Indiana Code Title 36. Local Government § 36-9-27-53

(1) the board has initiated, or is considering initiating, a proceeding to reconstruct a regulated drain under this chapter;

(2) one (1) or more other regulated drains in the same watershed are in need of reconstruction;

(3) the board finds that no substantial injustice would result from treating the drains as a single drain;  and

(4) the board has given notice and a hearing to the owners of affected land;

(1) at least once;  and

(2) not less than ten (10) nor more than thirty (30) days before the date of the hearing;