Thirty percent of that, the area west of Provincial Highway 17, is lower than the mean high water point. That means that any day the tides could turn much of this land into ocean were there no sea walls standing in the way.
其中在台 17 線以西土地約佔 3 成，全部低於「平均高潮位」，也就是每天只要一漲潮，若無海堤保護，這些地區大半是汪洋一片。