The plan for the Meinung reservoir included building the dam straight across the old tropical "mother forest" which traversed the mouth of the valley; the entire Yellow Butterfly Valley would be submerged.
計畫中美濃水庫的壩址，將橫切過谷口處歷史悠久的熱帶母樹園，整個黃蝶翠谷都在淹沒區中。