Utah Code § 57-13a-102: Prescriptive easement for water conveyance.

(1) A prescriptive easement may be established if a water user has maintained a water conveyance for a period of 20 years during which the use has been:

(a) continuous;

(b) open and notorious; and

(c) adverse.

(2) If Subsections (1)(a) and (b) are established, there is a rebuttable presumption that the use has been adverse.