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Watershed Modeling Application for Receiving Water Quality Management in Nakdong River Basin  

Jang, Jae-Ho (Division of Water Environment, Korea Environment Institute)
Ahn, Jong-Ho (Division of Water Environment, Korea Environment Institute)
Publication Information
Journal of Korean Society on Water Environment / v.28, no.3, 2012 , pp. 409-417 More about this Journal
Abstract
SWAT model was applied for the Nakdong River Basin to characterize water quality variability and assess the feasibility of using the load duration curve to water quality management. The basin was divided into 67 sub-basins considering various watershed environment, and rainfall runoff and pollutant loading were simulated based on 6 year measurements of meteo-hydrological data, discharge data of treatment plants, and water quality data (SS, T-N and T-P). The results demonstrate that non-point source loads during wet season increase by 80 ~ 95% of total loads. Although the rate of water flow governs the amount of SS that is transported to the main streams, nutrient concentrations are highly elevated during dry season by being concentrated. This phenomenon is more pronounced in the lower basin, receiving large amounts of urban point source discharges such as treated sewages. Also, the load duration curves (LDC) demonstrate dominant source problems based on the load exceedances, showing that SS concentrations are associated with the rainy season and nutrients, such as T-P, may be more concentrated at low flow and more diluted at higher flow. Overall, the LDC method could be used conveniently to assess watershed characteristics and pollutant loads in watershed scale.
Keywords
Load Duration Curve (LDC); Nakdong River Basin; Pollutant loads; SWAT model; Water quality management;
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1 김남원, 신아현(2009). SWAT 모형의 하도 수질 모듈의 개선, 수질보전 한국물환경학회지, 25(6), pp. 902-909.
2 김남원, 신아현, 이정우(2009). SWAT 모형의 유출해석모듈 개선이 수질모의에 미치는 영향, 한국수자원학회논문집, 42(4), pp. 297-307.
3 물환경정보시스템(2010). 수질오염총량관리 측정망 자료, http://water.nier.go.kr/.
4 박준대, 신동석, 김문숙, 공동수, 류덕희, 정동일, 나은혜(2008). 수질오염총량관리를 위한 하천수질모델(QUAL-NIER) 개발, 수질보전 한국물환경학회지, 24(6), pp. 784-792.
5 안종호, 홍용석, 강형식, 김호정, 한대호, 장재호, 서동일, 박윤희(2010). 기후변화 대응을 위한 수질 제어 및 관리방안 I, 경제인문사회연구회, 녹색성장종합연구총서, 10-02-97 (6), 한국환경정책.평가연구원, pp. 112-116.
6 장재호, 윤춘경, 정광욱, 이새봄(2009). BASINS/SWAT 모델을 이용한 경안천 유역의 오염부하 배출 특성, 한국하천호소학회지, 42(2), pp. 200-211.
7 환경부(2008). 2007년 상수도 통계연보, pp. 308-353.
8 토양환경정보시스템(2009). 토양환경지도, 토양특성, http://egis.me.go.kr/egis/.
9 환경부 환경지리정보서비스(2009). 중분류 토지피복지도, http://egis.me.go.kr/egis/.
10 황하선, 박배경, 김용석, 박기중, 천세억, 이성준(2011). 수질 오염총량 단위유역의 목표수질 달성여부 평가를 위한 부하지속곡선 적용성 연구, 수질보전 한국물환경학회지, 27(6), pp. 885-895.
11 황하선, 윤춘경, 김지태(2010). 수질오염총량 단위유역의 유량조건별 수체 손상 평가를 위한 부하지속곡선 적용성 연구, 수질보전 한국물환경학회지, 26(6), pp. 903-909.
12 Arnold, J. G., Allen, P. M., and Bernhardt, G. (1993). A Comprehensive Surface Groundwater Flow Model, Journal of Hydrology, 142, pp. 47-69.   DOI   ScienceOn
13 ASCE (1993). ASCE Task Committee on Definition of Criteria for Evaluation of Watershed Models, Irrigation Drainage Engineering, 119(3), pp. 429-442.   DOI   ScienceOn
14 Nash, J. E. and Sutcliffe, J. V. (1970). Riverflow Forecasting through Conceptual Model, Journal of Hydrology, 10(3), pp. 282-290.   DOI   ScienceOn
15 Nevada. (2003). Load Duration Curve Methodology for Assessment and TMDL Development. Nevada Division of Environmental Protection, April 2003. http://ndep.nv.gov/bwqp/tmdl.htm/.
16 U.S. EPA (2007). An Approach for Using Load Duration Curves in the Development of TMDLs, Office of Wetlands, Oceans, & Watersheds, 841-B-07-006, U.S. EPA, pp. 1-18.
17 Williams, J. R., Nicks, A. D., and Arnold, J. G. (1985). Simulator for Water Resources in Rural Basins, Journal of Hydraulic Engineering, ASCE, 111(6), pp. 970-986.   DOI   ScienceOn
18 Young, R. A., Onstad, C. A., Bosch, D. D., and Anderson, W. P. (1995). AGNPS: An Agricultural Nonpoint Source Model, In Computer Models of Watershed Hydrology, V. P. Singh (ed.). Water Resources Publications, Highlands Ranch, Colorado, pp. 1011-1020.
19 Beasley, D. B. and Huggins, L. F. (1981). ANSWERS Users Manual, EPA 905/9-82-001, U.S. Environmental Protection Agency, Chicago, IL, pp. 1-54.
20 Donigian, Jr., A. S. (2000). HSPF Training Workshop Handbook and CD. Lecture #19. Calibration and Verification Issues, Slide #L19-22, EPA Headquarters, Washington Information Center, 10-14 January, 2000, Presented and prepared for U.S. EPA, Office of Water, Office of Science and Technology, Washington, DC., pp. Slide #L19-22.
21 Johanson, R. C., Imhoff, J. C., Kittle, J. L., and Donigan, A. S. (1984). Hydrologic Simulation Program - Foran (HSPF): User's Manual, Release 8. EPA 600/3-84-006, U.S. Environmental Protection Agency, Athens, GA, pp. 1-767.