SDCL § 46-7-14: Unauthorized injury to or interference with pier, boom, or dam prohibited.

No person may, without authority of law, interfere with any pier, boom, or dam lawfully erected or maintained upon any waters within this state, hoist any gate of a dam, whether in or about the dam, damage or destroy any dam or any embankment necessary for support of the dam or maliciously make or cause to be made any aperture or cut in the dam or embankment with intent to damage or destroy it.