Brown Trout Population Study – New & Improved: In an effort to assess the health of the wild brown trout population, TU is collaborating with MA Fisheries and Wildlife to conduct a study of the wild Brown Trout population in the Deerfield River. Beginning Spring of 2018 the adipose fins of all Brown Trout that are stocked in the Deerfield River Catch and Release areas have been removed before stocking. Some Brown Trout are being tagged for identification. We need your help in gathering data for this wild trout population study. Please —>click here<— to report on any Trout (Brookies, Rainbows, and Browns) that are caught on the Upper Deerfield.