[PAR] [TLE] Colter Falls [SEP] Colter Falls, also Coulter Falls, (4.3m) waterfall, nearly 0.5 mi in width, part of the Great Falls of the Missouri, on the Missouri River in north-central Montana.  Downstream of Colter Falls lies Rainbow Falls, and upstream is Black Eagle Falls.  The Lewis and Clark Expedition was known to discover Westslope cutthroat trout at the base of the falls.  The falls is now flooded in the impoundment behind Rainbow Dam.  As Rainbow Dam's reservoir is a run-of-the-river reservoir, it rarely is emptied, so the falls is rarely seen even in extreme drought.  The falls was named by Paris Gibson, founder of the city of Great Falls, Montana, while they were not named by Lewis and Clark, who measured it at "6 feet 7 inches". [PAR] [TLE] Missouri River [SEP] The Missouri River is the longest river in North America.  Rising in the Rocky Mountains of western Montana, the Missouri flows east and south for 2341 mi before entering the Mississippi River north of St. Louis, Missouri.  The river takes drainage from a sparsely populated, semi-arid watershed of more than half a million square miles (1,300,000 km), which includes parts of ten U.S. states and two Canadian provinces.  When combined with the lower Mississippi River, it forms the world's fourth longest river system.
[PAR] [TLE] Colter Falls [ SEP ] Colter Falls , also Coulter Falls , ( 4.3 m ) waterfall , nearly 0.5 mi in width , part of the Great Falls of the Missouri , on the Missouri River in north - central Montana . Downstream of Colter Falls lies Rainbow Falls , and upstream is Black Eagle Falls . The Lewis and Clark Expedition was known to discover Westslope cutthroat trout at the base of the falls . The falls is now flooded in the impoundment behind Rainbow Dam . As Rainbow Dam 's reservoir is a run - of - the - river reservoir , it rarely is emptied , so the falls is rarely seen even in extreme drought . The falls was named by Paris Gibson , founder of the city of Great Falls , Montana , while they were not named by Lewis and Clark , who measured it at " 6 feet 7 inches " . [PAR] [TLE] Missouri River [ SEP ] The Missouri River is the longest river in North America . Rising in the Rocky Mountains of western Montana , the Missouri flows east and south for 2341 mi before entering the Mississippi River north of St. Louis , Missouri . The river takes drainage from a sparsely populated , semi - arid watershed of more than half a million square miles ( 1,300,000 km ) , which includes parts of ten U.S. states and two Canadian provinces . When combined with the lower Mississippi River , it forms the world 's fourth longest river system .
How long is the river that contains Colter Falls?
How long is the river that contains Colter Falls ?
2341 mi
2341 mi