Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Research on the Evaluation of Impaired Waterbody using the Flowrate Group at TMDL Unit Watershed in Nakdong River Basin

수질오염총량관리 단위유역 유량그룹별 수체 손상 분석

  • Hwang, Ha-Sun (Water Pollution Cap System Division, National Institute of Environmental Research) ;
  • Kim, Sang-Soo (Water Pollution Cap System Division, National Institute of Environmental Research) ;
  • Kim, Jin-Lee (Water Pollution Cap System Division, National Institute of Environmental Research) ;
  • Park, Bae-Kyung (Water Pollution Cap System Division, National Institute of Environmental Research)
  • 황하선 (국립환경과학원 수질총량연구과) ;
  • 김상수 (국립환경과학원 수질총량연구과) ;
  • 김진이 (국립환경과학원 수질총량연구과) ;
  • 박배경 (국립환경과학원 수질총량연구과)
  • Published : 2012.11.30
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Abstract

The purpose of this study is to evaluate the degree of waterbody impairment according to the flow conditions and present to the appropriate water quality improvement alternatives using observed water quality and flow for Total Maximum Daily Load (TMDL) implementation at 39 unit watersheds the nakdong river basin. Observed water quality data for 7 years are divided into five cumulative flow frequency group and comparing the each observed water quality data and TMDL Target water quality (TWQ) the last evaluate the water quality is impaired group. We found that the cumulative flow frequency group-specific the average excess rate of V group was the highest (32.86%), followed by the IV group (26.04%), group III (23.36%), II group (22.67%), I group (20.70%), the degree of impaired waterbody tended to be inversely proportional to the flow rate. Resulted from cumulative flow frequency group of impaired water quality assessment, 13 unit watersheds are impaired from a group IV and group V affected by point sources. Therefore, improvement of sewage discharge and the initial composition of the riparian buffer zone are needed. Nakbon F, Namkang D and Namkang E within 13 unit watersheds are impaired from group II and III affected by non-point sources. Therefore, application of Best Management Practices (BMPs) is needed for these watersheds. Evaluation of impaired waterbody using Cumulative flow frequency group is able to determine the extent of the judgment to TWQ exceeded by the flow conditions and helps proper setting Standard flow and planning pollutant reduction for TMDL.

Keywords

References

  1. Cleland, B. R. (2003). TMDL Development from the "Bottom up" - Part III : Duration Curve and Wet Weather Assessment, National TMDL Science and Policy 2003-WEF Specialty Conference, Chicago, IL.
  2. Daegu Metropolitan City. (2010). The Second Stage Basic Plan of Daegu TMDL in Nakdong River, Daegu Metropolitan City, pp. 7-9. [Korean Literature]
  3. Gangwon-Do. (2010). The Second Stage Basic Plan of Kangwon- Do TMDL in Nakdong River, Gangwon-Do, pp. 7-8. [Korean Literature]
  4. Han, S. H., Shin, H. S., and Kim, S. D. (2007). Applicability of Load Duration Curve to Nakdong River Watershed Management, Journal of Korean Society on Water Environment, 23(5), pp. 620-627. [Korean Literature]
  5. Hwang, H. S., Park, B. K., Kim, Y. S., Park, K. J., Cheon, S. U., and Lee, S. J. (2011). Research on the applicability of the Load Duration Curve to evaluate the achievement of target water quality in the Unit Watershed for a TMDL, Journal of Korean Society on Water Environment, 27(6), pp. 885-895. [Korean Literature]
  6. Hwang, H. S., Yoon, C. G., and Kim, J. T. (2010). Application Load Duration Curve for Evaluation of Impaired Watershed at TMDL Unit Watershed in Korea, Journal of Korean Society on Water Environment, 26(6), pp. 903-909. [Korean Literature]
  7. Jang, J. H., Lee, H. J., Kim, H. K., Park, J. H., Kim, J. H., and Rhew, D. H. (2010). Improvement of Water Quality and Streamflow Monitoring to Quantify Point and Nonpoint Source Pollutant Loads, Journal of Korean Society on Water Environment, 26(5), pp. 860-870. [Korean Literature]
  8. Kim, C. G. and Kim, N. W. (2009). Derivation of Continuous Pollutant Loadograph using Distributed Model with 8-day Measured Flow and Water Quality Data of MOE, Journal of Korean Society on Water Environment, 25(1), pp. 125-135. [Korean Literature]
  9. Kyoungsangbuk-Do. (2009). The Second Stage Basic Plan of Kyoungsangbuk-Do TMDL in Nakdong River, Kyoungsangbuk-Do. pp. 7-37. [Korean Literature]
  10. Kyoungsangnam-Do. (2009). The Second Stage Basic Plan of Kyoungsangnam-Do TMDL in Nakdong River, Kyoungsangnam-Do, pp. 7-8-7-9. [Korean Literature]
  11. MOE. (2004). Guidebook for Total Maximum Daily Load Programs, Ministry of Environment. [Korean Literature]
  12. MOE. (2009). Framework Act on Environmental Policy, Ministry of Environment. [Korean Literature]
  13. MOE. (2010). TMDL Framework Policy, Ministry of Environment. [Korean Literature]
  14. Monitoring System for Water Quality and Flow (2011), http://water.nier.go.kr.
  15. NDEP. (2003), Load Duration Curve Methodlogy for Assessment and TMDL, Development Nevada Division of Environmental Protection.
  16. Park, J. D., Kim, J. L., Rhew, D. H., and Jung, D. I. (2010). A Study on the Water Quality Patterns of Unit Watersheds for the Management of TMDLs - in Nakdong River Basin, Journal of Korean Society on Water Environment, 26(2), pp. 279-288. [Korean Literature]
  17. Park, J. D., Oh, S. Y., and Choi, O. Y. (2011). Characterization on the Variation of Streamflow at the Unit Watershed for the Management of Total Maximum Daily Loads - in Guem River Basin, Journal of Korean Society on Water Environment, 27(6), pp. 914-925. [Korean Literature]
  18. Park, J. D., Oh, S. Y., and Choi, Y. H. (2012). A Study on the Suggestions for Standard Flow Conditions considering the Variation of Stream Flow and Water Quality for the Management of Total Maximum Daily Loads, Journal of Korean Society on Water Environment, 28(3), pp. 426-435. [Korean Literature]
  19. Shon, T. S., Park, J. B., and Shin, H. S. (2009). A Study on Estimation of the Delivery Ratio by Flow Duration in a Small-Scale Test Bed for Managing TMDL in Nakdong River, Journal of Korean Society on Water Environment, 25(5), pp. 792-802. [Korean Literature]
  20. U.S. EPA Office of Wetlands, Oceans, & Watersheds. (2006). An Approach for Using Load Duration Curves in the Development of TMDLs.