Join forces with the UML Kayak Center and other local environmentally-minded organizations and individuals to have a great time paddling on the river and picking up trash. Besides being a fun way to spend your afternoon, it is a rewarding experience helping to clean up our river and learning about the Merrimack River watershed and water quality issues. Free event!
https://www.uml.edu/campusrecreation/programs/kayak-center/programs/river-cleanup-day.aspx