- Volume 13 Issue 4
A Study on the Integration of Watershed and Stream Models for Impact Assessment of Urban Development on Water Environment
도시개발에 따른 수환경 변화 예측을 위한 소수계 유역·하천 통합 모델 연구
- Kang, You-Sun (Dept. of Environmental Science and Engineering College of Engineering, Ewha Womans University) ;
- Park, Seok-Soon (Dept. of Environmental Science and Engineering College of Engineering, Ewha Womans University)
- Received : 2003.10.09
- Accepted : 2004.07.19
- Published : 2004.08.31
An integration study of time-variable small watershed and stream models (USEPA's SWMM and WASP5) was performed for impact assessment of urbanization on water environment. The study area, the Kyoungan Stream, the tributary of Paldang Lake, was divided into 111 subbasins, based on the topographic condition, land use, and drainage system. RUNOFF block of SWMM was applied to estimate runoff flow and quality. EXTRAN block computed daily and hourly flow according to simulated runoff flow, water supply, and drainage data. SWMM was connected to WASP5 by transforming output file of SWMM into input file of WASP5. The nonpoint source loads and flow data of SWMM were imported to WASP5. The stream was divided into 45 segments based on the watershed delineation. The study included three water quality parameters, BOD, TN, and TP. The validate models were used to examine the impact of urbanization on stream flow and water quality.
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