No, you can't go below the dams at Caleveras or Braunig. Back in the day, you could catch hybrids with chicken liver. Not sure how it is now. For reds I would wade out and throw a live crawdad or tilapia out in the channel on Caleveras. Braunig you could chunk out live bait from "redfish point".
It has probably been 15 years since I fished those lakes so my information is historical.
I fished Caleveras back in the day when they had Corvinas. That was a hell of a fish!!