Dunaway Reservoir Report

Last Updated: December 5, 2025

Dunaway is a privately owned dam located in Sequatchie, Tennessee, specifically in the city of Tatesville.


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Summary

Built in 1969, this earth dam stands at a structural height of 31 feet, with a hydraulic height of 22 feet, and a length of 318 feet. Its primary purpose is for recreation, offering a surface area of 75 acres and a drainage area of 6.84 square miles.

Managed and regulated by the Tennessee Safe Dams Program, Dunaway has a low hazard potential and is deemed to be in satisfactory condition as of the last inspection in October 2020. With a normal storage capacity of 525 acre-feet and a maximum storage of 1360 acre-feet, this dam on Dunaway Creek is an integral part of the local water resource infrastructure. Despite its moderate risk assessment score of 3, Dunaway continues to serve its purpose effectively while adhering to state permitting, inspection, and enforcement guidelines.

Given its recreational significance and essential role in water management, Dunaway is a notable feature in the Nashville District. With no associated structures or federal agency involvement, this dam remains a key component in the state's overall water resource strategy. Its location, design, and regulatory oversight make it a vital asset for both the local community and the broader ecosystem in the region.

Year Completed

1969

Dam Length

318

River Or Stream

DUNAWAY CREEK

Primary Dam Type

Earth

Surface Area

75

Hydraulic Height

22

Drainage Area

6.84

Nid Storage

1360

Structural Height

31

Outlet Gates

None

Hazard Potential

Low

Nid Height

31
       
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.