Hsieh Sheng-hsin, director of the Pingtung County Water Resources Bureau, states that the dikes on the Linbian River were designed only for a "100-year flood" (i.e. a flood of a severity likely to occur only once in every 100 years), but the rains of Morakot created a 250-year flood, far exceeding the capacity of the dikes.
屏東縣政府水利處處長謝勝信表示，林邊溪的防洪設計是依 100 年洪水頻率，而這次莫拉克降雨已達 250 年洪水頻率，遠遠超過堤防負荷。