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Advocates Push for Removal of Defunct Dams on the Charles River

4/10/2026, 6:03:46 PM

Overview of the Dam Removal Initiative

Efforts are underway to remove several aging and defunct dams along the Charles River in Massachusetts, a critical step in restoring the river's natural flow and improving its ecosystem. The Charles River Watershed Association (CRWA) is leading this initiative, advocating for the removal of nearly 20 dams that are remnants of the region's industrial past. These structures are viewed as posing flood risks and disrupting local ecosystems, as they no longer serve a critical purpose.

Background on the Charles River Dams

The Charles River, which stretches 80 miles, has long struggled with a reputation for "dirty water." Over recent decades, significant cleanup efforts have improved its environmental conditions. However, the presence of defunct dams has continued to exacerbate issues such as poor fish passage, harmful algae blooms, and impaired water quality. Lisa Kumpf, the river restoration director for CRWA, emphasizes that approximately 80% of Massachusetts' roughly 3,000 registered dams are no longer functional and contribute to these environmental concerns.

Current Dam Removal Projects

One notable project involves the removal of a dam in South Natick, which is scheduled for this summer following a vote by the Natick Select Board in 2022. This dam, along with the historic Watertown dam—built before the American Revolution—is under scrutiny. While the Watertown dam is not failing, advocates argue it no longer serves a purpose and its removal could significantly benefit the aquatic ecosystem, particularly for migratory fish like herring.

Benefits of Dam Removal

The removal of these dams is projected to yield multiple benefits, including reduced flood risk, improved fishing opportunities, and enhanced recreational activities. Kumpf states, “You remove the dams, get that free-flowing state of river, you can have those ecosystem conditions to support a healthy thriving area.” The CRWA argues that the costs associated with removing the dams are far less than the ongoing maintenance or potential repairs needed for structures that no longer function effectively.

Official Statements & Future Actions

The Massachusetts Department of Conservation and Recreation (DCR) is currently studying potential actions regarding the Watertown dam and is expected to release its findings in the coming weeks. This analysis will inform future decisions about the dam's fate and the broader initiative to restore the Charles River.

Criticism & Opposition

While the push for dam removal has garnered support, some stakeholders may argue for the necessity of certain dams for flood protection and water supply. However, advocates like Kumpf maintain that the majority of these structures are relics that pose more risks than benefits.

What's Next

As the DCR prepares to release its findings, the CRWA and other advocates continue to push for the removal of defunct dams, emphasizing the importance of restoring the Charles River's natural ecosystem for future generations.