In my rambling through the brambles, I have twice explored this little pocket of lovely water and wood. But because it is so steep, I have been forced to constrain my forays into brief in and outs.
Scoot along the fence next to Coal Creek Utility's reservoir, then at your closest point of attack, dive straight down to this interesting tree above the creek. The waterfall is just a couple hundred feet upstream, although vegetation may obstruct your view, and will almost certainly obstruct attempts to get closer. Enjoy the beautiful music of cascading water!
Congrats to Qaz, the georaider, and ivywoman for a nighttime FTF! Not exactly recommended..., although there is an amazing campsite nearby!