Utah Code § 4-26-103

(1) As used in this section: (a) "Qualified adjoining landowner" means a private landowner whose land adjoins the land of a qualified landowner and is used for grazing livestock or as habitat for big game wildlife and: (i) is land which qualifies under the definition of "conservation easement" as defined in Section 57-18-2, under Title 57, Chapter 18, Land Conservation Easement Act; or (ii) is "land in agricultural use" that meets the requirements of Section 59-2-502. (b) "Qualified landowner" means a private landowner whose land is used for grazing livestock and: (i) is land which qualifies under the definition of "conservation easement" as defined in Section 57-18-2, under Title 57, Chapter 18, Land Conservation Easement Act; or (ii) is "land in agricultural use" that meets the requirements of Section 59-2-502. (2) A qualified landowner may require the qualified adjoining landowner to pay for one-half of the cost of the fence if: (a) the fence is or becomes a partition fence separating the qualified landowner's land from that belonging to the qualified adjoining landowner; (b) the cost is reasonable for that type of fence; (c) that type of fence is commonly found in that particular area; and (d) the construction of the fence is no more expensive than the cost for posts, wire, and connectors. (3) If the qualified adjoining landowner refuses, the qualified landowner may maintain a civil action against the qualified adjoining landowner for one-half of the cost of that portion of the fence. (4) The cost of the maintenance of the fence shall also be apportioned between each party based on the amount of land enclosed. A party who fails to maintain that party's part of the fence is also liable in a civil action for any damage sustained by the other party as a result of the failure to maintain the fence.