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Black Eagle Falls

.....is the first of five waterfalls which constitute the Great Falls of the Missouri River in the state of Montana in the United States. Before being dammed, water dropped 26.42 feet (8.05 m) over the falls.

 

Black Eagle Falls formed on a fall line unconformity in the Great Falls Tectonic Zone. The Missouri River in this area flows over and through the Kootenai Formation, a mostly nonmarine sandstone laid down by rivers, glaciers, and lakes in the past. Some of the Kootenai Formation is marine, however, laid down by shallow seas. The river is eating away at the softer nonmarine sandstone, with the harder rock forming the falls themselves.

 

The Mandan and the South Piegan Blackfeet, among other Native Americans, knew of the falls. On June 13, 1805, Meriwether Lewis of the Lewis and Clark Expedition became the first white person to see the Great Falls (the largest of the five waterfalls). On the second day that the expedition camped near the series of falls, Meriwether Lewis discovered Black Eagle Falls.

 

 

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Uploaded on August 1, 2012
Taken on March 27, 2010