Every year on May 8 a ceremony is held to honor Japanese engineer Yoichi Hatta (1886-1942) at his grave near Wushantou Reservoir. Those who solemnly pay their respects to "the father of the Chianan Irrigation Waterworks" amid copious offerings of flowers and fruits include both Chianan farmers and admirers who make the trip all the way from Japan. They keep coming year after year-even now, 66 years after Hatta's death.
每年 5 月 8 日，有「嘉南大圳之父」稱譽的日籍工程師八田與一（1886-1942）位於烏山頭水庫的墓園，總會擺滿了鮮花素果，包括嘉南農民和來自日本景仰他的人士，二、三百位民眾默默地上香祭悼，自他去世後，66 年來從未中斷。