Here's an easily accessible waterfall that I drove near 3 or 4 times without getting right up to it. You can see it from the street, Hickman Springs Rd. The waterfall comes from a nearly flat area at the top, and then tumbles 20 feet to the base, where the water continues to trickle down the terrain. Driving here is easy. Parking isn't. All the area at top is private property. There's a little space to pull over if you're driving back down the street.