Utah Code § 73-29-207: Fences across public water.

(1) The owner of a public access area adjacent to and lying beneath a public water may place a fence or obstruction across a public water for agricultural, livestock, or other lawful purposes.

(2) A fence or other obstruction shall:

(a) comply with an applicable federal, state, or local law; and

(b) be constructed in a manner that does not create an unreasonably dangerous condition to the public lawfully using the public water.

(3) The owner of a public access area shall allow the placement of a ladder, gate, or other facility allowing portage around a fence or obstruction if:

(a) the owner places a fence or obstruction across a public water in accordance with Subsection (1); and

(b) the water is open to public recreational access by permission or under Section 73-29-203.