Water Act Article 56

When it is necessary to build a weir or a flood gate on a non-navigable waterway with traffic of bamboo or wooden rafts or fishing for a water work, the proprietor shall build routes for such rafts or fishing at proper locations; the measures therefor shall be promulgated by the authority-in-charge.The costs and expenses of construction under the preceding paragraph shall be borne by the proprietor.
中文原文 水利法第56條
在不通航運而有竹木筏運或產魚之水道上,因興辦水利事業,必須建造堰壩水閘時,應於適當地點,建造竹木筏運道或魚道,其辦法由主管機關定之。
前項工程費用,由興辦水利事業人負擔之。

English translation for reference only; the Chinese text prevails. Not legal advice.