Mont. Code Ann. § 17-3-232

All moneys received or to be received by the county treasurers of the counties of the state wherein such flood control land is situated shall be deposited in the funds designated as the county common school tax fund and the general public road fund and shall be expended as follows: of all moneys received or to be received, 50% shall be expended for the benefit of the county common schools in the county concerned and 50% shall be expended for the benefit of the general public roads in the county concerned.