what is the tallest waterfall in united states?
Here is the list of tallest U.S. waterfalls: 1  Oloâupena Falls â 2,953 feet, located on Molokai of Hawaii. 2  Puâukaâoku Falls â 2,756 feet, located on Molokai of Hawaii.  Waihilau Falls â 2,600 feet, located on the Big Island of Hawaii.