Holbrook, located in Grafton, Vermont, is a privately owned dam on Weaver Brook that serves primarily for recreational purposes. Constructed in 1978 by Dufresne-Henry, this earth dam stands at a height of 14 feet and has a structural height of 16 feet, with a storage capacity of 87 acre-feet. With a drainage area of 0.49 square miles, the dam covers a surface area of 7 acres and is regulated by the Vermont Department of Environmental Conservation.

Despite its fair condition assessment as of June 2020, Holbrook poses a low hazard potential and undergoes inspections every 10 years. The dam has no outlet gates or locks and has not been modified in recent years. It is integral for maintaining the water supply for recreational activities in the area, and its location in Windham County, Vermont, makes it a key structure for water resource management and climate enthusiasts interested in the region.

As a significant part of the New England District's water infrastructure, Holbrook is an essential component for managing water resources in the area. Its construction and maintenance are crucial for ensuring the safety and sustainability of recreational activities and the surrounding ecosystem. With its historical significance and continued importance, Holbrook stands as a vital structure for water resource and climate enthusiasts seeking to understand the interconnectedness of water management and environmental conservation in Vermont.