037-1 Wyo. Code R. § 1-6
Any person with a water right in a stream system may in writing, request the hydrographer commissioner or water commissioner to regulate the source of supply for his or her benefit. If regulated during periods of decreased natural supply, the priority of the appropriations will be observed as nearly as practical and the headgates for the junior-most appropriations may be adjusted in order to satisfy senior appropriations. The request shall be made in writing on a form provided by the State Board of Control (see Appendix A of these Regulations and Instructions for a sample). Upon approving a proper request for regulation, the hydrographer commissioner or water commissioner will act to limit each water right in accordance with the priority and amounts recorded in the official records of the state. Both direct flow and the filling of storage rights are regulated in the same priority manner. The regulation of ground water appropriations generally follows priority regulation except for ground water appropriations located within control areas. W.S. 41-4-208 requires the Board to publish a tabulation of adjudicated water rights to facilitate regulation. Where special provisions for administration of water rights arise by judicial decree, such rights shall be administered in accordance with applicable laws.
037-1 Wyo. Code R. § 1-6