The Mohon Mountains area in Yavapai and Mohave Counties (forms the border between the counties in part) has range suitable for cattle because of the altitude-cover as well as grass. There are several oldtime ranches in the region. There are even some wetlands.
Never heard Mohave pronounced with two syllables, but I guess it could be.
The Mohave Desert definitely is not referred to, since it gets less than five inches of rainfall and is mostly unsuited to cattle. It is to the south and west of the Mohon region. The Mohon gets over fifteen inches of rainfall, including snow.