Dunbar, located in Montgomery, Tennessee, is a state-regulated dam managed by the Tennessee Safe Dams Program. Built in 1950, this earth dam stands at a structural height of 11.4 feet with a hydraulic height of 8.6 feet, holding a maximum storage capacity of 180 acre-feet of water from the Dunbar Cave stream. Despite its low hazard potential, the dam's condition assessment in 2017 was deemed unsatisfactory, indicating the need for maintenance and repairs to ensure its continued safety and functionality.

The dam's spillway, of the uncontrolled type, has a width of 0 feet, and it is associated with the Dunbar Cave stream. The last inspection of Dunbar was conducted on September 1, 2017, with an inspection frequency of 3 years. While the risk assessment for the dam is moderate, with a rating of 3, no specific risk management measures or inundation maps have been prepared as of the latest data update in March 2021. With Mark E. Green (R) as the U.S. Congressman representing the area, water resource and climate enthusiasts may find opportunities for advocacy and engagement related to the maintenance and management of Dunbar and other dams in the region.