The chief sticking point that has held up the third stage of the flood control plan before the Council for Economic Planning and Development is that the plan would require the demolition of 20,000 illegal buildings along the Tahan Creek.
第三期防洪計畫目前仍在經建會審核，而遲遲未決的最大難題就在須拆遷大漢溪旁的二萬違建戶。第一期的疏洪道建設，光為了協調拆遷五千戶民房，就使開工日期延後一年多。