Idaho Code § 42-902

Any person who, without the consent of the watermaster of the district, diverts any water from the ditch or channel where it was placed, or caused, or left to run by the watermaster or his deputies, or who shuts or opens any ditch, gate or dam with intent so to divert any water, and thereby deprive any person of the use of the same during any part of the time he is entitled to such use, or who, without the consent of the watermaster, cuts any ditch or the banks thereof, or breaks or destroys any gate or flume, is liable in a civil action to any person injured thereby in three times the actual damage sustained in consequence of any such wrongful act or acts.