The method of flow frequency analysis currently in common use are the Log Pearson typeⅢ, Hazen, Gumbel, Gamma and graphical distribution-free method. In this study, the applicability of Log Pearson typeⅢ distribution was used for determining flood...
The method of flow frequency analysis currently in common use are the Log Pearson typeⅢ, Hazen, Gumbel, Gamma and graphical distribution-free method. In this study, the applicability of Log Pearson typeⅢ distribution was used for determining flood frequency at 8 gaging stations in the Gum and the Yong San river basin.
As the result of this inverstigation I reached the conclusion that the coefficient of Skew varies from 0.133 to 0.826 at the Gum river basin and from 0.376 to 1.484 at the Yong San river basin. Therefore, computation of flood frequncy used average coeffiint of Skew, 0.4 at the Gum river basin and 0.8 at the Yong San river basin. The frequency curve was plotted by Log Pearson typeⅢ method on nomal probability paper in fig.(1∼8)