Jackson Reservoir Report

Last Updated: December 6, 2025

Jackson is a private dam located on Turkey Creek in Decatur, Tennessee, completed in 1958.


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Summary

With a hydraulic height of 11.8 feet and a structural height of 16.2 feet, Jackson serves as a significant water storage facility with a capacity of 145 acre-feet. The dam has a spillway type of "Uncontrolled" and a length of 420 feet, providing essential flood control and water resource management for the area.

Although not state-regulated, Jackson poses a significant hazard potential and has a moderate risk assessment rating. The dam has not been recently assessed for its condition, but it is crucial for stakeholders and climate enthusiasts to monitor and maintain the structure to prevent any potential hazards. Despite its age, Jackson continues to play a vital role in the local water infrastructure, demonstrating the importance of sustainable water resource management in the face of changing climate patterns and environmental challenges.

As part of the Nashville District, Jackson stands as a testament to the engineering feats of its time and the ongoing need for effective dam management practices. With its historical significance and functional importance in water storage and flood control, Jackson serves as a reminder of the critical role that dams play in ensuring water security and resilience in the face of climate variability. As water resource and climate enthusiasts continue to advocate for sustainable practices, understanding and monitoring structures like Jackson are essential for safeguarding communities and ecosystems for generations to come.

Year Completed

1958

Dam Length

420

River Or Stream

TURKEY CREEK

Primary Dam Type

Earth

Surface Area

15.6

Hydraulic Height

11.8

Drainage Area

0.15

Nid Storage

145

Structural Height

16.2

Outlet Gates

None

Hazard Potential

Significant

Nid Height

16
       
Seasonal Comparison

Weather Forecast

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.