July runoff in the Missouri River Basin above Sioux City, Iowa, was two million acre-feet, 62 percent of the average. The annual runoff forecast above Sioux City is 19.2 million acre-feet, 75 percent of the average. “Above-normal precipitation occurred in much of the basin, though areas of western Montana and Wyoming continue to be very dry,” said John Remus of the U.S. Army Corps of Engineers. 

“The dry soil moisture, below-normal rainfall in the mountains, and below-normal mountain snowpack runoff have led to well below-average reservoir inflows into the Fort Peck and Garrison reaches on the river.” The U.S. Drought Monitor indicated that 53 percent of the basin was not experiencing drought conditions, an improvement of 15 percent since July 1. System storage on August 1 was down only slightly from July. The Drought Outlook indicates drought conditions are expected to persist or expand throughout the basin through the end of October. 

July runoff in the Missouri River Basin above Sioux City, Iowa, was two million acre-feet, 62 percent of the average. The annual runoff forecast above Sioux City is 19.2 million acre-feet, 75 percent of the average. “Above-normal precipitation occurred in much of the basin, though areas of western Montana and Wyoming continue to be very dry,” said John Remus of the U.S. Army Corps of Engineers. “The dry soil moisture, below-normal rainfall in the mountains, and below-normal mountain snowpack runoff have led to well below-average reservoir inflows into the Fort Peck and Garrison reaches on the river.” The U.S. Drought Monitor indicated that 53 percent of the basin was not experiencing drought conditions, an improvement of 15 percent since July 1. System storage on August 1 was down only slightly from July. The Drought Outlook indicates drought conditions are expected to persist or expand throughout the basin through the end of October. -NAFB

Missouri River runoff in July was below average