The Great Falls of the Missouri River are a series of waterfalls on the Missouri River in north-central Montana in the United States. The five falls, which are located in a 10mi area of the river, are:
* Black Eagle Falls ;
* Colter Falls (6 ft 7in);
* Rainbow Falls (44 ft 6in);
* Crooked Falls, also known as Horseshoe Falls (19ft); and
* The Great Falls (87ft).
The Missouri River drops a total of 612ft from the first of the falls to the last, which includes 187ft of waterfalls and 425ft of riverbed descent. The Great Falls have been described as "spectacular", one of the "scenic wonders of America", and "a major geographic discovery". Meriwether Lewis said they were the grandest sight he'd beheld thus far in the journey of the Corps of Discovery.
The Great Falls of the Missouri River were depicted on the Montana Territory territorial seal, and became part of the State of Montana's state seal in 1893.