(a) The number and geographical boundaries of the several soil and water conservation districts shall remain as they existed on July 1, 1973, unless changed as provided in this Code section.

(b) If two-thirds of the supervisors within each of the affected districts, each of the governing authorities of each county within any affected district, and the State Soil and Water Conservation Commission agree to the alteration of any district or the formation of any new district, the alteration or formation may be effected if all such approvals are filed with the commission along with the description of the altered boundaries or the boundaries of the new districts. The alteration of existing districts or formation of new districts may not be effected so that the boundaries of any such district will traverse the boundaries of any regional development center within the district or districts. All of the property and assets of any altered district shall be distributed among the affected districts in accordance to the same ratio used in the distribution of state appropriated funds to the affected districts.