Ariz. Rev. Stat. § 11-110
Mohave county, the county seat of which is Kingman, is bounded as follows:
Commencing at a point on the boundary line between Utah and Arizona, being approximately the thirty-seventh parallel north latitude where such boundary line intersects Kanab creek, being the northwest corner of Coconino county; thence west on the Utah and Arizona boundary to the western boundary line of Arizona; thence southerly and on the western boundary line of Arizona and down the main channel of the Colorado river to Davis dam; thence following the state boundary as defined in the Arizona-Nevada and Arizona-California boundary compacts to the mouth of the Bill Williams' river; thence up the Bill Williams' river to the junction of Bill Williams' river and the main channel of the Santa Maria river; thence up the Santa Maria river to the point where the meridian line one hundred thirteen degrees twenty minutes west longitude, as defined by the Mohave-Yavapai county boundary survey of 1908, intersects the main channel of the Santa Maria river; thence north on the meridian as surveyed and along the western boundary line of Yavapai county to its intersection with the south boundary line of Coconino county; thence continuing along this alignment to the point where the meridian line one hundred thirteen degrees twenty minutes west longitude, as defined, intersects the Colorado river; thence up the Colorado river to the mouth of Kanab creek; thence up Kanab creek to the point where such creek intersects the boundary line between Utah and Arizona, being approximately the thirty-seventh parallel of north latitude, the place of beginning.
A.R.S. § 11-110