(a) In this title the following words have the meanings indicated.
(b) “Board of drainage commissioners” means the board of drainage commissioners of a drainage district.
(c) “Board of viewers” means the board of viewers of a drainage district established under this title.
(d) “Designated officer” means:
(1) the clerk of the county commissioners for a code county or commission county if there is a clerk for the county; or
(2) an employee or official of a county who is designated by the county commissioners or county council to perform the responsibilities of the designated officer under this title.
(e) “Drainage district” means a drainage district established under this title.
(f) “Landowner” means a person who owns land located in a drainage district or proposed drainage district.