Water Act Article 92

Any person who opens or blocks waterways without due permission from the authority-in-charge shall be punished with a fine of no less than six thousand yuan but no more than thirty thousand yuan, in addition to restoring or discontinuing the act within a prescribed period. If such offense results in damages to others’ interests, a sentence of imprisonment of no more than three years, detention, or a fine from four thousand to twenty thousand yuan, or a combination thereof shall be imposed. If such offense causes public hazards, a sentence of imprisonment of no more than five years, a fine of six thousand to thirty thousand yuan, or a combination thereof shall be imposed.
中文原文 水利法第92條
未得主管機關許可,私開或私塞水道者,除通知限期回復或廢止外,處六千元以上三萬元以下罰鍰;因而損害他人權益者,處三年以下有期徒刑、拘役或科或併科四千元以上二萬元以下罰金;致生公共危險者,處五年以下有期徒刑,得併科六千元以上三萬元以下罰金。

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