Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
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Spatial Analysis of BOD Data in Namgang-Dam Watershed for TMDLs

오염총량관리를 위한 남강댐유역 BOD 자료의 공간특성 분석

  • 김상민 (경상대학교 지역환경기반공학과 (경상대학교 농업생명과학연구원)) ;
  • 김성민 (경상대학교 지역환경기반공학과 (경상대학교 농업생명과학연구원)) ;
  • 박태양 (경상대학교 지역환경기반공학과 (경상대학교 농업생명과학연구원))
  • Received : 2010.04.15
  • Accepted : 2010.05.18
  • Published : 2010.05.31
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Abstract

The purpose of this study is to analyze the spatial characteristics of Namgang-Dam watershed for a Total Maximum Daily Loads (TMDL). Three TMDL target sites, Gyeonghogang1, 2, Namgang-Dam2, are located within Namgang-Dam watershed. Under the current criterion for TMDLs, 3-year arithmetic mean BOD concentration of the target sites should not exceed the target concentration for 2 consecutive years. Two and three times of violation were observed for Gyenghogang2 and Namgang-Dam2 sites while no violation was found for Gyeonghogang1 site. However, no violation was found since 1999 for all three sites. Correlation between each 12 stations within the watershed were analyzed and cluster analysis was conducted to figure out the spatial characteristics of the watershed. Correlation coefficient between Gyonghogang1 and 2 was high (0.758) while the coefficients between lake station (Namgang-Dam2) and stream stations (Gyonghogang1 and 2) were very low. Dendrogram indicated that all of three Namgang-Dam stations were very close and Gyenghogang1, 2 stations were also close.

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