The fiscal year of the water user district shall coincide with the calendar year. The board of directors, at the close of each year's business, shall cause an audit of the books, records, and financial affairs of the district to be made by an experienced public accountant, copies of a written report of which audit, certified to by said auditors, shall be placed and kept on file at the principal place of business of the district and shall be filed with the secretary of state.
SDCL 46A-9-68