I just stumbled upon an excellent website regarding the SUASCO waters and added it to my relevant links. The link is: www.sudbury-assabet-concord.org
It is hosted by the Sudbury Assabet & Concord Wild & Scenic River Stewardship Council and includes a Sudbury River Boater's Trail. This trail guide divides a 15 mile section of the river into three 5-mile sub-sections and provides a map, great photographs, and information about put-in/take-out locations. This a great resource for anyone planning to paddle a stretch of this beautiful river or for those who want to take a virtual paddle.