Volunteers Needed! Join MyRWA and the Friends of the Mystic River on Saturday, June 5 from 9am-12pm to help pull out water chestnuts. These invasive weeds are choking the river and it's time to fight back. Please contact the Friends of the Mystic River if you have a boat, or are willing to help with removal (via hand pulling). RSVP is REQUIRED: 781-391-2604 or e-mail Mystic02155@hotmail.com.