In this study, heavy metal levels at the sediment monitoring network site upstream of the Gangjeong-Goryeong weir in the Nakdong River were surveyed from 2012 to 2016. We assessed the sediment pollution level using various pollution indexes based on ICP-MS analysis. The stream sediment pollution assessment standard, established through Regulation No. 687 of the National Institute of Environmental Research (2015), pollution load index (PLI), potential ecological risk index (RI), and mean PEL Quotient (mPELQ) were used to evaluate the sediment pollution level. We verified the representativeness of the monitoring point through the distribution of sedimentation and scour behavior by river bed surveying using anacousticDopplercurrentprofiler.

Abstract
 1. 서 론
 2. 재료 및 방법
  2.1. 대상유역
  2.2. 퇴적물 오염도 평가
  2.3. 퇴적물 공간적 분포
 3. 결과 및 고찰
  3.1. 퇴적물 오염도 평가 결과
  3.2. 퇴적물 공간적 분포 결과
 4. 결 론
 REFERENCES

• 안정민(국립환경과학원 낙동강물환경연구소) | Jung Min Ahn (National Institute of Environmental Research, Nakdong River Environment Research Cente)
• 임태효(국립환경과학원 낙동강물환경연구소) | Teo Hyo Im (National Institute of Environmental Research, Nakdong River Environment Research Cente)
• 김성민(국립환경과학원 낙동강물환경연구소) | Sungmin Kim (National Institute of Environmental Research, Nakdong River Environment Research Cente)
• 이상수(국립환경과학원 낙동강물환경연구소) | Sangsu Lee (National Institute of Environmental Research, Nakdong River Environment Research Cente)
• 김 신(국립환경과학원 낙동강물환경연구소) | Shin Kim (National Institute of Environmental Research, Nakdong River Environment Research Cente)
• 이권철(국립환경과학원 낙동강물환경연구소) | Kwon Cheol Lee (National Institute of Environmental Research, Nakdong River Environment Research Cente)
• 김용석(국립환경과학원 낙동강물환경연구소) | Yong Seok Kim (National Institute of Environmental Research, Nakdong River Environment Research Cente)
• 양득성(국립환경과학원 낙동강물환경연구소) | Deuk Seok Yang (National Institute of Environmental Research, Nakdong River Environment Research Cente) Corresponding author