Broskie come to Dark Brook Reservoir in Aubrun MA!
There are two islands in the middle (one large and one small) that are both good for camping. Yes, it's not the middle of nowhere but it's lovely out there. There's a beautiful view of the glowing I-90 and the train tracks with the occasional freight train. You can kayak through the culvert that goes under the highway which is quite a trip. The large island has a nice beach and is forested enough for some privacy.
http://www.mass.gov/eea/docs/dfg/dfw/habitat/maps-ponds/dfwdark.pdf 