Montana Title 27. Civil Liability, Remedies, and Limitations § 27-30-101. Definition of nuisance

(1) Anything that is injurious to health, indecent or offensive to the senses, or an obstruction to the free use of property, so as to interfere with the comfortable enjoyment of life or property, or that unlawfully obstructs the free passage or use, in the customary manner, of any navigable lake, river, bay, stream, canal, or basin or any public park, square, street, or highway is a nuisance.

(2) Nothing that is done or maintained under the express authority of a statute may be deemed a public or private nuisance.

(3) An agricultural or farming operation, a place, an establishment, or a facility or any of its appurtenances or the operation of those things is not or does not become a public or private nuisance because of its normal operation as a result of changed residential or commercial conditions in or around its locality if the agricultural or farming operation, place, establishment, or facility has been in operation longer than the complaining resident has been in possession or commercial establishment has been in operation.

(4) Noises resulting from the shooting activities at a shooting range during established hours of operation are not considered a public nuisance.