The supervisors of any district shall have authority to formulate rules, as set forth in this chapter, governing the use of lands within the district in the interest of conserving soil, controlling soil and stream bank erosion, and promoting conservation of natural resources and drainage. The supervisors may conduct such public meetings and public hearings upon rules proposed to be enacted as may be necessary to assist them in this work. The supervisors shall not have authority to enact such land-use rules into ordinances unless a majority of the owners of land lying within the boundaries of the district cast their votes for the approval of the proposed ordinance. The approval of the proposed ordinance by a majority of the votes cast in the referendum shall not be deemed to require the supervisors to enact the proposed ordinance. The rules to be adopted by the supervisors under the provisions of this chapter may include provisions for conserving soil resources, soil and stream bank erosion, water quality improvement, and conservation of natural resources and drainage. (Amended 1995, No. 163 (Adj. Sess.), § 9, eff. May 15, 1996; 2019, No. 14, § 18, eff. April 30, 2019.)