in-20231206-IR-312230425FRA: Amends 312 IAC 10-1-2 to accurately reflect a statutory reference by adding IC 14-27-7.5. Amends 312 IAC 10-2-28 to update the definition of "lowest floor" by adding the description for coastal high hazard areas. Effective 30 days after filing with the publisher.

Final Rule LSA Document #23-425 DIGEST Sec. 2. (a) This article establishes minimum standards for the delineation and regulation of flood plains to decrease existing flood damages, mitigate future flood damages, and promote the health, safety, and welfare of the people of Indiana. (b) The article is written with an understanding of the legislative declaration that the loss of lives and property caused by floods and the damage resulting from floods is a matter of deep concern to Indiana affecting the life, health, and convenience of the people and the protection of property. Floodways should not be inhabited and should be kept free and clear of interference or obstructions that will cause any undue restriction of the capacity of the floodways. The water resources of Indiana that have been diminished should be accumulated, preserved, and protected to prevent any loss or waste beyond reasonable and necessary use. (c) Except as provided in subsection (b), the flood plains subject to regulation are those along waterways having a drainage area of at least one (1) square mile. (d) The exemption in subsection (c) does not apply to an activity that is subject to IC 14-27-7 IC 14-27-7.5. (e) A local ordinance incorporating flood plain management provisions adopted after July 1, 1974, and before January 1, 2000, must be no less effective than 310 IAC 6-1, before its repeal, and must be approved by the division before its effective date. (f) A local ordinance incorporating flood plain management provisions adopted after December 31, 2001, must be no less effective than this article and must be approved by the division before its effective date. Sec. 28. "Lowest floor" means the lowest elevation described among the following: