Holden Dam Removal Planned for Quassaick Creek, $4 Million Backing

Riverkeeper announced on December 1 that it will begin deconstructing the Holden Dam on Quassaick Creek next fall after securing a 4 million dollar grant from the National Coastal Resilience Fund. The dam, built about 80 years ago for milling, is described as obsolete and a chronic source of stream pooling, sediment buildup, warming water and localized flooding. Those conditions have had direct consequences for local infrastructure, including erosion that destabilized a main Newburgh sewer line and led to more than 1 million dollars in repairs.

The organization emphasized that the physical removal of the structure itself can be completed in a short period, possibly days to a week, but that planning, permitting and bank stabilization efforts will require several years. Riverkeeper is simultaneously working on permits for additional dam removals in nearby communities including Highland Falls, Rensselaer and Claverack. The effort is part of a broader movement to address the many small obsolete dams that dot the Hudson Valley and create what are often called ghost dams.

For Orange County residents the project carries both immediate and long term implications. Restoring natural stream flow may lower water temperatures and reduce sediment trapping that concentrates pollutants, improving habitat for fish and invertebrates and reopening migratory pathways for species such as the American eel. From a public health perspective reduced pooling and cooler flows can diminish the conditions that favor harmful algal blooms and certain water borne pathogens, and can lessen chronic flooding that threatens homes and sewer infrastructure in vulnerable neighborhoods.

There will also be community impacts during the multiyear preparation period. Bank stabilization work and permitting will require coordination with local officials and could mean temporary construction access and traffic near the creek. At the same time, preventing future pipe failures and flood damage can save public funds and reduce emergency repairs that disproportionately strain communities with fewer resources.

Similar dam removals across the region have produced rapid ecological recovery after barriers were removed. For residents living along Quassaick Creek, the planned Holden Dam deconstruction represents a convergence of environmental restoration, infrastructure protection and public health improvement that could reshape local waterways for decades to come.