Hydraulic models guide design of Garrison Dam spillway, mega dam safety project
A close-up view of the stilling basin for the comprehensive 1-to-55 scale model of the Garrison Dam spillway at the U.S. Army Engineer Research and Development Center in Vicksburg, Mississippi, December 11, 2025. The modification project is the largest dam safety modification project in the history of the U.S. Army Corps of Engineers and will improve the safety and structural integrity of the Garrison Dam in North Dakota. (U.S. Army Corps of Engineers photo by Delanie Stafford)