Water Act Article 2

Water resources, being part of the natural resources, are owned by the state, and the state ownership is not prejudiced by the land ownership of any persons.
中文原文 水利法第2條
水為天然資源,屬於國家所有,不因人民取得土地所有權而受影響。

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