This is a nice area connected to several trails, piers, and a little beach. We took the trail which starts past the amphitheater and runs along the water for a while. There were a lot of really nice views of the water. The walk is slightly hilly but not very difficult.
If you get to this main area from the west end of the lake and 280, the drive is very lovely countryside all the way. The rest area on the other side close to the dam is also a nice place to see the lake and have a picnic. There's some room for the kids to run around too.