Williams is a concrete dam located in Londonderry, Vermont, along the West River. Built in 1900, this structure stands at a height of 20 feet and has a length of 117 feet, with a storage capacity of 75 acre-feet. Despite its age, Williams is regulated and inspected by the Vermont Department of Environmental Conservation, ensuring its safety and compliance with state regulations. The dam has a low hazard potential, but its condition has been assessed as poor, indicating a need for maintenance and potential upgrades to ensure its long-term functionality.

The primary purpose of Williams is classified as "Other," and it serves various functions beyond just water storage. The dam is owned by the local government and falls under state jurisdiction for regulation, permitting, inspection, and enforcement. The surrounding area has a drainage area of 44 square miles, with a surface area of 8 acres. Although the dam has not undergone recent modifications, its last inspection in August 2015 highlighted the need for improvements to meet safety standards and ensure its resilience in the face of potential climate challenges.

In the event of an emergency, the dam's Emergency Action Plan (EAP) status is unknown, raising potential concerns about preparedness and response capabilities. With a designated inspection frequency of 10 years, stakeholders may need to prioritize addressing the poor condition assessment to mitigate risks and ensure the continued functionality of Williams for water resource management and climate resilience in the region.