September Runoff Above Average; Fall Public Meetings Set

OMAHA, Neb. - 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.

“The above-average runoff combined with the lower releases from Gavins Point slightly improves the System storage outlook for the beginning of the 2026 runoff season,” Remus added.

September runoff was 1.3 million acre-feet, 109% of average above Sioux City.

Upper Basi...