[Descant]

I interpret that to mean 510.32. The lake is full at 504, flood risk starts 6" above that at 510. I recall several instances where the lake was way over full, but no significant flooding was reported. I also remember stories of hurricane Carol in 1954 where the lake was so overfull that boats in boathouses had to be partially sunk to get them out so the cabins, masts etc would not hit the roof damaging both boat and boathouse.
At this point, everything is full, up and downstream, I think. And the watershed is saturated, so a little more rain could raise the lake level more than a little.