Acm is a privately owned structure in Cumberland, Tennessee, with a primary purpose of serving as a fire protection, stock, or small fish pond. The dam, classified as an Earth type, has a hydraulic height of 13.5 feet and a structural height of 15 feet, with a maximum storage capacity of 62 acre-feet and a normal storage capacity of 49 acre-feet. The dam's spillway type is uncontrolled, and its hazard potential is rated as low, with a moderate risk assessment score of 3.

Located in the Nashville District, Acm has not been modified in recent years and has not undergone a condition assessment. The last inspection was conducted in May 2019, with an inspection frequency of 5 years. Despite not being state-regulated or permitted, Acm meets the guidelines for emergency action preparedness and risk management measures, ensuring that the dam is well-prepared for any potential emergencies that may arise. Overall, Acm serves as a vital resource for fire protection and water storage in the region, contributing to the sustainable management of water resources in Tennessee.