Wyo. Stat. § 41-4-326: Conclusiveness of final decrees of board.

The final orders or decrees of the state board of control, in the proceedings provided by law for the adjudication and determination of rights to the use of the public waters of the state, shall be conclusive as to all prior appropriations, and the rights of all existing claimants upon the stream or other body of water lawfully embraced in the adjudication, subject, however, to the provisions of law for rehearings in such proceedings and for the reopening of the orders or decrees therein and for appeals from such orders or decrees.