A few days after a long-abandoned industrial dam was removed from the mouth of a Hudson River tributary this spring, hundreds of river herring swarmed up into the shallow waters to spawn for the first time in 85 years.
The removal of the rusted steel dam on the Wynants Kill near Albany was the first of what ecologists hope will be many barriers removed in Hudson tributaries to restore spawning habitat for herring and other ocean-going species that have been devastated by habitat loss, pollution and overfishing.
The project is part of a larger movement that has dismantled almost 250 dams across the country since 2012, according to the conservation group American Rivers.
