Chicago District Regulatory Division

Jurisdiction – Indiana

The Chicago District administers regulatory authority in the northwestern portion of Indiana, including areas adjacent to Lake Michigan and inland counties such as Lake, Porter, LaPorte, and Newton. The district regulates activities involving navigable waters, wetlands, and floodplains in these regions.

For details on jurisdiction—such as what constitutes waters of the United States—see the About Jurisdiction page.

Permit Types

The Chicago District authorizes Department of the Army permits based on project type and impact. Available permits include:

Nationwide Permits (NWPs)

[Placeholder: List of NWPs for Indiana]

Regional General Permits (RGPs)

[Placeholder: List of Indiana-specific RGPs, e.g., shoreline-related]

Programmatic General Permits (PGPs)

[Placeholder: List of PGPs]

Letters of Permission (LoPs)

[Placeholder: List of LoPs]

Apply

Permit applications for northwestern Indiana must be submitted based on project type and permit category.

Pre-Application Consultations

Submit pre-application requests via email for clarity on whether a permit is needed. Only one project per email.

Regional General Permit Notifications (RGPs)

RGP Notification Forms for Indiana are currently not available through RRS. Submit completed RGP forms by email to: [PLACEHOLDER — email address, e.g., ChicagoRequests@usace.army.mil]

Standard Permit Applications

For comprehensive or individual permits, use the Regulatory Request System (RRS) to initiate your application.

Begin Standard Permit Application in RRS

Need Help?

If you’re unsure of the process, contact the Regulatory Office in Chicago for assistance.

Coordination Requirements

Certain projects may require coordination with other agencies to ensure compliance with environmental laws.

Water Quality Certification (Section 401)

A Certificate from the Indiana Department of Environmental Management (IDEM) may be required.

Endangered Species Act (ESA)

Coordination with the U.S. Fish and Wildlife Service may be required for projects impacting threatened or endangered species.

Historic Preservation (NHPA Section 106)

Consult the Indiana State Historic Preservation Officer (SHPO) for review of potential impacts to historic properties.

Section 408 Review

Projects that affect Corps infrastructure will need separate authorization. See the Section 408 Program for details.

Mitigation

Required to offset unavoidable impacts to aquatic resources. Learn more at: About Mitigation.

Contact

U.S. Army Corps of Engineers
Chicago District, Regulatory Branch—Indiana
[PLACEHOLDER — Confirm mailing address]

[PHONE NUMBER]

[EMAIL ADDRESS]

Detroit District Regulatory Division

Jurisdiction – Indiana

The Detroit District oversees regulatory authority in parts of northern Indiana, particularly areas adjacent to Michigan such as portions of Lake and Steuben counties. Its jurisdiction includes activities affecting navigable waters, wetlands, and floodplains within these areas.

For more information on how USACE defines waters of the United States (WOTUS) and jurisdiction boundaries, see the About Jurisdiction page.

Permit Types

The Detroit District authorizes Department of the Army permits based on project scope and impact. Permits include:

Nationwide Permits (NWPs)

[Placeholder: List of NWPs available for Detroit District Indiana]

Regional General Permits (RGPs)

[Placeholder: List of Detroit-specific RGPs in this area]

Programmatic General Permits (PGPs)

[Placeholder: List of PGPs, if applicable]

Letters of Permission (LoPs)

[Placeholder: List of LoPs available for Detroit District Indiana]

Apply

Permit applications for northern Indiana under Detroit District must comply with jurisdiction-specific instructions.

Regional General Permit (RGP) Notifications

The Indiana Regional General Permit (RGP) Notification Form (Form 51937) is not currently available via RRS. To submit an RGP Notification, please fill out the form via the IDEM Forms Directory and email it to: LRE_REG_Michiana@usace.army.mil.

Standard Permit Applications

For individual or nationwide permit requests, use the Regulatory Request System (RRS) to submit your application.

Begin Standard Permit Application in RRS

Need Help?

If you're not sure which permit path applies, contact the Detroit District Regulatory Office for clarification.

Coordination Requirements

Certain projects require coordination with other agencies.

Water Quality Certification (Section 401)

A Section 401 certification from the Indiana Department of Environmental Management (IDEM) may be required for discharges.

Endangered Species Act (ESA)

You may need to consult with the U.S. Fish and Wildlife Service for potential impacts to threatened or endangered species within the project area.

Historic Properties (NHPA Section 106)

Projects affecting cultural or historic resources must go through consultation with the State Historic Preservation Office (SHPO) or Tribal Historic Preservation Office (THPO), if applicable.

Section 408 Review

Projects that affect an existing Corps civil works structure may require authorization under Section 408. Learn more via our Section 408 Program.

Mitigation

Compensatory mitigation may be required for unavoidable aquatic resource impacts. For guidance, visit About Mitigation.

Contact

U.S. Army Corps of Engineers
Detroit District, Regulatory Branch
477 Michigan Avenue, Room 603
Detroit, MI 48226-2550

(800) 493‑6838
(313) 226‑2218
Please leave a voicemail so we can return your call.

Regadmin.LRE_RegAdmin@usace.army.mil

Louisville District Regulatory Division

Jurisdiction - Indiana

The Louisville District administers regulatory authority over the majority of Indiana outside the Great Lakes and northwestern zones, including central, southern, and southeastern regions of the state.

For clarification on jurisdiction, including wetlands and waters of the U.S., see the About Jurisdiction page.

Permit Types

The Louisville District authorizes Department of the Army permits based on project type and location within most of Indiana. Available permit categories include:

Nationwide Permits (NWPs)

[Placeholder: List of NWPs for Louisville District, Indiana]

Regional General Permits (RGPs)

[Placeholder: List of Indiana RGPs, such as Indiana RGP No. 001]

Programmatic General Permits (PGPs)

[Placeholder: List of PGPs if applicable]

Letters of Permission (LoPs)

[Placeholder: List of LoPs for Louisville District, Indiana]

Apply

Permit applications in most of Indiana must follow the process outlined below based on project type.

Regional General Permit (RGP) Notification

Applicants can access the Indiana RGP Notification Form (Form 51937 – Wetlands: Section 401 WQC Regional General Permit Notification Form) at the IDEM Forms Directory , then email the completed form to:

• CELRL.Door.To.The.Corps@usace.army.mil

Standard Permits

For complex or individual permit requests, apps should be submitted using the Regulatory Request System (RRS).

Begin Standard Permit Application in RRS

Need Help?

Contact the Louisville District Regulatory Office if you're unsure which permit process applies to your project.

Coordination Requirements

Certain projects may require coordination with additional agencies depending on scope and location.

Water Quality Certification (Section 401)

A Section 401 certification from the Indiana Department of Environmental Management (IDEM) may be required for discharges.

Endangered Species Act (ESA)

Consult the U.S. Fish and Wildlife Service for projects that may affect protected species or critical habitat.

Historic Preservation (NHPA Section 106)

Engage with Indiana’s State Historic Preservation Office (SHPO) for potential impacts to historic or culturally significant sites.

Section 408 Review

If your project affects a Corps civil works structure, authorization under Section 408 may be required. Learn more on the Section 408 Program page.

Compensatory Mitigation

Projects with unavoidable impacts to aquatic resources may require mitigation. Visit the About Mitigation page for guidance.

Contact

U.S. Army Corps of Engineers
Louisville District, Regulatory Branch—Indiana
P.O. Box 59
Louisville, KY 40201-0059

(502) 315‑6733
Please leave a voicemail; your call will be returned promptly.

CELRL.Door.To.The.Corps@usace.army.mil