WY Stat § 41-3-401 (2021)
2021 Wyoming Statutes|Title 41 - Water|Chapter 3 - Water Rights; Administration and Control|Article 4 - Abandonment of Water Rights|Section 41-3-401 - Failure to Use Water; Extension of Time; Initiation by Benefitted or Injured User; Hearing; Appeal.

41-3-401. Failure to use water; extension of time; initiation by benefitted or injured user; hearing; appeal.| (a) Where the holder of an appropriation of water from a surface, underground or reservoir water source fails, either intentionally or unintentionally, to use the water therefrom for the beneficial purposes for which it was appropriated, whether under an adjudicated or unadjudicated right, during any five (5) successive years, he is considered as having abandoned the water right and shall forfeit all water rights and privileges appurtenant thereto. Notwithstanding any provision in this section to the contrary, the holder of an appropriation for the diversion and storage of water in a reservoir, from which water or a portion thereof has not yet been beneficially used for the purposes for which appropriated, may apply to the board of control for an extension of time not to exceed five (5) years, within which to use water therefrom for the beneficial purposes for which it was appropriated. In the application the holder shall demonstrate the exercise of due diligence toward the utilization of the appropriation, and that notwithstanding the exercise of due diligence, reasonable cause exists for nonuse. Reasonable cause includes but is not limited to delay due to court or administrative proceedings, time required in planning, developing, financing and constructing projects for the application of stored water to beneficial use which require in excess of five (5) years to complete, delay due to requirement of state and federal statutes and rules and regulations thereunder and any other causes beyond the control of the holder of the appropriation. Upon receipt of an application for extension, the board of control shall proceed under the provisions of W.S. 16-3-101 through 16-3-115 and may grant an extension of time as it finds proper, not to exceed five (5) years, for the application of the appropriated water to the beneficial use for which it was appropriated. A prior grant of extension of time hereunder does not preclude the holder from applying for additional extensions of time, each not to exceed five (5) years, upon similar application and showing. The granting of an extension of time precludes the commencement of an abandonment action against the appropriation during the period of extension.  (b) When any water user who might be benefitted by a declaration of abandonment of existing water rights or who might be injured by the reactivation of the water right, desires to bring about a legal declaration of abandonment, he shall present his case in writing to the state board of control. The board has exclusive original jurisdiction in water right abandonment proceedings. The board shall, if the facts so justify, refer the matter to the superintendent of the water division where the abandonment is claimed to have occurred for public hearing. The total absence of water to divert during an irrigation season precludes the inclusion of any such period of nonuse resulting therefrom in the computation of the successive five (5) year period under this section. The following persons have standing to petition the state board of control to declare the abandonment of existing water rights under this section:  (i) Any person who has a valid adjudicated water right or is the holder of a valid permit from the same source of supply which is equal to or junior in date of priority to the right for which abandonment is sought; or  (ii) The holder of a valid water right entitled to surplus water under W.S. 41-4-318 through 41-4-324, petitioning to abandon a water right from the same source of supply if the right sought to be abandoned has a priority date of March 1, 1945, or earlier.  (c) The superintendent shall notify the holders of water rights sought to be abandoned by certified mail that a hearing will be held. The hearing shall be conducted pursuant to all applicable provisions of the Wyoming Administrative Procedure Act. All notices shall advise interested parties of the time, place and purpose of the hearing. Parties initiating abandonment actions are designated as contestants. Water right holders or other persons with interests in the rights allegedly abandoned are designated as contestees. In any case where notice by certified mail cannot be accomplished an advertisement published once a week for three (3) consecutive weeks in a newspaper of general circulation in the county in which the abandonment is alleged to have occurred, naming the parties in the case and setting forth the time, place and purpose of the hearing is sufficient. Cost of advertising shall be paid by the contestant.  (d) A transcript shall be made of the hearing and delivered to the superintendent. The contestant shall provide and pay for the costs of the record. At the conclusion of the hearing the transcript, all other evidence and the report of the superintendent shall be transmitted to the board by the superintendent. At its next meeting the board shall vote to declare the right in question abandoned, either wholly or partially, or to decline to do so.  (e) The board shall enter an order reflecting its action on the abandonment hearing, and shall, within sixty (60) days, send a certified copy of the declaration to each contestant and contestee. Appeals may be taken as provided by law.  (f) An appropriation for irrigation use is not subject to partial abandonment for failure of the appropriator to irrigate part of the lands described in his permit or certificate of appropriation during the successive five (5) year period if:  (i) Facilities to divert the water and to apply it to beneficial use upon the lands which were not irrigated existed in usable form during the period of nonuse; and  (ii) There was not a sufficient supply of water available, because of regulation for prior water rights or because shortage of supply resulted in insufficient water to satisfy the appropriation in full, to irrigate the lands for which abandonment is sought provided that a diligent effort was made to use the supply which was available.