It has already been decided to raise the dikes on the island from fourto six meters, and the level of protection is classified as "20-year flood frequency." As a result, from now on buildings in residential areasthat are under six meters above sea level will be required to be built on stilts out of consideration for human safety.
社子島堤防目前已決定從四公尺加高為六公尺，保護程度係屬「廿年洪水頻率」，因此日後住宅區在低於海拔六公尺處，均須做挑空處理，以保基本生命安全。