Ariz. Rev. Stat. § 45-261
A. Except as otherwise specifically provided in this article and to the extent that water rights have not been forfeited or abandoned, the director, the master and the court shall apply the following evidentiary rules in determining the attributes of water rights claimed pursuant to this article:
C. Section 45-256, subsections D and E apply to the evidentiary weight given to the following determinations made by the director: