Standing Stone Reservoir Report

Last Updated: December 13, 2025

Standing Stone is a concrete dam located in Overton, Tennessee, specifically in Butler's Landing along Mill Creek.


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Summary

Built in 1936 for recreation purposes, it stands at a hydraulic height of 30.9 feet and a structural height of 43.1 feet, with a length of 280 feet. The dam has a normal storage capacity of 520 acre-feet and a maximum storage of 1508 acre-feet, covering a surface area of 52 acres and serving a drainage area of 14.32 square miles.

Managed by the Tennessee Safe Dams Program, Standing Stone is regulated, permitted, inspected, and enforced by the state of Tennessee. Its spillway type is uncontrolled, with a hazard potential rated as significant and a condition assessment deemed satisfactory as of the last inspection in July 2020. While the risk assessment categorized the dam as moderate, with a DSAC assignment pending, there are no emergency action plans or inundation maps in place.

The dam poses a moderate risk but remains in satisfactory condition, serving as a pivotal recreational spot in Overton County. Its historical significance adds to its appeal for water resource and climate enthusiasts, providing an opportunity to explore the intersection of human ingenuity and environmental stewardship in managing water resources. Standing Stone stands as a testament to the importance of monitoring and maintaining infrastructure for both safety and enjoyment.

Year Completed

1936

Dam Length

280

River Or Stream

MILL CREEK

Primary Dam Type

Concrete

Surface Area

52

Hydraulic Height

30.9

Drainage Area

14.32

Nid Storage

1508

Structural Height

43.1

Outlet Gates

None

Hazard Potential

Significant

Nid Height

43
       
Seasonal Comparison

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Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.