Near Charlemont in the northern Berkshires, the Deerfield River has excellent tailwater fly fishing that can last all summer long. The Deerfield River is about 50 feet wide and has a freestone bottom, which can be very slippery at times. The best fishing is below Fife Brook Dam, which keeps the stream running cool, all the way to the State Route 2 bridge near Mohawk Campground. The heavy forest of spruce and hemlock on either side keep this river cool, too.
The fly fishing in the Deerfield River consists of mostly of deep runs, riffles, and large still water pools. The riverbed is mostly rock and boulders so cleated waders are recommended to keep your footing. Water conditions on this river can change rapidly with the water releases used for generating power. Below Bardwells Ferry and above Old Deerfield, deep and large mud bottom pools can be found, with Stillwater being a popular one. Stillwater pool is found just above the Rte 91 bridges which cross over the Deerfield.
When fly fishing on the Deerfield River, you can expect to find rainbow trout and brown trout, some up to 26 inches long, but typically 12 to 16 inches. There is the occasional brook trout as well. April is generally the beginning of the trout fly fishing season and it runs through early December.
Make sure to pay attention to the catch-and-release sections and seasons.
Overall, Deerfield River is the 2nd most popular fly fishing river of all 5 fly fishing spots in Massachusetts.