Flow Rate·Water Quality Characteristics of Tributaries and a Grouping Method for Tributary Management in Nakdong River

낙동강 지류·지천의 유량·수질 특성 및 하천관리를 위한 등급화 방안 연구

Na, Seungmin;Lim, Tae Hyen;Lee, Jae Yun;Kwon, Heongak;Cheon, Se Uk

  • Received : 2015.08.24
  • Accepted : 2015.10.19
  • Published : 2015.11.30


In this study, the major 38 tributaries in Nakdong River were monitored for flow rate and water quality in order to understand the characteristics of the watershed and to find improvement plan. The flow rate and water quality for each target tributary were evaluated based on the monitoring data in 2013~2014 using a statistical package SPSS-22.0. In addition, the tributary grouping method was conducted using a $BOD_5$ concentration/flowrate and TP concentration/flowrate monitoring data. The average values of $BOD_5$, $COD_{Mn}$, TP and TOC concentrations in Gumicheon, Gyeonghocheon, Jincheoncheon, Gisegokcheon, Yonghacheon and Yonghocheon located at Nakdong Waegwan and Nakdong Goryung watershed were high and in the grade of III or IV (5~8 mg/L). The Pearson correlation coefficients of TOC with $BOD_5$, $COD_{Mn}$, and TP were greater (r=0.8, p<0.01) than those of the other water quality parameters (12 species). The tributaries with high values of water quality parameters ($BOD_5$ > 3.0 mg/L, TP > 0.1 mg/L) and flowrate (Q > $0.1m^3/sec$) were selected for improving water quality according to the stream grouping method. Five tributaries (Gumicheon, Gisegokcheon, Yonghacheon, Yeongsancheon, Mijeoncheon and Yonghocheon) were classified as Group I, which require polices and plans for water quality improvement.


Flow Rate;Pearson correlation coefficient;Tributary;Tributary Grouping Method;Water Quality


  1. Lim, BS, Cho, BW, Kim YI, Kim, DY, (2010). Application of priority order selection technique for water quality improvement in stream watershed by relationship of flow and water quality, J. of Korean Society of Environmental Engineers, 32(8), pp. 802-808. [Korean Literature]
  2. National Institute of Environmental Research (NIER), (2014). Technical Guidelines for TMDLs, 11-1480523-001918-01, National Institute of Environmental Research. [Korean Literature]
  3. National Environmental Policy Act, Framework Act on Environmental Policy (2013) [Korean Literature]
  4. Park, SH, Moon, EH, Choi, JH, Cho, BW, Kim, HS, Jeong, WH, Yi, SJ, Kim, YI, (2011). Analysis of Distribution Characteristics of flowrate and water quality in tributary at Chungcheongnam-do, J. of Korean Society of Environmental Engineers, 33(10), pp. 739-747. [Korean Literature]
  5. Park, JW, Moon, MJ, Kim, KS, (2014). Analysis of relationship between water quality parameters with land use in Yeongsan river basin, J. of Environmental Impact Assessment, 23(1), pp. 19-27. [Korean Literature]
  6. Bae, MS, (2009). Improvement of total-maximum-daily-load policy in Lorea (Equlity of water quality standard and management of development), 09-07, Chungbuk Research Institute, [Korean Literature]
  7. Cho, BW, Choi, JH, Yi, SJ, Kim, YI, (2012). Selection priority of tributary catchments for improving water quality using stream grouping method, J. of Korean Society on Water Environment, 28(1), pp. 18-25. [Korean Literature]
  8. Choi, DH, Jung, JW, Yoon, KS, Lee, KS, Choi, WJ, Lim, SS, Park, HN, Yim, BJ, Hwang, TH, (2012). Estimation of TOC concentration using BOD, COD in runoff from paddy fields, J. of Korean Society on Water Environment, 28(6), pp. 813-818. [Korean Literature]
  9. Jung, SJ, Kim, KS, Seo, DJ, Kim, JH, Lim, BJ, (2013). Evaluation of Water Quality Characterisitics and Grade Classification of Yeongsan River Tributaries, J. of Korean Society on Water Environment, 29(4), pp. 504-513. [Korean Literature]
  10. Kim, HS, Hong, JJ, Seong, JU, Choi, KS, Park, JC, (2013). Comparison of organic matter distribution in major tributaries of the Nakdong River, J. of Korean Society on Water Environment, 29(5), pp. 618-624. [Korean Literature]
  11. Kim, SJ, (2012). Temporal and spatial evaluation of water pollution loads of the tributaries in Gohyeon stream watershed, J of Wetlands Research, 14(4), pp. 607-628. [Korean Literature]
  12. Kim, YL, Jeong, WH, Kim HS, Yi, SJ, (2012). Use of Tributary Water Quality and Flowrate Monitoring Data for Effective Implementation of TMDL, J. of Korean Society of Environmental Engineers, 34(2), pp. 119-125. [Korean Literature]
  13. Kim, YL, Yi, SJ, (2011). Improvement of Procedures for Reasonable Implementation of TMDL, J. of Korean Society of Environmental Engineers, 33(8), pp. 617-622. [Korean Literature]
  14. Lee, SH, Hwang, JJ, (2012). Application of grouping method to select priority restoration streams in Geumgang watershed based on analysis of pollution factors, J. of Korean Society of water and wastwwater, 27(5), pp. 661-669. [Korean Literature]

Cited by

  1. A Study on Seasonal Pollutant Distribution Characteristics of Contaminated Tributaries in Nakdong River Basin vol.18, pp.3, 2016,
  2. Analysis of Specific Contaminated Status and Pollutant Loads Contribution Rate of the Tributaries in Gumho and Nam River Basin vol.18, pp.4, 2016,