The department of natural resources and the department of conservation shall develop an interagency plan and execute an interagency agreement regarding the application and use of any portion of funds authorized for the respective departments by provisions of the Constitution, taking into consideration the purposes for which the voters approved the funds and the extent to which expenditures under the provisions of sections 252.300 to 252.333, or sections 620.552 to 620.574, accomplish such purposes. Such interagency agreements shall not be subject to legislative review or oversight and are not rules within the meaning of any law providing for review by the general assembly or any committee thereof.