There are two wondereful small streams on the west side of Wachusett Resevoir, in Holden Mass.: The Stillwater and the Quinnepoxet. A bit farther west is the Quabbin Resevoir, and most people fish the Swift River south of the Resevoir. I used to prefer the East Branch of the Swift in Petershm and Barre. It's been a few years since I fished central mass, but at this time of year, the Swift is your best bet.