Regulatory Branch

Contact Information


(314) 331-8575

Mailing Address:
U.S. Army Corps of Engineers
St. Louis District
Regulatory Division
1222 Spruce Street
St. Louis MO 63103-2833

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Permit Information

The Corps balance permit decisions by recognizing the essential values of the Nation's aquatic ecosystems to the general public, as well as the property rights of private citizens. During the permit process, the Corps considers the views of other Federal, state and local agencies, interest groups, and the general public. Any proposed activity that may impact a jurisdictional water of the U.S. should be designed to avoid and minimize any disturbance to wetlands, streams, or other aquatic areas within the project area, as much as is practicable before applying for a permit from the Corps. Remaining adverse impacts to the aquatic environment may be offset by mitigation requirements, which may include restoring, enhancing, creating and preserving aquatic functions and values. The Corps strives to make its permit decisions in a timely manner. If impacts to wetlands or any other water of the United States are proposed, apply for a Corps Regulatory permit through the Regulatory Request System (RRS).​

Corps Regulatory Permits​
Applications for proposed projects submitted to the Corps will generally fall under one of 3 types of application processes: ​
  • Nationwide Permits are a streamlined series of general permits issued by the Corps throughout the US for minor projects in certain areas. All nationwide permits have general conditions which must be met in order for a project to qualify under the nationwide permit program. Some nationwide permits also require pre-construction notification to the Corps prior to the initiation of any activities.​
  • Regional Permits are a type of general permit as defined in 33 CFR 322.2(f) and 33 CFR 323.2(n). Regional permits are district and state specific and most require pre-construction notification to the Corps. Regional Permits expand general permitting options for certain areas, work types, and applicants under special conditions.​
  • Individual Permits are required for projects which do not fall under the criteria for the above general permits. Individual permits require the completion of the Public Notice process, Individual 401 Water Quality Certification, alternatives analysis, and avoidance and minimization considerations. For individual permits, the Corps will issue a Public Notice advising all interested parties of the proposed activity. This Public Notice process helps the Corps to evaluate the probable impact of the project as part of the public interest review.​​
What should I do if I have questions about which permit my project will fall under?​
​Set up a Pre-Application Consultation with our office through the Regulatory Request System (RRS). This consultation can help clear up what the permitting process will look like for your specific project.​ 

Regional General Permits

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 RGP 16 - Bank Stabilization (IL)
Authorizes activities proposed by the public, railroads, transportation departments, pipeline and utility companies, and government agencies for bank stabilization activities.
Expiration Date: 10/14/2025
Geographic Scope: Memphis, Rock Island, St. Louis District portions of Illinois
Authority: 10/404
 RGP 26 - Emergency Reconstruction and Repair Activities for Flood Damaged Areas (IL)
Authorizes the discharge of dredged or fill material and other work associated with emergency restoration, repair, or reconstruction measures performed in Waters of the United States (WOUS) in the State of Illinois as a result of damages recently incurred during flooding.
Expiration Date: 6/27/2028
Geographic Scope: State of Illinois EXCEPT Louisville District portion
Authority: 10/404
 RGP 34 - Sand and Gravel Excavation Activities (MO)
Authorizes the discharge of dredged and/or fill material related to mechanical sand and gravel excavation in Missouri.
Expiration Date: 8/16/2026
Geographic Scope: Memphis and St. Louis District portions of Missouri
Authority: 10/404
 RGP 38 - Linear Transportation Crossings (IL)
Authorizes the construction, expansion, modification or improvement of linear transportation projects that result in impacts of up to 1 acre in Waters of the United States (WOTUS).
Expiration Date: 3/4/2027
Geographic Scope: State of Illinois
Authority: 10/404
 RGP 41 - Permanent Protection/Repair of Flood Damaged Structures, Damaged Lands and/or Fills (MO)
Authorizes the excavation or placement of fill material for the permanent protection of and/or the repair of existing flood damaged structures, damaged land areas, and/or damaged fill in Missouri.
Expiration Date: 6/14/2028
Geographic Scope: Memphis and St. Louis District portions of Missouri
Authority: 10/404
 RGP 44 - Maintenance of Public Stormwater, Sanitary, and Combined Sewer Systems (MO)
Authorizes sediment and debris removal, maintenance of existing stormwater conveyances or basins in Waters of the United States (WOUS), improvements to existing stormwater management facilities, maintenance or repair of existing stormwater, sanitary, or combined sewer systems in WOUS, maintenance and repair of existing access roads and ramps, and vegetation removal in Missouri.
Expiration Date: 6/20/2028
Geographic Scope: St. Louis District portion of Missouri
Authority: 404
 RGP 44 - Fill Material Placed for Utility Lines (IL)
Activities required for the construction, maintenance, repair, and removal of utility lines and associated facilities in waters of the United States, provided the activity does not result in the loss of greater than 1/2-acre of waters of the United States for each single and complete project.
Expiration Date: 12/21/2025
Geographic Scope: State of Illinois
Authority: 10/404

Additional Application Information

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 Application for Dept of the Army Permit

Form 4345

Please select "Enable All Features". Permit application submittals should include maps and/or photos to accurately identify the project location. If unable to use the RRS please email Form 4345 and supplemental documents to For large files please request a DoD Safe Link from

 Illinois Joint Application Process

Construction projects in Illinois waterways, floodplains and wetlands often require both State and Federal authorization.  The Illinois Joint Application Form is designed to simplify the approval process for an applicant seeking project authorizations from the Corps, Illinois Department of Natural Resources/Office of Water Resources (IDNR/OWR), and Illinois Environmental Protection Agency (IEPA).  A copy of the application, drawings, and copy of any additional support information should be sent to each of the regulatory agencies. Please refer to the map on page 11 for agency contact information. Application forms are available from any of the listed agencies. Applications filed simultaneously with the Corps, IDNR/OWR, and IEPA will be processed concurrently in an independent manner, and should result in expedited receipt of all agency determinations.  If a permit is not required by one or more of the agencies, they will inform the applicant and the other agencies.