Day-by-Day / October 18, 1803

October 18, 1803

Jefferson limestone

Falls of the Ohio, KY-IN While in the Louisville area, Lewis likely observed the unique ledges of Jefferson Limestone that created the series of dangerous rapids called the Falls of the Ohio.

A “Flat Pavement”

On the Kentucky shore quite to the middle channel the rock is all a flat pavement down to and round the island. The channel on the Kentucky shore however is now dry and the water all decends on that side of the island next the NW shore.
Thomas Rodney[1]16 October 1803. Dwight L. Smith and Ray Swick, ed., A Journey Through the West: Thomas Rodney’s 1803 Journal from Delaware to the Mississippi Territory (Athens: Ohio University Press, 1997), … Continue reading

More a series of rapids than a waterfall, the navigational hazard was created by the Ohio River eroding the hard limestone rock of the 386-million-old rocks called Jeffersonville Limestone. This also created a natural crossing point for bison and Native Americans.

 

Notes

Notes
1 16 October 1803. Dwight L. Smith and Ray Swick, ed., A Journey Through the West: Thomas Rodney’s 1803 Journal from Delaware to the Mississippi Territory (Athens: Ohio University Press, 1997), 123.

Discover More

  • The Lewis and Clark Expedition: Day by Day by Gary E. Moulton (University of Nebraska Press, 2018). The story in prose, 14 May 1804–23 September 1806.
  • The Lewis and Clark Journals: An American Epic of Discovery (abridged) by Gary E. Moulton (University of Nebraska Press, 2003). Selected journal excerpts, 14 May 1804–23 September 1806.
  • The Lewis and Clark Journals. by Gary E. Moulton (University of Nebraska Press, 1983–2001). The complete story in 13 volumes.