In any contested case proceedings, the hearing officer or the Board members may take notice of maps, documents, or other papers in the docket file, which have been brought to the attention of the parties. Official notice may also be taken of all information, data, and the material included within the books and records of the State Engineer and the State Board of Control. The Board may also make on-the-ground inspections. If official notice is to be taken of any information, data, or material not previously made available to the parties, or if a field inspection is relied upon, the parties shall be given notice and an opportunity to present rebuttal evidence (see W.S. 16-3-108 [d]).
037-6 Wyo. Code R. § 6-9