Indiana Wetlands regulations & environmental compliance analysis

Indiana Wetlands: What you need to know

Governing Law and Regulations

State-regulated wetlands (SRWs): 327 Indiana Administrative Code (IAC) 17-1-1 to 17-4-10

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Classifications: 327 IAC 17-1-3(1) to 17-1-3(3)

Exempted wetlands: 327 IAC 17-1-3(7)

Exempt activities: 327 IAC 17-1-7

Minimal impacts general permit: 327 IAC 17-2-1 to 17-2-6

Significant impacts in Class I SRWs: 327 IAC 17-3-1 to 17-3-6

Individual permits: 327 IAC 17-4-1 to 17-4-10

Compensatory mitigation: 327 IAC 17-1-5

Water quality certification: 327 IAC 2-1.5-20

Appeals process: Indiana Code (IC) 4-21.5-3-5

Floodways: 312 IAC 10-1-1 to 10-5-11

Lake preservation: 312 IAC 11-1-1 to 11-5-3

Solid waste landfills: 329 IAC 10-20-26

Siting restrictions: 329 IAC 10-16-3

Manure and wetlands: 327 IAC 19-12-4

Regulatory Agencies

Indiana Department of Environmental Management (IDEM) Office of Water Quality

Indiana Department of Natural Resources (DNR) Fish and Wildlife Service

U.S. Army Corps of Engineers (Corps) Chicago District Office Detroit District Office Louisville District Office

U.S. Environmental Protection Agency (EPA) Region 5

See ADDRESSES & CONTACTS for addresses and telephone numbers.

See national section for basic information and federal regulations.

Comparison: State vs. Federal

Rules. Indiana has established a wetlands regulatory program that addresses state-regulated wetlands (SRWs), which are defined as isolated wetlands located within the state that are not subject to regulation under Section 404 of the Clean Water Act (CWA).

Applications for wetland projects involving federally regulated wetlands must be made directly to the appropriate U.S. Army Corps of Engineers (Corps) district office, subject to the Indiana Department of Environmental Management (IDEM) state water quality certification. Indiana ...


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