While the Missouri River basin has seen improved runoff for two consecutive months, it is not enough to overcome the long-term drought persisting in much of the basin. July runoff in the Missouri River basin above Sioux City, Iowa was 3.2 million acre-feet, which is 98% of average and 0.7 MAF more than was forecast last month. This has led to an annual runoff forecast of 20.6 MAF, which is 80% of average and 0.6 MAF higher than last month’s forecast. “As expected, reservoir inflows in July have been declining due to the warmer and drier conditions in the upper Missouri River Basin,” said John Remus, chief of the U.S. Army Corps of Engineers’ Missouri River Basin Water Management Division. “Per the July 1 System storage check, navigation support was increased slightly to 500 cubic feet per second above minimum-service levels. The navigation support season will be 3 days shorter than normal per the guidance in the Master Manual.” USACE will evaluate lower Missouri River flow conditions to set Gavins Point releases to ensure that flows at the four downstream navigation target locations will be at or above the target levels. “The monthly study indicates that the winter release from Gavins Point, which is based on the September 1 System storage check, will likely be at a minimum rate of 12,000 cfs,” Remus added. System storage peaked on July 20 at 52.1 MAF. System storage Aug. 1 was 51.8 MAF, 4.3 MAF below the base of the Annual Flood Control and Multiple Use Zone. “System storage is expected to continue to decline further into the Carryover Multiple Use Zone during the remainder of 2022 as we make releases during the drier summer and fall periods to meet the authorized purposes,” Remus said.