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Category: Northwestern Division, U.S. Army Corps of Engineers
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  • 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.

  • Heat wave spikes temps and hydropower demand

    With regional temperatures spiking during this week’s heat wave, the demand for electricity follows. As people turn on fans, air conditioners and other cooling devices, power providers rely on hydropower because dams can bring turbines on quickly, to add immediate supply and provide grid stability.

  • 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.

  • Releases from Garrison Dam to be temporarily lowered

    To assist with the recovery of a tugboat that sank on the Missouri River on Tuesday, May 6, releases from Garrison Dam will be reduced.

  • Missouri River upper basin runoff forecast lowered due to dry conditions

    The updated 2025 calendar year runoff forecast for the Missouri River Basin above Sioux City, Iowa, continues to be below average. April runoff in the Missouri River Basin above Sioux City was 1.4 million acre-feet, 48% of average.

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