I went to Beal's Point at Folsom Lake this morning and took some pictures. I walked down close enough to the dam that , if it were allowed, I could have swam (swum?) over and climbed onto the temperature control device.
Beal's Point is a popular swimming area, though perhaps not this year.
These lifeguard stations warn that there is no lifeguard on duty. That bike rider better be careful!
Here is a link to the photos I uploaded to Picasa from today's exploration.
Let me know if this does not work for you.