From Exit 42 on I-77. Go south on WV 16 to the stop light at Fitzpatrick Rd. Turn here and follow to Fitzpatrick Park. Just before the entrance to the park, follow left in front of the water treatment plant. The road will then curve to the right. Just before the RR crossing park on the side of the road. There is a small "parking lot". You need to go east in the same direction as the RR tracks AWAY from the water treatment plant, but it's not legal to walk on the tracks. Hike approx 1/2 mile and you will pass some wetlands areas and then start hearing a waterfall. Once you hear the falls find the trail through the woods on your right. It's very obvious once you get there. Walk a short distance and you're there! The GPS above is your spot across from the falls.
P.S. You may be tempted to think of this place as a nice swimming hole, and people do party here, but it is not recommended as it may be polluted. Anyway, anything just downstream from a treatment plant should be considered suspicious for pollution.
There is also a small falls which is really nothing more than a spillway out at the end of the road around the ball fields at Fitzpatrick Park. Just drive out to the lake and park. You can't miss it.