This app was mentioned in 2 comments, with an average of 2.50 upvotes
First of all, you should definitely consider spending a day on the Blue Ridge Parkway. There are lots of fun opportunities for all levels of hiking abilities. Second, I found this app very helpful: ios or android WNC Waterfalls I had the android version. We used it and loved it!
If you have an Android, you can download this app, which provides information on and directions to tons of waterfalls in WNC. I have used it several times and I love it!