Idaho Code § 18-4304

Any person who without the consent of the water master of the district, diverts any water from a ditch or channel where it has been placed, or caused or left to run by the water master or his deputies, or who shuts or opens any ditch, gate or dam, or in any way impedes or increases the flow of water in any stream or ditch diverting water from a stream, while the same is under the charge of a water master, or who cuts away any embankment of a stream, whereby the water of such stream is diverted, or breaks, injures, or removes any gate, flume or other device used for the equitable distribution of the water of such stream by the water master, shall be guilty of a misdemeanor.