Start on a not-so-great right hand sloper and left on a better left hand sloper. Bump up to rail with left adjust feet, match on the rail. Your left hand goes out to a good edge. Move your feet and throw for the lip. Throw a heel up and rock on up. Fun problem. The start is a little burly.
If you come in from Reservoir Rd., you take a right onto the main path. Then bushwhack left through the woods. This boulder is on the side of stream near a huge, overhung boulder with no holds.
Newer picture with some faint chalk on it.
Here's a view of the steepness of Falling Water.