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On the River Today
Mini Current on the River Today

A healthier Charles River in Watertown

Tree Trench

CRWA is collaborating with the Town of Watertown to make Edenfield Avenue the first green street in Watertown! A green street incorporates trees, gardens, narrower roadways and other techniques to slow traffic, improve local rivers and beautify the neighborhood.

As part of this project, tree trenches and specially designed gardens called bioswales will collect and filter stormwater runoff, keeping pollution out of the Charles River. Last week, the construction contractors installed the tree trenches which will filter stormwater runoff through layers of mulch, dirt and gravel before allowing it to soak into the ground. Trees will be planted in the tree trenches later in the fall or in the spring of 2018. Stay tuned for future updates on this project. This project has been financed with federal funds from the Environmental Protection Agency to the Massachusetts Department of Environmental Protection under an s. 319 competitive grant.

Standing up for Massachusetts Rivers and Streams

Nishaila PorterLast week, Charles River Watershed Association urged the Massachusetts Department of Environmental Protection to require ALL water suppliers in Massachusetts to adopt reasonable water conservation practices.

CRWA's Executive Director Bob Zimmerman, Rita Barron Fellow Katie Friedman and Volunteer Coordinator Nishaila Porter spoke to a packed house at the public hearing. They advocated for long-overdue changes to MassDEP's Water Management Act regulations to require ALL water suppliers to comply with sensible conservation conditions. The hearing was held in response to a petition filed by the Massachusetts Rivers Alliance asking MassDEP to promulgate regulations to even the playing field across the state by requiring registered water withdrawals (withdrawals over 100,000 gallons per day registered with MassDEP at the time the Act’s passage) and residents to share the responsibility for protecting our vital freshwater resources. 

What’s Your MA Park Story?


CRWA is proud to partner with the Environmental League of Massachusetts to collect stories featuring park users and activists. We’re looking for your best photos, videos and audio files to tell your personal story about why Massachusetts state parks matter. Submit your story to have it featured on social media throughout the fall.


Charles River Watershed Association's mission is to use science, advocacy and the law to protect, preserve and enhance the Charles River and its watershed. For more information about CRWA and our current programs, please visit