Indiana Code
Chapter 22. State Regulated Wetlands
13-18-22-6. Compensatory Mitigation

Sec. 6. (a) Except as otherwise specified in subsections (b) and (c), compensatory mitigation shall be provided in accordance with the following table:
Wetland
Replacement
On-site and
Off-site
Class
Class
In-lieu Fee
Ratio

Ratio

Class II
Class II or III
1.5 to 1
2 to 1

Nonforested
Nonforested

2 to 1
2.5 to 1

Forested
Forested
Class III
Class III
2 to 1
2.5 to 1

Nonforested
Nonforested

2.5 to 1
3 to 1

Forested
Forested
(b) The compensatory mitigation ratio shall be lowered to one to one (1:1) if the compensatory mitigation is completed before the initiation of the wetland activity.
(c) A wetland that is created or restored as a water of the United States may be used, as an alternative to the creation or restoration of an isolated wetland, as compensatory mitigation for purposes of this section. The replacement class of a wetland that is a water of the United States shall be determined by applying the characteristics of a Class I, Class II, or Class III wetland, as appropriate, to the replacement wetland as if it were an isolated wetland.
(d) The off-site location of compensatory mitigation must be:
(1) within:
(A) the same eight (8) digit U.S. Geological Service hydrologic unit code; or
(B) the same county;
as the isolated wetlands subject to the authorized wetland activity; or
(2) within a designated service area established in an in lieu fee mitigation program approved by the United States Army Corps of Engineers.
(e) Exempt isolated wetlands may be used to provide compensatory mitigation for wetlands activities in state regulated wetlands. An exempt isolated wetland that is used to provide compensatory mitigation becomes a state regulated wetland.
As added by P.L.282-2003, SEC.38. Amended by P.L.241-2005, SEC.4; P.L.147-2015, SEC.12; P.L.160-2021, SEC.10.