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http://dx.doi.org/10.9798/KOSHAM.2011.11.1.077

Estimation of Probable Maximum Flood by Duration using Creager Method  

Kang, Boo-Sik (단국대학교 토목환경공학과)
Ryu, Seung-Yeop (단국대학교 토목환경공학과)
Publication Information
Journal of the Korean Society of Hazard Mitigation / v.11, no.1, 2011 , pp. 77-84 More about this Journal
Abstract
The methods of the rational formula and Kajiyama formula have been widely used for estimating the peak flood for design to all kind of hydraulic structure. However, there are many limitations and we have to apply these methods to ungauged basin. These methods require to calculate the Probable Maximum Precipitation (PMP) before determining the Probable Maximum Flood (PMF). Creager's method (Creager et al., 1945) is a kind of estimation of specipic flood and this method provided nonlinear equations based on relationship between the drainage area and PMF in order to calculate the PMF of multipurpose dams over medium-sized. But this method has not much applied in Korea. Creager's coefficient is not clear about its application because this method has never been applied to dams in Korea. Based on the PMP for rainfull-runoff models with the PMF of small and larger dams in this research, the range and standard of Creager's coefficients with parameters are proposed to apply basin areas in Korea.
Keywords
Creager equation; PMF; Specific peak discharge; Rainfall-runoff;
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