Mont. Code § 76-15-205
In making the determinations and in defining the boundaries, the department shall consider the topography of the area considered and of the state, the composition of soils in the area, the distribution of erosion, the prevailing land use practices, the desirability and necessity of including within the boundaries the particular lands under consideration and the benefits those lands may receive from being included within the boundaries, the relation of the proposed area to existing watersheds and agricultural regions and other conservation districts already organized or proposed for organization under this chapter, and such other physical, geographical, and economic factors as are relevant, having due regard to the legislative determination set forth in 76-15-101 and 76-15-102. The territory to be included within the boundaries need not be contiguous.
§ 76-15-205, MCA