(a) Instead of electing commissioners as provided in § 62.063 of this code, the commissioners court or board may appoint three navigation and canal commissioners to serve on the commission.
(b) The commissioners shall hold office for a term of two years and until their successors are appointed and have qualified.

(c) Commissioners may be removed from office by a majority of the commissioners court or the board for malfeasance or nonfeasance in office.
(d) Successors to members of the commission shall be appointed by a majority vote of the commissioners court or the board.