Omaha, Neb. — The U.S. Army Corps of Engineers (Corps) Missouri River Basin Water Management Division is maintaining above normal releases at the four lower dams on the Missouri River. As expected, September runoff above Sioux City, Iowa, remained well above normal, totaling 1.8 million acre feet (MAF), 157 percent of normal. The 2014 runoff forecast is 35.5 MAF, 141 percent of normal, down slightly from one month ago. Average annual runoff is 25.2 MAF.