An application for establishment of a coordinated drainage area shall be a petition verified by one or more applicants by affidavit stating that the affiant or affiants personally witnessed the signatures thereon and believe them to be genuine and shall be signed by not less than twenty-five percent of the landowners residing within the area. It shall be filed with the county auditor and presented to the board or commission for consideration at its next meeting.
SDCL 46A-10A-49