037-2 Wyo. Code R. § 2-5
a. The State Board of Control has supervision over the waters of Wyoming and their appropriation, distribution and diversion, and of the various officers connected therewith. The Board serves as a quasi-judicial body in the adjudication of water rights, and in the consideration of contests and petitions affecting adjudicated water rights.
b. Historically, the first duty of the Board was to determine the priorities of rights to use the water flowing in the streams of Wyoming, beginning with the streams most heavily used for irrigation. This task was accomplished by a general stream adjudication for the entire state. Thereafter, the Board has continued to adjudicate surface and ground water rights under permit and to consider petitions dealing with abandonment, amendment, or change of water rights.
c. The Board is directed by W.S. 41-3-601 to divide the State into several water commissioner districts within each of the four water divisions. On recommendation of the State Engineer or the division superintendent, the Board may change the water commissioner district boundaries.
037-2 Wyo. Code R. § 2-5