Thousands of volunteers are expected to spread out across the Connecticut River watershed to pick up tons of trash and debris from rivers and shorelines.
The 25th Annual Source to Sea Cleanup began Friday and runs through Sunday.
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The clean up is being held in New Hampshire, Vermont, Massachusetts and Connecticut.
The event is hosted by the Connecticut River Conservancy. Volunteers are asked to register online with the conservancy.
Once they are registered they will receive more information about the activities.
