Downers Mill, also known as Emory Mill Dam, is a private hydroelectric structure located on the Ottauquechee River in Hartford, Vermont. Built in 1983, this gravity dam stands at a height of 14 feet and has a storage capacity of 80 acre-feet. With a spillway width of 140 feet, the dam serves the primary purpose of generating hydroelectric power.

Managed by the Federal Energy Regulatory Commission, Downers Mill has a low hazard potential and is categorized with a moderate risk assessment level. While it is not state regulated, it falls under the jurisdiction of the Vermont Public Service Board. The dam has not undergone recent inspections, but its emergency action plan was last revised in 2009.

Despite its age, Downers Mill continues to play a vital role in harnessing the river's energy resources. With its unique multi-arch design and concrete construction, this dam is a notable feature in the Windsor County landscape. As water resource and climate enthusiasts, there is much to appreciate about the engineering and operational aspects of this historic hydroelectric structure in Vermont.