Releases from Gavins Point Dam will remain above normal while the U.S. Army Corps of Engineers continues to evacuate near-record runoff from Missouri River reservoirs.
April runoff in the upper river basin above Sioux City was 7.8 million acre-feet, the third highest April total in 121 years of record keeping. Average April runoff is 2.9 MAF.
Gavins Point releases will remain at 55,000 cubic feet per second, above the normal level of about 30,000 cfs for this time of year, John Remus, chief of the corps’ Missouri River Water Management Division in Omaha, said in a news release.
“We will maintain Gavins Point releases at this rate to continue evacuating water from (upriver reservoirs) Oahe and Fort Randall, which are using much of their respective flood storage,” Remus said.
Releases are expected to be above average for the next several months, possibly as late as November, the corps said.