The Holyoke Dam is a hydroelectric dam located on the Connecticut River in Holyoke, Massachusetts. Completed in 1900, it was one of the first large-scale hydroelectric projects in the United States. The dam plays a crucial role in generating electricity and managing river flow, helping to prevent flooding in the region. The dam features a series of gates that control water release, allowing for efficient power generation and navigation. It is part of the larger Connecticut River Watershed, which supports various ecosystems and recreational activities. The Holyoke Dam remains an important infrastructure asset for the local community and the environment.