The dam across the potomac at mile 42

This is mile 42 on the JFK run. On the C&O canal, this is about mile 85, and about halfway between Locks 40 and 41.
A nice picturesque little place on the river.
http://www.nps.gov/PWR/customcf/apps/maps/showmap.cfm?alphacode=choh&parkname=Chesapeake%20%26%20Ohio%20Canal%20National%20Historical%20Park



Peter