Indiana Code
Chapter 27.4. Removal of Obstructions in Mutual Drains and Natural Surface Watercourses
36-9-27.4-3. "Natural Surface Watercourse" Defined

Sec. 3. As used in this chapter, "natural surface watercourse" means an area of the surface of the ground over which water from falling rain or melting snow occasionally and temporarily flows in a definable direction and channel.
As added by P.L.239-1996, SEC.3 and P.L.240-1996, SEC.2. Amended by P.L.276-2001, SEC.17.