28 Sep 2022

Notice of Availability of the Beta Streamflow Duration Assessment Method for the Great Plains

Expiration date: 9/28/2023

The U.S. Army Corps of Engineers (Corps) Albuquerque, Chicago, Detroit, Fort Worth, Galveston, Kansas City, Omaha, Rock Island, St. Louis, St. Paul, and Tulsa Districts, and the U.S. Environmental Protection Agency (EPA), Regions 5, 6, 7, and 8, jointly announce the availability of the Beta Streamflow Duration Assessment Method (SDAM) for the Great Plains (dated September 2022). The method is a rapid assessment tool to help distinguish between ephemeral, intermittent, and perennial streamflow at the reach scale for the Northern and Southern Great Plains SDAM Regions. The beta SDAM may help provide 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 alter or change the definition of “Waters of the U.S.”

19 Sep 2022

NWO-2001-10322-WEH

Expiration date: 10/4/2022

Nebraska Public Power District - The applicant is requesting reauthorization for continued dredging the water intake structure at Cooper Nuclear Station located on the Missouri River near Brownville for an additional 10 years. The dredging will consist of removing sediment at the Cooper Nuclear Station water intake structure as needed and discharge the dredged material into the Missouri River. The amount of sediment to be dredged is 350 cubic yards but could vary depending on flows and the amount of sediment discharged. The dredging activity was previously permitted, as described above, in September 2011 with a 10-year maintenance dredging permit. The applicant is requesting another 10-year maintenance dredging permit until September 2032.

30 Aug 2022

NWO-1995-10004-WEH

Expiration date: 9/19/2022

Ameristar Casino - The proposed project consists of maintenance dredging of the Ameristar boat slip and discharging the dredged material back into the Missouri River on a yearly basis or on an as needed basis. The total amount to be discharged into the Missouri River is 10,000 cubic yards and not to exceed 12,000 cubic yards per year. The material will be hydraulically dredged. The dredging activity was previously permitted, as described above, in September 2011 with a 10-year maintenance dredging permit. The applicant is requesting another 10-year maintenance dredging permit until September 2032.