Ind. Code § 36-9-1-10 – "Watercourse"

(a) "Watercourse" includes lakes, rivers, streams, and any other body of water.
(b) The term does not include an underground aquifer or water in an underground aquifer.
As added by Acts 1982, P.L.77, SEC.26. Amended by P.L.87-2012, SEC.2.