Park, Sanghyun (Water Envirornment Research Center, Chungnam Institute) ;
  • Lee, Mukyu (Water Envirornment Research Center, Chungnam Institute)
  • 최정호 (충남연구원 물환경연구센터) ;
  • 김홍수 (충남연구원 물환경연구센터) ;
  • 조병욱 (충남연구원 물환경연구센터) ;
  • 박상현 (충남연구원 물환경연구센터) ;
  • 이무규 (충남연구원 물환경연구센터)
  • Received : 2020.01.21
  • Accepted : 2020.04.23
  • Published : 2020.05.30
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Abstract

Water quality improvement projects are being implemented without predicting the effect of water quality improvement on Lake Sapgyo. As the method of selecting the target stream for the effective conduct of water quality improvement projects the method of rating the streams were studied. To build a stream grading method, 60 major streams in the Lake Sapgyo system were monitored. The selection method of rivers subject to priority management for water quality improvement was applied to the stream grading method using the Analytic Hierarchy Process (AHP). The analysis of importance by site by stream grading method revealed the following: water quality (36.0%), flow (26.1%), travel load (13.4%), TMDL density (12.0%), TMDL (8.9%), and area (3.7%). The pollution level of the river was scored by using the stream grading method, and the ranking of 51 streams was calculated. Based on this, the group was classified into six grades (A-F). Among the groups, the F and E groups were selected as the priority management streams. Cheonan-Cheon (Cheonan City) was selected as the first stream to establish water quality improvement measures in the Lake Sapgyo system, and Seowoo-Cheon (Dangjin City) was selected as the second site, and Oncheon-Cheon (Asan City) was selected as the third site. Each local government is expected to improve the water quality improvement effect with limited resources when establishing and implementing water quality improvement measures for the streams (F group, E group) to be managed in this study.

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References

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