砂防ダムを含む山地小流域の水文諸量と出水遅延効果について

概要

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Over the past few decades, some of the Sabo dam studies have been focused on the entrapment function of debris flow and structural of dam. Few attempts have been made to investigate the hydrologic data of Sabo dam. Therefore, we have been observed hydrological measurements in small drainage basin which include a Sabo dam. An observation was conducted to determine the effects of concentration time and runoff peak response time at downstream of a Sabo dam in discharge. The concentration times were 50-490 minutes and almost were longer than value of Kadoya expression. The runoff peak response times were 20-190 minutes. Moreover, we have been analyzed this hydrological measurements data by Sugawara tank model. As a result, we have concluded that we identified Sugawara tank model parameter using 30 minute runoff peak response time.