The Green Island Project is located at the west end of the U.S. Army Corps of Engineers (Corps) Green Island-Troy Lock and Dam on the Hudson River in Albany County, New York. The Troy Lock and Dam are located at about river mile 154 on the Hudson River. A forebay is located at the west end of the dam leading to the Green Island powerhouse. The new license continues operations and maintenance of the current Green Island Project and also authorizes an increased capacity of 48 megawatts (MW) from the current 6.0 MW facility through the modification and new construction associated with the power generation.
The new license also requires a number of measures to protect and enhance soil and geology, water quality, fish, wildlife, recreation, and cultural resources during construction as well as post-construction due to increasing the hydraulic capacity of the powerhouse. Specific measures to reduce project effects on fisheries resources include modifying project operation, installing and monitoring upstream and downstream fish passage, monitoring water quality and streamflow, and preventing upstream passage by shortnose sturgeon.
The U.S. Department of the Interior (Interior) and the U.S. Department of Commerce’s (Commerce) National Marine Fisheries Service (NMFS), The New York State Department of Environmental Conservation (New York DEC), and American Rivers, Inc. (American Rivers) filed motions to intervene. None of the intervenors opposed the project.