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  • Gavins Point Dam releases to be reduced to winter release rate

    Releases from Gavins Point Dam will be reduced in late November as flow support to navigation ends. Releases are currently 25,500 cubic feet per second (cfs). “We will continue to make releases from Gavins Point Dam to provide flow support at a level 4,500 cfs less than full service, through the end of the navigation flow support season, which ends on Dec. 1 at the mouth of the Missouri River,” said John Remus, chief of the USACE, Missouri River Water Management Division.

  • Virtual Missouri River fall public meeting in-lieu of canceled meetings

    In-person public meetings on Missouri River Mainstem Reservoir system operations, which were scheduled for Monday, Oct. 27; Monday, Nov. 3; and Tuesday, Nov. 4 have been canceled. A virtual meeting on Missouri River Mainstem Reservoir system operations is scheduled for Thursday, Oct. 30 to present the draft 2025-2026 Annual Operating Plan.

  • September runoff above average; Fall public meetings set

    Although overall runoff for September 2025 in the upper Missouri River Basin was above average, runoff in the Fort Peck and Garrison reaches continues to be well-below average. “Beneficial rainfall occurred over central South Dakota and North Dakota in September resulting in well-above average runoff into Oahe, Big Bend, Fort Randall, and Gavins Point,” said John Remus, chief of the U.S. Army Corps of Engineers’ Missouri River Basin Water Management Division.

  • System storage declining, Gavins Point Dam's winter releases will be minimum rate

    August runoff was 1.5 million acre-feet, 109% of average above Sioux City with most of the runoff entering the System below Garrison Dam. September runoff in the upper Basin is forecast to be well below average, especially in the Fort Peck and Garrison reaches. The updated 2025 calendar year forecast for the upper Basin is 19.1 MAF, 74% of average. Average annual runoff for the upper Basin is 25.7 MAF.

  • Below normal runoff continues in the Upper Missouri Basin

    July runoff in the Missouri River Basin above Sioux City, Iowa was 2.0 million acre-feet (MAF), 62% of average. Runoff was below-average in the Fort Peck and Garrison reaches with average to above-average runoff in the lower four reaches. The annual runoff forecast above Sioux City, Iowa is 19.2 MAF, 75% of average.

  • June runoff much below average; Navigation flow support decreased slightly after System storage check

    June runoff in the Missouri River Basin above Sioux City, Iowa was 3.3 million acre-feet, 60% of average. The updated 2025 calendar year runoff forecast for the Missouri River Basin above Sioux City, Iowa, continues to be below average.

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