4/6/2026
The updated 2026 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 1.7...
3/11/2026
After a season of virtual-only updates, USACE Missouri River water managers look forward to meeting with members of the public in person this spring. The public is invited to join the U.S. Army Corps...
3/5/2026
Warm February temperatures triggered early snowmelt and runoff in the Missouri River Basin above Sioux City, Iowa, but the overall 2026 runoff forecast remains well below average. February runoff was...
2/4/2026
January runoff in the Missouri River Basin above Sioux City was 1.0 million acre-feet, which is 132% of average. Runoff was above average for all of the reaches in the upper Missouri River Basin, even...
1/8/2026
For the 2025 calendar year, Missouri River basin runoff above Sioux City, Iowa totaled 19.9 million acre-feet, 78% of average. For 2026, the U.S. Army Corps of Engineers is forecasting runoff in the...
12/4/2025
Reduced releases from the Gavins Point Dam to the winter release rate on began Nov. 23 with the navigation flow support season ending on Dec. 1 at St. Louis. “Releases from Gavins Point Dam are being...
11/6/2025
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...
10/22/2025
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...
10/6/2025
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...
9/5/2025
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...
8/7/2025
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...
7/9/2025
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,...
6/5/2025
The updated 2025 calendar year runoff forecast for the Missouri River Basin above Sioux City, Iowa, continues to be below average. May runoff in the Missouri River Basin above Sioux City was 3.4...
5/12/2025
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...
5/8/2025
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...