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.”

8 Mar 2021

NWP Reissuance and Regional Conditions for the State of South Dakota

Expiration date: 3/14/2026

On January 13, 2021, the U.S. Army Corps of Engineers (Corps) published a final rule in the Federal Register (86 FR 2744) announcing the reissuance of 12 existing nationwide permits (NWPs) and four new NWPs, as well as the reissuance of NWP general conditions and definitions with some modifications. These 16 NWPs will go into effect on March 15, 2021, and will expire on March 14, 2026. With the publication of these NWPs in the Federal Register, the Northwestern Division has finalized regional conditions for these 16 NWPs in South Dakota. Regional conditions provide additional protection for the aquatic environment and help ensure that the NWPs authorize only those activities with no more than minimal adverse environmental effects. Regional conditions help ensure protection of high value waters within the Omaha District.

13 Jan 2021

Omaha District Special Public Notice for Final Federal Register Publication

Expiration date: 3/14/2026

On January 13, 2021, the U.S. Army Corps of Engineers (Corps) published a final rule in the Federal Register (86 FR 2744) announcing the reissuance of 12 existing nationwide permits (NWPs) and four new NWPs, as well as the reissuance of NWP general conditions and definitions with some modifications. These 16 NWPs will go into effect on March 15, 2021, and will expire on March 14, 2026.