Here are a couple of links re: Quabbin. I didn't explore the sites, but there is a notice in the Alta Vista search results that says Quabbin is closed until further notice due to security concerns
I'm not surprised that the underwater shots showed some monster smallies. The Fisherman magazine often has reports of massive catches of smallmouths when they are in prespawn and spawning phases. I've read reports of anglers catching 50 or more fish per day, with average sizes in the 2 - 4 lb range. (I didn't have any such luck, but did manage to get a few). There is also a healthy population of landlocked salmon and lake trout, although I believe the average size is under 20".