When 25 or more residents, who are 18 years of age or older, within each county located on a defined watershed desire to form a watershed management authority, said residents shall file a petition with the board of supervisors of the soil and water conservation district in which said proposed authority lies. Such petition shall define the boundaries of the proposed watershed management authority, the number of acres of land involved, reasons for requesting creation of such authority, the proposed name for such watershed management authority and other information pertinent to such proposal. The proposed name of a proposed watershed management authority shall not be the same as, or deceptively similar to, the name of any other watershed management authority. The proposed name shall include references to the geographic features of the area encompassing the watershed management authority.