I don't know if this will help but give it a try.
http://www.mass.gov/dfwele/pab/index.htm
The Commonwealth’s Office of Fishing and Boating Access (FBA) and its programs are the responsibility of the Department’s Director of Fishing and Boating Access, John P. Sheppard, and the Public Access Board. The FBA provides boat and canoe access sites at more than 250 locations on coastal waters, great ponds and rivers throughout Massachusetts. The Department, in conjunction with the Board, acquires property and easements for the purpose of providing access and through the FBA designs, constructs, manages, and improves facilities statewide. Boat launching facilities are managed by staff from the Division of Fisheries & Wildlife, the Department of Conservation and Recreation, and municipalities. This page provides general information about site selection as well as detailed descriptions of the sites themselves, many including maps.