History of the Garrison Dam is forever entwined with the lifeways of the native people of the Fort Berthold Reservation in western North Dakota. The massive water project for flood control and hydroelectric power took seven years to construct west of Underwood, North Dakota. But the massive rolled earth dam also claimed the lives of 15 workers and most of the reservation's river bottom land, which the Mandan, Hidatsa and Arikara people had relied on for centuries for their gardens, water and