Between 1890 and 1940, five dams were built in the vicinity of Great Falls to generate power from the Great Falls of the Missouri, a chain of giant waterfalls formed by the river in its path through western Montana.
Entre 1890 e 1940 construíronse cinco presas nas proximidades de Great Falls (MT) para xerar enerxía a partir das Great Falls of the Missouri, unha cadea de xigantes fervenzas formadas polo río ao seu paso polo oeste de Montana.