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After passing one continued rapid and three small cascades of about four or five feet each[,] at the distance of about five miles I arrived at a fall of about 19 feet; the river is here about 400 yds wide. this pitch which I called the crooked falls occupys about three fourths of the width of the river, commencing on the south side, extends obliquly upwards about 150 yds.[,] then forming an accute angle extends downwards nearly to the commencement of four small Islands lying near the N. shore; among these Islands and between them and the lower extremity of the perpendicular pitch being a distance of 100 yards or upwards, the water glides down the side of a sloping rock with a volocity almost equal to that of it’s perpendicular decent.
For a time, later in the nineteenth century, it seemed to some viewers that “horseshoe fall,” would be more descriptive, but Lewis’s name has prevailed. The islands and sloping rock Lewis noted have been obliterated by the in-fill on the north bank, which covers three large pipes that carry water from an intake above Rainbow Fall to a powerhouse a short distance below Crooked Falls.
By Jim Wark
Of all the falls of the Missouri, this one remains the nearest to the way it looked to Lewis and Clark.
Just above these falls, the captain continued, “the river makes a suddon bend to the right or Northwardly. I should have returned from hence but hearing a tremendious roaring above me I continued my rout across the point of a hill a fiew hundred yards further.” — lewisandclark.org
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