Enforcement Rules for Water Act Article 17

Entities that have obtained temporary right of water usage pursuant to Article 21 of the Act should immediately stop the usage as notified by the authority-in-charge or as requested by an interested party through the authority-in-charge when the water source is unable to maintain a constant yield over the granted duration of right.The temporary right of water usage may be reapplied according to the provisions of the Act upon expiration if the continuing use of water is deemed necessary.
中文原文 水利法施行細則第17條
依本法第二十一條規定取得臨時使用權者,於其臨時使用權期限內,如遇水源不能保持通常水量時,經主管機關通知後,臨時使用權人應即自行停止使用或由利害關係人報請主管機關停止之。
臨時使用權於核准期限屆滿後,如有繼續使用之必要時,應依本法規定重新申請臨時用水登記。

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