Mo. Rev. Stat. § 243.440

A complete record of all proceedings under this chapter shall be kept by the county clerk in a separate book to be secured for that purpose. The book shall be designated as the "Drainage Record of ______ County, Missouri", and shall also have recorded therein all papers, documents, bonds and plats filed in any drainage proceeding in that county. It shall be the duty of the county commission to have the accounts of each drainage district audited each year and the auditor's report shall be recorded in the drainage record.