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Wetlands, Lakes and Streams Regulation

Wetlands, Lakes & Streams > Application Materials Application Materials

Which application form do I need to submit to IDEM for Section 401 Water Quality Certification?

Please read IDEM's Frequently Asked Questions for specific information to assist you in determining which application form you need to use for your project.

If your project proposes minimal impacts to Waters of the U.S., your project may be eligible to use IDEM's Regional General Permit (RGP) Notification Form (available on the IDEM Forms page).  If your project meets the Terms and Conditions of the Regional General Permit Notification form, you can apply for Section 401 Water Quality Certification by submitting this IDEM RGP Notification Form.  The Regional General Permit Notification may now be submitted online via the Regulatory Services Portal (RSP).

If your project does NOT meet all of the Terms and Conditions of the RGP Notification form, you must apply for a site-specific Individual Section 401 Water Quality Certification.  To apply for a site-specific Individual Section 401 Water Quality Certification, you must use the Application for Authorization to Discharge Dredged or Fill Material to Isolated Wetlands and/or Waters of the State (available on the IDEM Forms page).  It is likely that mitigation will be required for site-specific Individual Section 401 Water Quality Certifications.

How do I obtain IDEM application forms?

There are several ways to obtain copies of the two IDEM Section 401 Water Quality Certification application forms:

  • Download a copy (see below)
  • E-mail an IDEM project manager and request a copy via e-mail.
  • Call the Section 401 Water Quality Certification Program at (317) 233-8488 and request a copy of the application.
  • Write to us at the following address:

Indiana Department of Environmental Management
Section 401 WQC Program
100 N. Senate Avenue
MC 65-42 WQS IGCN 1255
Indianapolis, IN 46204

How do I download an IDEM application form for Section 401 Water Quality Certification?

The following state forms are now available on the IDEM Forms page:

  • Application for Authorization to Discharge Dredged or Fill Material to Isolated Wetlands and/or Waters of the State
  • Regional General Permit Notification Form

Where do I get applications from the U.S. Army Corps of Engineers or the IDNR?

There are three (3) districts of the U.S. Army Corps of Engineers located in Indiana. The Detroit District of the U.S. Army Corps of Engineers covers the northern portions of the state. The Chicago District of the U.S. Army Corps of Engineers covers a small portion of northwest Indiana primarily associated with the drainage area of Lake Michigan. The Louisville District of the U.S. Army Corps of Engineers covers the majority of the state except for northern counties covered by Chicago and Detroit.

Information and jurisdictional maps related to each U.S. Army Corps of Engineers District is available on the U.S. Army Corps of Engineers page.

Information related to the U.S. Army Corps of Engineers application, instructions for completing the application, and additional information is available on the U.S. Army Corps of Engineers website.

Application forms from the Indiana Department of Natural Resources (IDNR) are available on the IDNR Division of Water Regulatory Permit Program page, or you may apply directly to the department using their on-line application form.

Indiana Department of Natural Resources
Division of Water
402 West Washington Street
Room W264
Indianapolis, IN 46204-2748
Phone:  (317) 232-4160 or Toll Free at (877) 928-3755
Division of Water

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