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  • Missouri River upper basin runoff continues below average forecast

    The updated 2025 calendar year runoff forecast for the Missouri River Basin above Sioux City, Iowa, continues to be below average. March runoff in the Missouri River Basin above Sioux City was 2.3 million acre-feet, 76% of average.

  • Virtual Missouri River water management public meetings set for April

    Two meetings to hear from the public about planned operation of the Missouri River Mainstem System will be held the first week in April.

  • Spring Missouri River public meetings to be virtual

    Virtual meetings on Missouri River Mainstem Reservoir system operations are in the process of being scheduled. Meeting dates and times will be announced as the details are finalized. In-person public meetings on Missouri River Mainstem Reservoir system operations, which were scheduled for March 19, 31 and April 2 have been canceled.

  • Gavins Point releases increasing for navigation flow support; Upper basin runoff stays below average

    The updated 2025 calendar year runoff forecast for the Missouri River Basin above Sioux City, Iowa, continues to be below average. February runoff in the Missouri River Basin above Sioux City was 1.0 million acre-feet, 91% of average. “Runoff into the reservoir system was slightly below average for the month of February and conditions across most of the basin remain dry,” said John Remus, chief of the U.S. Army Corps of Engineers’ Missouri River Basin Water Management Division.

  • Below average runoff continues for upper Missouri River Basin in 2025

    The updated 2025 calendar year runoff forecast for the Missouri River Basin above Sioux City, Iowa, continues to be below average. January runoff in the Missouri River Basin above Sioux City was 0.7 million acre-feet, 92% of average. Runoff was near or below average for most of the Missouri River Basin, and most of the upper basin had below-normal precipitation.

  • Below-average runoff and reservoir storage expected for the Missouri River Mainstem System in 2025

    For the 2024 calendar year, Missouri River basin runoff above Sioux City, Iowa totaled 23.3 million acre-feet, 91% of average. Dry conditions continue to affect the upper Missouri River Basin at the start of the 2025 calendar year, so the U.S. Army Corps of Engineers is forecasting below-average runoff into the mainstem reservoir system. For 2025, runoff in the Missouri River basin above Sioux City, Iowa is forecast to be 20.2 MAF, 79% of average.

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