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2026 Vol.59, Issue 5 Preview Page
Characteristics of total sediment loads in the Nakdong-gang River, Geum-gang River, Yeongsan-gang River, and Seomjin-gang River

낙동강, 금강, 영산강, 섬진강의 총유사량 특성

Doeon Kima
,
Changsung Kimb
,
Hyoseop Wooc
,
Sung-Uk Choid*
김 도언a
,
김 창성b
,
우 효섭c
,
최 성욱d*
aGraduate Student, Department of Civil and Environmental Engineering, Yonsei University, Seoul, Korea
bSenior Researcher, Research & Development Division, Korea Institute of Hydrological Survey, Goyang, Korea
cVisiting Professor, Department of Civil and Environmental Engineering, Yonsei University, Seoul, Korea
dProfessor, Department of Civil and Environmental Engineering, Yonsei University, Seoul, Korea
a연세대학교 건설환경공학과 석사과정
b한국수자원조사기술원 연구개발실 선임연구원
c연세대학교 건설환경공학과 객원교수
d연세대학교 건설환경공학과 교수
*Corresponding Author
31 May 2026. pp. 445-458
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Abstract

Prediction of sediment load in rivers provides important information for river management, the safety of instream installations, and aquatic organism habitats. Global climate change increases floods in rivers, and sediment loads are also increasing significantly. This requires careful management in response to changes in the river environment. Meaningful measurement of the sediment load in rivers in Korea began in the 2000s by Hydrological Survey Center. However, studies on the analysis and evaluation of sediment load in rivers are rare. This study investigates the characteristics of sediment loads in four rivers in Korea, namely Nakdong-gang River, Geum-gang River, Yeongsan-gang River, and Seomjin-gang River. The analysis was conducted based on field data on discharge, sediment load, and bed sediment obtained by Hydrological Survey Center from 2007 to 2023. The annual changes in the distribution of bed sediment, median particle size, and sorting coefficient are examined. Based on measured sediment load data, annual sediment rating curves and an integrated sediment rating curve for the entire period are presented. Five commonly used total sediment load formulas are applied, and the most appropriate formula for each river is selected.

Keywords
Total sediment load
Bed sediment
Sediment transport
Sediment rating curve
Total sediment load formula

하천에서 유사량의 예측은 하천관리, 하천 시설물의 안전, 수생물 생태서식처 유지관리 등에 있어 매우 중요한 정보를 제공한다. 전 지구적인 기후변화로 하천에서 홍수량이 증가하고 있으며, 이에 따라 유사량도 크게 증가할 것으로 전망된다. 이와 같은 하천환경 변화에 따라 세심한 하천관리가 필요하다. 우리나라 주요 하천에서 유의미한 유사량의 측정은 2000년대에 들어와서 한국수자원조사기술원에 의해 시작되었다. 그러나 측정된 유사량 자료의 분석이나 예측에 대한 연구는 미흡한 실정이다. 본 연구에서는 우리나라의 낙동강, 금강, 영산강, 그리고 섬진강의 4개 하천의 주요 지점에서 총유사량의 특성을 검토하였다. 한국수자원조사기술원에서 2007–2023년 동안 현장에서 취득한 유량, 유사량, 그리고 하상토 자료에 근거하여 분석을 수행하였다. 하상토 분포, 중앙입경, 그리고 분급계수의 경년변화를 살펴보았다. 그리고 총유사량 실측자료를 기반으로 연도별 유량-총유사량 관계식을 제시하였으며 전체 실측기간에 걸친 통합 관계식도 제시하였다. 일반적으로 많이 사용되고 있는 5개의 총유사량 공식을 적용하여 각각의 하천에 적합한 공식을 제시하였다.

키워드
총유사량
하상토
유사이송
유량-총유사량 관계식
총유사량 공식
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Information
  • Publisher :KOREA WATER RESOURECES ASSOCIATION
  • Publisher(Ko) :한국수자원학회
  • Journal Title :Journal of Korea Water Resources Association
  • Journal Title(Ko) :한국수자원학회 논문집
  • Volume : 59
  • No :5
  • Pages :445-458
  • Received Date : 2025-12-05
  • Revised Date : 2026-02-06
  • Accepted Date : 2026-03-09
  • DOI :https://doi.org/10.3741/JKWRA.2026.59.5.445
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