In this chapter:
(1) "Authority" means the San Antonio River Authority.
(2) "Board" means the authority's board of directors.
(3) "Commission" means the Texas Commission on Environmental Quality.
(4) "Director" means a board member.
(5) "Flood plain" means the area of the channel of a river or stream and those portions of land abutting and adjacent to the channel that are reasonably required to carry floodwaters.
(6) "San Antonio River Basin" means all of the area except for Bandera, Real, and Kerr Counties that has topographic characteristics causing surface waters to flow into the San Antonio River and its tributaries.
(7) "State" means the State of Texas or any of its agencies, departments, boards, political subdivisions, or other entities.