Story by Eileen Williamson | U.S. Army Corps of Engineers, Northwestern Division | 09.05.2025
“August runoff was above average in the lower reaches of the upper Missouri River Basin above Sioux City due to timely rainfall. This allowed the System reservoirs to maintain lower release rates while meeting the reduced navigation flow targets at all downstream locations,” said John Remus, chief of the U.S. Army Corps of Engineers’ Missouri River Basin Water Management Division.......
Story by Eileen Williamson | U.S. Army Corps of Engineers, Northwestern Division | 08.07.2025
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 above-average runoff in the lower four reaches. The annual runoff forecast above Sioux City, Iowa is 19.2 MAF, 75% of average....
Story by Eileen Williamson | U.S. Army Corps of Engineers, Northwestern Division | 07.08.2025
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, Iowa, continues to be below average....
Story by Eileen Williamson | U.S. Army Corps of Engineers, Northwestern Division | 06.05.2025
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 million acre-feet, 100% of average....
Story by Eileen Williamson | U.S. Army Corps of Engineers, Northwestern Division | 05.08.2025
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 million acre-feet, 48% of average....
Story by Eileen Williamson | U.S. Army Corps of Engineers, Northwestern Division | 04.09.2025
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....
Story by Eileen Williamson | U.S. Army Corps of Engineers, Northwestern Division | 03.06.2025
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,......
Story by Eileen Williamson | U.S. Army Corps of Engineers, Northwestern Division | 02.06.2025
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. “Runoff into the......
