The U.S. Army Corps of Engineers Northwestern Division is reducing releases from the Gavins Point Dam near Yankton.
The dam flow will be reduced from 30,000 to 12,000 cubic feet per second. The reduction is being made to reduce the peak flood stage in Sioux City, Iowa.
“Repeated heavy rains in the Big Sioux Basin and surrounding tributaries have increased forecasted flows below the system of reservoirs,” Jody Farhat, chief of the Missouri River Water Management Division, said.
The Missouri River south of KELOLAND is expected to rise above flood stage according to the National Weather Service.
“Reductions in releases are part of our normal flood risk reduction measures,” Farhat said. “Proactively reducing Gavins Point Dam releases now will help lower some of the peak water stages on the Missouri River downstream later this week.”
The Army Corps of Engineers made a reduction of 4,000 cfs Monday and an additional 10,000 cfs Tuesday. They plan to decrease another 4,000 cfs Wednesday.