Regulatory and Permitting Program

15 Dec 2021

Joint Public Notice: Notice of Availability of the Beta Stream Flow Duration Assessment Method for the Western Mountains

The U.S. Army Corps of Engineers (Corps), Sacramento, San Francisco, Los Angeles, and Albuquerque Districts (South Pacific Division), the Corps Omaha District, and the U.S. Environmental Protection Agency (EPA), Regions 6, 8, and 9 jointly announce the availability of the Beta Streamflow Duration Assessment Method (SDAM) for the Western Mountains (dated November 2021). The method is a rapid assessment tool to help distinguish between ephemeral, intermittent, and perennial streamflow at the reach scale. The SDAM may help in providing technical guidance for identifying waters that may be subject to regulatory jurisdiction under Section 404 of the Clean Water Act; however, this method does not imply or represent a change in the definition of “Waters of the U.S.”

30 Sep 2021

Regional General Permit 96

Expiration date: 9/30/2026

The Albuquerque and Omaha Districts of the U.S. Army Corps of Engineers herby jointly issue Regional

2 Aug 2021

Public Notice of Issuance of Colorado Regional General Permit 5

Expiration date: 7/30/2024

The U.S. Army Corps of Engineers, Albuquerque and Omaha Districts, hereby issue Regional General Permit 5 for discharges of dredged or fill material into waters of the United States associated with ditch related activities in the state of Colorado. The expiration date of RGP 5 is July 30, 2024.

25 Mar 2021

Special Public Notice: Applicability of the Clean Water Act 404(f)(1)(C) exemption for the construction or maintenance of irrigation ditches and the maintenance of drainage ditches within Colorado

On July 24, 2020, the U.S. Army Corps of Engineers (Corps) and the U.S. Environmental Protection Agency (EPA) issued a joint memorandum to the field regarding application of the Clean Water Act (CWA) Section 404(f)(1)(C) exemption pertaining to the construction or maintenance of irrigation ditches and the maintenance of drainage ditches. To help explain how this memo affects the Corps’ Regulatory Program in Colorado and where to find more information, the Albuquerque District, on behalf of the Corps districts in the State of Colorado, has created a Ditch Memo Fact Sheet.

19 Mar 2021

Joint Public Notice: Notice of Availability of the Beta Stream Flow Duration Assessment Method for the Arid West

Joint Public Notice: Notice of Availability of the Beta Stream Flow Duration Assessment Method for the Arid West