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http://dx.doi.org/10.3741/JKWRA.2003.36.1.033

Dimensionless flow Duration Curve in Natural River  

Park, Sang-Deog (강릉대학교 공과대학 토목공학과)
Publication Information
Journal of Korea Water Resources Association / v.36, no.1, 2003 , pp. 33-44 More about this Journal
Abstract
Flow duration curves provide a compact summary of streamflow variability. In this study, characteristics of the dimensionless flow duration curve in natural rivers with the unregulated discharge were investigated. An analysis of flow duration characteristics was conducted with discharge data at stage-gauging stations of IHP representative basins and of the major rivers in Korea. Discharge characteristics are dependent on area of watershed. However, flow duration coefficients except drought duration coefficient are independent on that. Abundant flow duration coefficient was constant value. The coefficient of flow duration variability defined in this study as the ratio of the normal stream flow over the drought one is decreased with increasing of the watershed area, which implies that the watershed area affects the drought flow duration variability more than the low flow one. And the coefficient of flow duration variability is increased with the river gradient.
Keywords
dimensionless flow duration curve; flow duration variability; drought duration coefficient; low duration coefficient;
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Times Cited By KSCI : 2  (Citation Analysis)
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