Henegar Reservoir Report
Nearby: Lake Anne Airport Lake
Last Updated: December 13, 2025
Henegar, a private-owned dam located in Cannon, Tennessee, serves as a vital water resource for the community.
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Summary
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.
Year Completed |
1970 |
Dam Length |
355 |
River Or Stream |
MOUTAIN CREEK |
Primary Dam Type |
Earth |
Surface Area |
9.2 |
Hydraulic Height |
13 |
Drainage Area |
0.06 |
Nid Storage |
102 |
Structural Height |
18.1 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Rock, Soil |
Nid Height |
18 |
Seasonal Comparison
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Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
Henegar