Reduced water releases at Fort Peck and Garrison dams in the upper Missouri River basin
6/6/2025 7:51:55 PM
CATEGORIES:
Relief, Response & Restrictions
Water Supply & Quality
AFFECTED AREAS:
Montana
North Dakota
Nebraska
South Dakota
Start Date: 6/5/2025
- End Date: 9/30/2025
The updated 2025 calendar year runoff forecast for the Missouri River Basin above Sioux City, Iowa, remained below average. May runoff in the Missouri River Basin above Sioux City was 3.4 million acre-feet, 100% of average.
Fort Peck releases were lowered to 9,000 cfs on June 8 and Garrison releases were decreased to 23,000 cfs due to the lower runoff forecast. Releases were expected to stay at those rates through mid-September at Garrison Dam and through September at Fort Peck Dam.
The power plants were forecasted to generate 8.4 billion kWh this year, compared to the long-term average of 9.4 billion kWh.
US Army Corps of Engineers, Northwestern Division, June 5, 2025
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