Upper falls is above bridavel falls on the east side. Its a short easy hike up to the first water fall, but gets more dangerous the more falls you try to get to. Unless you are pretty good at rock climbing I dont recommend going past the first waterfall. However, if you are the upper falls are amazing! You can also get pretty high on them. To get to the trail head pull into the nunns park, but instead of turning at the parking lot continue going straight. You will keep driving a short ways until you reach upper falls park. At the park cross the river and then the provo trail. There is a run down building there and thats where the trails starts. Its amazing and not many people know about it so you dont have to deal with the crowds like you do at bridavel.