미계측 유역에서 저수량 산정 방법 비교 연구 = Comparative Study on Evaluating Low-Flow in Ungauged Watershed

다국어 초록 (Multilingual Abstract)

In this study, the methodologies for evaluating the low-flow at the ungauged watershed are reviewed and assessed. The ungauged watershed can be classified into different situations such as the partially recorded watershed and the completely ungauged watershed. The extension method and the percentile method are used to evaluated the low-flow at the partially recorded watershed. The drainage-area ratio method and the regional regression method are used at the completely ungauged watershed. These four methods are applied and validated based on the hydrological and geometric data acquired from unit watersheds in Han River basin for TMDLs. In case of partially recorded watershed, the values of low-flow evaluated by the extension method are in better agreement with measured flow-rate rather than those by the percentile method. In case of completely ungauged watershed, the drainage-area method is broadly used to estimate the low-flow. It must be paid attention to consider the treated sewage discharge produced at watersheds when applying the method

참고문헌 (Reference)

1 김상단, "유역모형 구축을 위한 8일간격 유량측정자료의 일유량 확장 가능성" 한국물환경학회 23 (23): 64-71, 2007

2 조탁근, "국내 미계측유역의 갈수량 산정 개선" 한국수자원학회 40 (40): 113-124, 2007

3 N. Kottegoda, "Statistics, Probability, and Reliability for Civil and Environmental Engineers" Mcgraw-Hill Inc 1997

4 R. Vogel, "Regional Geo-hydrological Geo-morphic Relationships for the Estimation of Low-flow Statistics" 28 (28): 2451-2458, 1992

5 K. Ries, "Methods for Estimating Low-Flow Statistics for Massachusetts Streams" U.S. Geological Survey 2000

6 R. Hirsch, "A Comparison of Four Streamflow Record Extension Techniques" 18 (18): 1081-1088, 1982

7 백경오, "8일 간격으로 부분 계측된 유량을 연속 일유량으로 확장하는 방법" 한국수자원학회 45 (45): 91-99, 2012