[Petition for validation of board proceedings; contents.]

The board of directors of the drainage district shall file in the district court of the county in which the lands of the district, or some portion thereof, are situated, a petition in effect praying that the proceedings aforesaid may be examined, approved and confirmed by the court. Such petition shall set forth the proceedings had for the issuance and deposit of bonds or for the authorization of contract with the United States, or for the determination of the rate of drainage benefits thereunder or for the ascertainment and assessment of damage to district lands under drainage works, as the case may be, shall allege generally that the drainage district was duly organized, and its first board of directors duly elected, but need not set forth facts showing such organization or election of the first board of directors.