Sec. 63.001. DEFINITIONS. As used in this chapter: (1) "District" means a self-liquidating navigation district. (2) "Board" means the navigation board. (3) "Commission" means the board of navigation and canal commissioners. (4) "Commissioner" means a member of the commission. Acts 1971, 62nd Leg., p. 110, ch. 58, Sec. 1, eff. Aug. 30, 1971. SUBCHAPTER B. CREATION OF DISTRICT; CONVERSION OF DISTRICT