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  • Upper Missouri River basin forecast remains above average

    Water releases from Gavins Point Dam will remain at 33,000 cubic feet per second in June, which is about average. May runoff in the upper Basin was about 130% of average; however, the summer climate outlook indicates a return to warmer and drier conditions in the upper Basin.

  • Proposal for Gavins Point Dam underseepage control measures available for public comment

    The U.S. Army Corps of Engineers, Omaha District, is seeking comments on a draft environmental assessment for a proposal to implement additional underseepage control measures at Gavins Point Dam near Yankton, South Dakota. Comments on the draft EA will be accepted until May 27, 2020.

  • Missouri River water management public meeting presentations available online

    The U.S. Army Corps of Engineers’ Missouri River Water Management Division has released four videos of presentations that would normally be given at public meetings held throughout the Missouri River Basin. In-person public meetings on Missouri River Mainstem Reservoir System operations originally scheduled for April were canceled to further reduce potential exposure to COVID-19. Instead, the agency will host virtual question and answer sessions in late April. A web page with the videos, a form for submitting questions, and call in dates and times is located here: https://go.usa.gov/xvBpc.

  • Forecast runoff for upper Missouri River basin lower after warm spring

    Gavins Point releases are forecast to remain near 35,000 cubic feet per second through the month of April. The upper Missouri River basin March runoff fell in line with the March 1 forecast. Runoff above Sioux City, Iowa was 5.5 million acre feet, which is almost two times average. The above average runoff was primarily due to plains snow melting over heavily saturated soils. “The warmer-than-normal temperatures melted most of the plains snow in the eastern and central Dakotas. Along with the steady, but near average, rate of snow accumulation in the mountains, the projected upper Missouri River basin runoff for 2020 has been slightly reduced,” said John Remus, chief of the U.S. Army Corps of Engineers’ (Corps) Missouri River Basin Water Management Division.

  • Invasive species mussel in on Gavins Point Dam

    When you’re talking about the U.S. Army Corps of Engineers’ six mainstem dams on the Missouri River, the word small is a relative term. While the dams and their powerhouses vary in size, they are all imposing structures. For instance, Gavins Point Dam, near Yankton, South Dakota, is the smallest of the six, yet it took 7 million cubic yards of earth to build and its three Kaplan generators are capable of generating electricity for 68,000 homes. This makes it that much more ironic that something as small as a zebra mussel could give it such big problems.

  • Lewis and Clark Visitor Center closed for tile installation but will be open through winter.

    The Lewis and Clark Visitor Center, near Yankton, SD, will be closed from Monday, November 4 through Thursday, November 7 for the installation of new tile in the restrooms. The center, which is located on Nebraska Highway 121 near the Gavins Point Dam, will reopen on Friday, November 8.

  • Hazardous conditions exist below Gavins Point Dam for anglers during paddlefish season

    Hazardous conditions will exist below Gavins Point Dam for anglers during paddlefish season With paddlefish snagging season set to begin Oct. 1, anglers are cautioned that hazardous conditions will exist on the Missouri River below Gavins Point Dam near Yankton, SD due to high releases

  • Lewis and Clark Visitor Center will be closed Tuesday, May 28

    The Lewis and Clark Visitor Center, near Yankton, South Dakota, will be closed on Tuesday, May 28, to remove a portion of an interior wall that sustained water damage.

  • Gavins Point Releases Reach 90k

    Water releases from Gavins Point Dam will be increased to 90,000 cubic feet per second at 8 pm today as unregulated inflows from the Niobrara and other watersheds continue to spill into the reservoir. At the same time, Corps officials in Omaha and Kansas City are lending support and resources to state and local communities dealing with rising waters from a powerful regional storm.

  • Gavins Point Releases Increasing

    The U.S. Army Corps of Engineers is increasing releases from Gavins Point Dam today in response to increased runoff into the Missouri River above the dam. Widespread rain and snowmelt has prompted the National Weather Service to issue flood warnings from southeast South Dakota to St. Louis.