Hoover Dam was completed in 1936 — two years ahead of schedule. It’s chief engineer was the Canadian engineer Frank (“Hurry Up!”) Crowe. Crowe designed, built, or worked on many dams in the American west, especially in the southwest.
A list of Crowe’s dams includes (with year and nearby community):
1915: Arrowrock Dam (Boise ID)
1916: Jackson Hole Dam / Jackson Lake Dam (Moran WY)
1925: Tieton Dam (Naches WA)
1936: Hoover Dam / Boulder Dam (Boulder City NV)
1938: Parker Dam (Parker Dam CA)
(Year?) Copper Basin Dam (Cienega Springs CA)
(Year?) Gene Wash Dam (Parker Dam CA)
1945: Shasta Dam (Redding CA) — his last
Cites include:
http://www.redding.com/lifestyle/frank-crowes-name-lives-onin-shasta-dam-other
Francis Trenholm Crowe
Born: 12 Oct 1882, Trenholmville, Québec, Canada
Died: 26 Feb 1946, Redding, California, United States
Crowe single-handedly contributed significantly to the American WWII effort, by the power and water provided by his dams. Fortunately he lived long enough to see victory.