Sec. 118. (a) "Ground water" or "subterranean water", for purposes of IC 14-25 through IC 14-29, except as provided in subsection (b), means all water that fills the natural openings under the earth's surface. The term includes the following:
(1) Underground water courses.
(2) Artesian basins.
(3) Reservoirs.
(4) Lakes.
(5) Other bodies of water below the earth's surface.
(b) "Ground water", for purposes of IC 14-25-7, has the meaning set forth in IC 14-25-7-3.