The petition for transfer of territory from one drainage district to another shall be addressed to the board of county commissioners of the county in which the drainage districts affected are situated and shall describe the territory to be transferred by metes and bounds, or, if platted, by appropriate descriptions as lots or blocks or parts of lots or blocks; from what drainage district and to what drainage district such transfer is sought; that the proposed transfer has been recommended by each of the drainage districts affected by resolution duly adopted by the board of directors of each district; that the proposed transfer of territory will result in more efficient or more adequate protection of the territory described in the petition from overflow or damage and injury resulting therefrom, or will be conducive to the public health, convenience and welfare. Such petition shall contain a prayer that the territory described therein be transferred from one drainage district named therein to another drainage district named therein.