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Colter Falls, also called Coulter Falls, is a waterfall on the Missouri River in north-central Montana, and part of the Great Falls of the Missouri. Downstream of Colter Falls lies Rainbow Falls, and upstream is Black Eagle 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 are rarely seen even in extreme drought.[2]^: 156

Colter Falls
Location	Montana, U.S.
Coordinates	47°32′15″N 111°12′53″W
Total height	14 feet (4.3 m)[citation needed]
Total width	0.5 miles (0.80 km)[citation needed]
Watercourse	Missouri River
Average flow rate	156,000,000 US gallons (590,000,000 l; 130,000,000 imp gal) per day[1]

Discovery

The Lewis and Clark Expedition visited the falls, first describing the Westslope cutthroat trout at their base, but did not name them. They were named by Paris Gibson, founder of the city of Great Falls, Montana.[2]^: 157-158

References

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