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  • Public invited to comment on draft study of Detroit Reservoir deep drawdown, potential end to hydropower production

    The U.S. Army Corps of Engineers (USACE) Portland District is seeking public input on a draft study that considers changes to how the agency operates its Willamette Valley dams. This study – referred to as a Supplemental Environmental Impact Statement (SEIS) –builds upon a six-year study completed in April 2025 and addresses new requirements regarding endangered fish and hydropower production that emerged shortly before the six-year study was finalized.

  • 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.

  • Dworshak’s “Skeleton Bay” flooded in key step toward regional energy growth

    On the banks of the North Fork Clearwater River, a new chapter is being written for one of the Pacific Northwest’s most important hydropower resources. The U.S. Army Corps of Engineers (USACE) Walla Walla District, in partnership with the Bonneville Power Administration (BPA), has taken a key step toward expanding the Dworshak Dam powerhouse with a fourth generating unit.

  • 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.

  • The Family That Powers On: Generations and Decades of Hydropower Dedication

    For over six decades, two generations of Webb men have harnessed the power of water—first with calloused hands and steel resolve, then with hydropower and a quiet, unyielding desire to serve their fellow man.

  • Army Corps improves Libby Dam’s electrical reliability; strengthens capabilities to manage river temperatures downstream for critical aquatic ecosystem

    Army Corps improves Libby Dam’s electrical reliability with installation of Generator Unit No. 6. In addition to the unit installation, Corps officials are upgrading its selective withdrawal system, aiding continued and enhanced ability to provide river temperatures downstream of the dam, critical for resident trout species, threatened bull trout and endangered Kootenai River white sturgeon.