It has never been called this. "Graetest" is not a word.
Hoover Dam was originally called Boulder Dam.
There are six of them on the Colorado river. Glenn Canyon dam, Hoover dam, Davis dam, Parker dam, Palo Verde diversion dam and Imperial dam.
Hoover Dam was originally known as "Boulder Dam."
It is called Hoover Dam.
boulder dam
Boulder Dam.
It was called Boulder Dam.
Herbert Hoover - Boulder Dam in the Black Canyon on the Colorado River was renamed to Hoover Dam in his honor.
A nickname for the Hoover Dam is Boulder Dam.
Boulder Dam.
Hoover
hoover dam =D