Hello Downwind,to answer your question,no this is not the deepest water at Dewey. There some deeper water toward the dam. When night fishing,like to find the bait fish,then set up on a channel bend or point with a drop off. The reason for the 30 to 35 fow,I've been catching fish anywhere from 4 to 18 fow and was anchor on the inside of the channel bend. At this time of year the fish are scatter more and best to find a traveling route to be on a bigger school of fish.
LittleJohn