It isn't really a place for swimming or any type of water activities like that. I believe there are signs warning against it. It's not someplace I'd ever suggest someone would really want to visit - I definitely wouldn't recommend getting in the water there as it gets deep awfully quick. If someone were to have an issue there, they're in serious trouble as no help is coming quickly.
There are far, far better places - and far more accessible places - for activities in the area and, especially on weekdays, you may be the only one there to enjoy them even at the height of fishing season/summer/whatever season you're there.
savings2015 t1_je0z2rx wrote
Reply to comment by jcwitty in Upper Shepaug reservoir by 1984isnowpleb
That is a different place than what the OP was asking about.