KWRA
- 홈
- 문헌정보
- 논문집
문헌정보
논문집
- 저자명
- 우소영;김성준;황순진;정충길
- 발행사
- 한국수자원학회
- 수록사항
- 한국수자원학회논문집 특집호, Vol.52 No.S-2(2019-10)
- 페이지
- 시작페이지(777)
- ISSN
- 1226-6280
The purpose of this study is to evaluate changes in water quality and aquatic ecosystem health by additional dam release of stream maintenance flow from multipurpose dams in Han river basin (34,148 km2) using SWAT (Soil and Water Assessment Tool). The period of additional release was spring (April to June) and autumn (August to October) to evaluate the changes with the data of aquatic ecosystem health survey. The amount of additional release was set proportional to the present dam release, and the maximum release amount was controlled not to exceed the officially notified stream maintenance flow from dam. The 10 percent to 50 percent additional releases showed that the stream water quality (T-N, NH4, T-P, and PO4-P) concentrations except NO3-N decreased in spring while increased in autumn period. Using the stream water quality results and applying with Random Forest algorithm, the grade of aquatic ecosystem health index (FAI, TDI, and BMI) was improved for both periods especially in the downstream of basin. This study showed that the additional release of stream maintenance flow was more effective in spring than autumn period for the improvement of water quality and aquatic ecosystem.
