Utah Code § 73-29-201: General access provisions.

(1) The public may use a public water for recreational activity if:

(a) the public water:

(i) is a navigable water; or

(ii) is on public property; and

(b) the recreational activity is not otherwise prohibited by law.

(2) A person may access and use a public water on private property for any lawful purpose with the private property owner's permission.

(3) A person may not access or use a public water on private property for recreational purposes if the private property is property to which access is restricted, unless public recreational access is established under Section 73-29-203.