Henegar, a private-owned dam located in Cannon, Tennessee, serves as a vital water resource for the community. Built in 1970 by the USDA NRCS, the dam stands at a height of 18.1 feet and has a hydraulic height of 13 feet, providing essential fish and wildlife pond habitat. With a normal storage capacity of 48 acre-feet and a surface area of 9.2 acres, Henegar plays a crucial role in fire protection, stock watering, and recreational activities in the area.

Situated on Mountain Creek and managed by the Nashville District of the US Army Corps of Engineers, Henegar is a low hazard dam with a moderate risk assessment rating. Despite its uncontrolled spillway type, the dam has not been rated for its condition assessment. The dam has a drainage area of 0.06 square miles and a maximum storage capacity of 102 acre-feet. While it lacks outlet gates, Henegar's function as a fish and wildlife pond contributes to the overall biodiversity and ecosystem health in the region.

With its picturesque location in Blue Hill, Tennessee, Henegar not only serves as a source of water for various purposes but also enhances the natural beauty of the surrounding landscape. While the dam has not been recently inspected, its low hazard potential and moderate risk assessment indicate that it continues to provide valuable benefits to the community. As a key component of the local water resource infrastructure, Henegar underscores the importance of sustainable water management practices in the face of climate change and evolving environmental challenges.