Jackson Reservoir Report

Last Updated: December 5, 2025

Jackson is a key water supply dam located in Franklin, Tennessee, specifically in the city of South Pittsburg.


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Summary

Managed by the Tennessee Safe Dams Program, this earth-type dam stands at a structural height of 59.4 feet with a hydraulic height of 52.1 feet. Completed in 1968, it serves the primary purpose of water supply, with a storage capacity of 680 acre-feet and a normal storage level of 460 acre-feet.

With a high hazard potential but assessed as satisfactory in condition, Jackson plays a crucial role in managing water resources in the region. It spans 400 feet in length and covers a surface area of 22 acres, holding back the waters of Bethel Creek. Despite its age, regular inspections are conducted, with the most recent assessment in July 2020 revealing a moderate risk level of 3. While it lacks certain engineering features like outlet gates and locks, its uncontrolled spillway ensures proper water discharge during peak flows.

As climate change continues to impact water availability and quality, the importance of infrastructure like Jackson in maintaining water security cannot be overstated. With its strategic location and role in the local water supply system, this dam serves as a critical asset in ensuring sustainable water management practices for the community it serves.

Year Completed

1968

Dam Length

400

River Or Stream

BETHEL CREEK

Primary Dam Type

Earth

Surface Area

22

Hydraulic Height

52.1

Drainage Area

0.73

Nid Storage

680

Structural Height

59.4

Outlet Gates

None

Hazard Potential

High

Nid Height

59
       
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.
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