Pre-filing meeting request

Federal rule requires a minimum of 30 days after submitting the Pre-filing Meeting Request before submitting the certification request.

Send the pre-filing meeting request to .

More information is available at: 40 CFR 121.4.

Certification request

When the certification request is submitted to the DNR, 40 CFR 121.5(a) requires applicants to concurrently submit their certification request to the Federal agency to which they are applying for a license or permit. It is recommended that applicants contact the Federal agency in advance for their submission requirements. It is important to only submit the certification request when you are certain that the project will not change due to comments received during all required public notice periods.

More information is available at: 40 CFR 121.5.

Section 401 Water Quality Pre-Filing Meeting and Certification Request Form and Instruction

Send the certification request to .

DNR 401 Public Notices

Public comments may be submitted via email to or by mail to:

Iowa DNR
Attn: Section 401 Water Quality Certification
502 East 9th Street
Des Moines, IA 50319

Jones County Secondary Roads, Notice #2021-1671
Notice Expiration Date: February 5, 2022
County: Jones

Adam Kraus, Notice #2021-1660
Notice Expiration Date: February 5, 2022
County: Winneshiek

Corps of Engineers, Reissuance of the Nationwide Permits
Notice Date: January 13, 2022
County: Jones

Chapter 61 Amended Notice of Intended Action - Section 401 Water Quality Certification

Notice Expiration Date: Expired

Corps of Engineers/DNR Joint Public Notices

Contact Information

Iowa Department of Natural Resources
Attn: Section 401 Water Quality Certification
Wallace State Office Building
502 E. 9th Street
Des Moines, IA 50319-0034
Phone: 515-725-8399

U.S. Department of the Army Corps of Engineers, Rock Island District
Clock Tower Building – PO BOX 2004
Rock Island, IL 61204-2004
Phone: 309-794-5057

U.S. Department of the Army Corps of Engineers, Omaha District
8901 South 154th Street
Omaha, NE 68138-3611
Phone: 402-896-0896

Additional Resources

Iowa Administrative Code Chapter 61
Water Quality Standards


Permit and Environmental Review Management Tool (PERMT)
Joint Application to Iowa DNR Flood Plain Management, Sovereign Lands/Environmental Review, and US Army Corps of Engineers 404 Permits


Outstanding Iowa Waters and the Outstanding Iowa Waters Map


Corps of Engineers - Nationwide Permits

These 16 NWPs became effective on March 15, 2021 and will expire on March 14, 2026:

  • NWP 12 – Oil or Natural Gas Pipeline Activities
  • NWP 21 – Surface Coal Mining Activities
  • NWP 29 – Residential Developments
  • NWP 39 – Commercial and Institutional Developments
  • NWP 40 – Agricultural Activities
  • NWP 42 – Recreational Facilities
  • NWP 43 – Stormwater Management Facilities
  • NWP 44 – Mining Activities
  • NWP 48 – Commercial Shellfish Mariculture Activities
  • NWP 50 – Underground Coal Mining Activities
  • NWP 51 – Land-Based Renewable Energy Generation Facilities
  • NWP 52 – Water-Based Renewable Energy Generation Pilot Projects
  • NWP 55 – Seaweed Mariculture Activities
  • NWP 56 – Finfish Mariculture Activities
  • NWP 57 – Electric Utility Line and Telecommunications Activities
  • NWP 58 – Utility Line Activities for Water and Other Substances


On June 1, 2020, EPA finalized the “Clean Water Act Section 401 Certification Rule” to implement the water quality certification process consistent with the text and structure of the Clean Water Act (CWA). The final rule establishes procedures that promote consistent implementation of CWA Section 401 and regulatory certainty in the federal licensing and permitting process. The final rule became effective on September 11, 2020. The 401 Rule requires a pre-filing meeting request and a §401 Water Quality Certification request (certification request).

Please Note: If your project can be authorized using a Corps of Engineers Nationwide Permit or a Regional Permit and is not on an Outstanding Iowa Water, the DNR has already certified those permits and a pre-filing meeting and certification request are not required.


Iowa’s River Restoration Toolbox
Iowa’s River Restoration Toolbox is a series of best management practices developed to assist designers in stream stabilization and restoration projects in Iowa with proven techniques with emphasis on incorporating natural materials, such as logs, stone, and live plantings. Among the dozens of techniques described in the Toolbox are longitudinal peaked stone toe protection, j-hook vanes, rock arch rapids, oxbows, riparian corridor restorations, and tree/shrub plantings. It delivers a consistent, relevant assessment method and reviewable design checklists to aid decision making among multidisciplinary teams (i.e. – restoration practitioner, engineer, project manager, funder, biologist, etc.). The toolbox also provides detailed drawings and specification requirements to make natural stabilization projects more biddable.


Iowa Department of Transportation Manuals


Natural Resources Conservation Service - Iowa