Wyo. Stat. § 41-6-303
Unless the owners of ditches, canals and reservoirs make a record as herein provided, or have a record thereof made in some other manner, showing the relative ownership of each interested party in such irrigation works, said interests shall be established by the ratio between the water right of each water user to the total water rights adjudicated under such irrigation works. The relative interests of joint owners shall, therefore, be fixed by the issuance of the final certificate of appropriation as the same appears of record on the date of the passage of this act or as they shall hereafter be recorded in the office of the board of control and in the office of the respective county clerks, and no action for the recovery of the title to such irrigation works can be brought after ten (10) years from the date when the final certificates of appropriation have been recorded in the office of said county clerk; provided, that during such ten (10) years the interested water users as mentioned in the final certificates of appropriation, or their successors, have had continuous, open, adverse and undisputed possession of such irrigation works. Every conveyance of a ditch, canal or reservoir, or any interest therein, shall hereafter be executed and acknowledged in the same manner as a conveyance of real estate and recorded as herein provided, and any such conveyance which shall not be made in conformity with the provisions of this act, shall be null and void as against subsequent purchasers thereof in good faith and for a valuable consideration.
W.S. 41-6-303