Idaho Code § 43-105
Such petition may be filed with the clerk of the board of county commissioners at any time, and on such filing said clerk shall publish a general notice that (giving the first name on the petition) and others have filed a petition for the organization of an irrigation district. If it be proposed in said petition to construct a new canal system, such notice shall state that fact and give the numbers of the sections in which the lands are situated which it is proposed to include in said district, but if it is proposed to purchase a canal already in operation, the notice shall state that fact and give the name by which such canal system is generally known, and shall state that the lands covered by said canal system are the lands proposed to be included in such district. The notice shall further state the time at which such petition will be presented to the board of county commissioners, which time shall be during a regular meeting of said board or a special meeting called for that purpose, and such notice shall be published two (2) weeks before the day on which the same is to be presented, and if any portion of such proposed district be within another county or counties, then said notice shall be published in a newspaper published in each of said counties.
Idaho Code § 43-105