About Groundhog Falls
This is a long, wide cascade waterfall! Not a lot of height, but certainly no slouch. At lower flows, I suspect that you can walk out on the rock to explore. But when I visited in early June, it was full blast with a lot of water, and there were few places from which you could get an expansive photo. A boat would be a great way to see the falls at this time. As you drive in, keep right and follow to the road barriers at the end of the paved road. The old highway bridge is just beyond. Park your car, and walk back along the road for maybe 50 m until you see the sign on the right for the trail. This leads on a pleasent (if muddy at times) 500 m walk to the falls.
Some quick facts