Vail, also known as Vail Station, is a picturesque hydroelectric dam located in Lyndon, Vermont along the Passumpsic River. Built in 1910, this concrete gravity dam stands at a height of 32 feet and has a length of 125 feet. It has a storage capacity of 150 acre-feet and serves as a vital water resource for the surrounding area. Despite being classified as having a low hazard potential, the dam's condition is currently not rated, with its last inspection dating back to September 1997.

Owned by the local government, Vail plays a crucial role in the region's water management and hydroelectric power generation. The dam's primary purpose is hydroelectric, and it is designed as a multi-arch structure with a foundation on rock. While it is not regulated by the state or the US Army Corps of Engineers, Vail serves as a key component in the local water infrastructure, providing essential services to the community. The dam's location in the Caledonia County of Vermont adds to its significance in the area's water resource management.

For water resource and climate enthusiasts, Vail represents a unique blend of historical significance and modern functionality. With its serene surroundings and strategic location on the Passumpsic River, the dam stands as a testament to the region's commitment to sustainable energy production and water conservation. While its condition assessment is currently not rated, the dam's low hazard potential and long-standing presence underscore its importance in the local ecosystem. As efforts continue to assess and maintain Vail's structural integrity, it remains a symbol of the enduring connection between water resources and environmental stewardship in the Vermont region.