(a) In planning a proposed drainage project, the engineer may vary from the starting point and the line and plan described by the preliminary hearing order if necessary to drain the property likely to be assessed in the proposed drainage project.
(b) The engineer may:
(1) survey and recommend the location of additional necessary ditches and tile;
(2) where better results will be accomplished and more desirable outlets secured, provide for the extension of the outlet; and
(3) provide for different parts of the drainage to flow in different directions with more than one outlet.
(c) The open ditches do not have to connect if they drain the area to be affected in the petition. The variance must be reported with similar information in the detailed survey report.