Section 15-1921. Proceedings on enhancements

1.  The drainage enhancements shall be set forth in a statement signed
  by the department, which together with the map of the district shall  be
  filed  and notice of a hearing thereon at which grievances will be heard
  shall be given. At such hearing objectors  shall  be  heard  as  to  the
  property  lines shown on the maps and the drainage enhancements shown on
  the statement thereof.
    2. After the close of the hearing the department may amend  both  maps
  and  statement,  adopt  the  statement in final form and shall file such
  amended maps and  final  statement  and  give  notice  of  such  filing.
  Thereupon  such  amended maps and final statement shall be recorded when
  and as provided in section 15-1927.