July runoff in the Missouri River Basin above Sioux City, Iowa was 2.0 million acre-feet (MAF), 62% of average. Runoff was below-average in the Fort Peck and Garrison reaches with average to above-average runoff in the lower four reaches. The annual runoff forecast above Sioux City, Iowa is 19.2 MAF, 75% of 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, chief of the U.S. Army Corps of Engineers’ Missouri River Basin Water Management Division.
“The dry soil moisture, below-normal rainfall in the mountain regions, and below-normal mountain snowpack runoff have led to well below-average reservoir inflows into Fort Peck...
July runoff in the Missouri River Basin above Sioux City, Iowa was 2.0 million acre-feet (MAF), 62% of average. Runoff was below-average in the Fort Peck and Garrison reaches with average to above-average runoff in the lower four reaches. The annual runoff forecast above Sioux City, Iowa is 19.2 MAF, 75% of average.
A broadcast news story providing an update on the one-point-eight-billion-dollar garrison dam spillway modification project. A geotechnical investigation is currently being conducted as part of the five-year design phase to analyze soil and rock material below the spillway.
