Descriptions of Letart’s Falls
On 27 September 1803, nine days after Lewis, Thomas Rodney navigated the rapid at Letart Falls. He found the passage easy and regretted having hired a local river pilot:
[T]he torrent and the white caps over the falls was a sufficient direction. There was no danger but one large rock in the midst of the falls, which was easily seen; and the Ohio Pilot directed us close on the left of it, which road our pilot kept, and we were over them in an instant; and when safe we set the pilot ashore, and gave him 3/9 for his trouble.
—Thomas Rodney
Rodney’s “Ohio Pilot” is a reference to the description in Cramer’s Navigator shown and transcribed in the figure. In normal water conditions, the large rock was underwater creating a potential unseen water hazard. Here, Lewis and Rodney benefited from the low water conditions by exposing this hidden hazard. The rocks creating the rapids were later removed, and in Cramer’s 1814 description, there is no mention of it.
To learn how navigators read a river, see Reading River Conditions.