US Army Corps of Engineers
Omaha District Website

Colorado Regulatory Offices

Collapse All Expand All

Omaha District
9307 South Wadsworth Blvd.
Littleton, CO 80128
(303) 979-4120

Colorado West Regulatory Branch
Albuquerque District
1970 East 3rd Avenue, Suite 109
Durango, CO 81301-5025
(970) 259-1764

Durango Office email:

Albuquerque District
400 Rood Avenue, Room 224
Grand Junction, CO 81501
(970) 243-1199

Southern Colorado Regulatory Office
Albuquerque District
201 West 8th Street, Suite 350
Pueblo, CO 81003
(719) 543-9459



Public Notices

  • NWO-2021-00697-DEN: Public Notice of the Proposed Reissuance of Colorado Regional General Permit 96

    Expiration date: 6/16/2021

    The U.S. Army Corps of Engineers, Albuquerque and Omaha Districts (Corps), is proposing to reissue Regional General Permit (RGP) 96 for natural disaster mitigation and flood-related activities in the State of Colorado. This notice is to inform interested parties of the proposed reissuance of RGP 96 and to solicit comments.

  • SPA-2021-00064, Public Notice of Permit Issuance - Regional General Permit 5 – Ditch Related Activities in the State of Colorado

    Expiration date: 4/8/2021

    The purpose of this Regional General Permit (RGP) is to authorize discharges into ditches that have minimal individual or cumulative adverse effects on the aquatic environment but that do not qualify for the Clean Water Act section 404(f)(1)(C) exemption because of the recapture provision at section 404(f)(2) (see 33 CFR 323.4).

  • Special Public Notice: Navigable Waters Protection Rule Implementation in Colorado

    On April 21, 2020, the Environmental Protection Agency (EPA) and the Department of the Army’s Navigable Waters Protection Rule: Definition of “Waters of the United States” was published in the Federal Register. Colorado subsequently filed an amended motion for a preliminary injunction requesting the United States District Court for the District of Colorado enjoin the EPA and the Department of the Army from implementing the Navigable Waters Protection Rule in the State of Colorado. On June 19, 2020, the district court stayed the effective date of the rule and enjoined the EPA and the Department of the Army to continue administering Section 404 of the Clean Water Act in Colorado under the then-current regulations. The district court’s determination to grant Colorado injunctive relief under the Navigable Waters Protection Rule expired on April 23, 2021. The Navigable Waters Protection Rule is now in effect in Colorado.