Section 15-1917. Surveys and maps

1.  The  department may proceed to make such survey of the district as
  may be found to be necessary. It shall prepare  maps  of  such  district
  showing natural and artificial features as may be needed, the boundaries
  of  the  district, the boundaries and area of each parcel of land in the
  district together with the name of the owner thereof so far as the  same
  readily  may  be  ascertained. When a parcel is intersected by a county,
  town, village or city line, the area in each such political  subdivision
  shall be given. Each parcel of land or each subdivision thereof shall be
  designated  by  a  number.  In  the  course  of  the  proceeding further
  subdivision of parcels may be made if necessary or convenient.
    2. The department may then determine the enhancement accruing to  each
  such parcel due to drainage as provided in sections 15-1919 and 15-1921,
  prepare  designs and estimates for drainage works as provided in section
  15-1923, prepare a general apportionment of cost as provided in  section
  15-1925  and  15-1927,  and  fix the final boundaries of the district as
  provided in section 15-1927.