Today in STEM History - October 9, 1936 Boulder Dam, now the Hoover Dam on Colorado River, began generating electricity. This engineering marvel also alleviated water shortages in the arid southwestern United States transforming the region's landscape and economy. It exemplifies the convergence of STEM disciplines in civil engineering, hydrology, and electrical engineering. Bureau of Reclamation U.S. Army Corps of Engineers, Headquarters Bechtel Corporation American Society of Civil Engineers Ed