The Carlisle Deluge, 1779, Revisited
We report here that evidence for the 1779 Carlisle Deluge still exists. In the Summer, 1996 issue of Cumberland County History, Whitfield J. Bell described what he called the Carlisle Deluge. Bell used primary sources, mainly a letter from David Rittenhouse to Benjamin Franklin, to describe how, on the night of August 19, 1779, a thunderstorm with copious rain opened a gash on the south side of North (Blue) Mountain east of Flat Rock and northwest of the present Bloserville. Rocks and trees were carried down the mountain.