Howdy Craig!
I spent a little over a week at Shasta in Jun. I haven't been to Trinity in several years but I have seen it from the air a LOT. It's pretty low these days.
Shasta was pretty low too but there was still a lotta lake!
I thought it was a little cold in mid JUN. I think I like it better in mid Jul-late Aug.
Gas was about $5/gallon
Cheers,
Rick