I have only caught a few over the many years at the Barton Cove Launch then a few miles up river. The best luck I've had was southern Vermont on the Connecticut River caught some of good size and more than a few.
I have read in field and stream and sports afield in years gone by that there were walleye's in the oxbow Montague area of the Connecticut river. I had 30 year break from fishing so most of my memories and knowledge is old. I went to the oxbow this past summer and will not go back there in warm swimming weather!!! so many boaters you could not enjoy your self at all!!
i caught 1 about 4 pds ct.river,hinsdale,nh on a dropshot we had a club tourney there this year a couple of the guys caugh5t them fishing for bass so i would think if your going for them that would be a good place i caught mine at the discharge of the water plant in the current