流出・洪水 (2)

[II-160] Studying factors affecting the fractional recession constant in the storage-discharge relationship for low flow

*藤村 和正¹、井芹 慶彦²、村上 雅博³、柳川 亜季¹、岡田 将治⁴、鼎 信次郎⁵ (1. 明星大学、2. ｶﾘﾌｫﾙﾆｱ大学ﾃﾞｰﾋﾞｽ校、3. 高知工科大学、4. 高知工業高等専門学校、5. 東京工業大学大学院)

Keywords:low flow, flow duration curve, geology, soil, storage-discharge relationship, fractional recession constant

The aim of this study is to investigate the factors of the recession constant in the storage-discharge relationship for low flow for the five dam basins in Japan. Four basins are located in the snowy region. The recession constant for each basin was already identified, and which are compare to the flow discharge curve, geology and soil of each basin in this study. The result shows that the recession constant appear to be related with flow discharge curve, geological legend, lithology.