Mirror Lake, also known as Number 10 Pond, is a picturesque water resource located in Calais, Vermont. This private lake serves as a popular recreational spot, offering opportunities for fishing, boating, and other water activities. Built in 1820, the dam at Mirror Lake stands at 8 feet tall and spans 125 feet in length, providing a storage capacity of 540 acre-feet.

Despite its historical significance and recreational value, Mirror Lake is facing challenges in terms of its condition and hazard potential. The dam has been assessed as poor, with a significant hazard potential, highlighting the need for regular inspections and maintenance. The last inspection in 2015 revealed the dam's deteriorating condition, prompting the need for risk management measures to ensure the safety of the surrounding area.

For water resource and climate enthusiasts, Mirror Lake presents an intriguing case study of balancing recreational use with dam safety and maintenance. As a vital part of the local ecosystem and community, efforts to preserve and protect Mirror Lake are essential to ensure its continued enjoyment for future generations. With its stunning natural beauty and historical significance, Mirror Lake serves as a reminder of the importance of sustainable water resource management in the face of changing environmental conditions.