Authority: IC 14-28-1-5; IC 14-28-3-2
Affected: IC 14-27-7; IC 14-27-7.5; IC 14-28-1; IC 14-28-3
Sec. 20.
"Drainage area" means the total land area measured in a horizontal plane and enclosed by a topographic divide from which surface run-off from precipitation normally drains by gravity into a waterway above a specified location. The term includes an area that is ineffective due to karst topography, subsurface drains, or diversions.
312 IAC 10-2-20