Sec. 137. "Lake" has the following meaning:
(1) For purposes of IC 14-9-9 and IC 14-15, a natural or an artificial lake.
(2) For purposes of IC 14-26-2, the meaning set forth in IC 14-26-2-1.5.
(3) For purposes of IC 14-26-3, the meaning set forth in IC 14-26-3-1.