Chen Jen-chung notes that the best areas between Ilan and Taitung for positioning pipes are near river estuaries. In these river delta environments, they observed after pipe-laying that flooding triggered by typhoons may result in increased turbidity of the estuarial waters. Therefore he recommends that operators not pump for three weeks after a typhoon passes.
陳仁仲指出，從宜蘭、花蓮到台東，適合佈管的位置都在河口附近，原本就屬於沖積扇環境，佈管後他們觀察到颱風過後若引發大洪水，可能造成河口水質變濁，因此他曾建議業者，颱風過後的 3 個星期內不要抽水。