After the cross-island highway, which follows the Tachia River, was completed, the forests were cut down and orchards planted. Since then, the Tachia has become muddy and turbulent, and the downstream portion has suffered a number of disasters.
沿大甲溪而行的中橫公路完工後，沿途山坡種起果樹，森林被砍除，從此溪流濁水滾滾，下游屢遭水患，櫻花鉤吻鮭其實是最早的受害者。