Tn Consolidated Coal #1 Reservoir Report

Last Updated: December 5, 2025

Tn Consolidated Coal #1 is a privately owned earth dam located in Sequatchie, Tennessee, built in 1976 for the primary purpose of tailings storage.


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Summary

Managed by the Tennessee Safe Dams Program, this dam stands at a hydraulic height of 330 feet and a structural height of 340 feet, with a length of 2550 feet. With a storage capacity of 1342 acre-feet and a surface area of 19 acres, the dam serves a drainage area of 0.17 square miles.

Despite being classified as having a low hazard potential and fair condition assessment, Tn Consolidated Coal #1 undergoes regular inspections by the Mine Safety and Health Administration every 3 years. The dam features an uncontrolled spillway type and no outlet gates. While the risk assessment indicates a moderate level of risk, no specific risk management measures are noted. Overall, Tn Consolidated Coal #1 provides a fascinating insight into the intersection of water resource management, coal mining operations, and dam safety in the state of Tennessee.

Year Completed

1976

Dam Length

2550

Primary Dam Type

Earth

Surface Area

19

Hydraulic Height

330

Drainage Area

0.17

Nid Storage

1342

Structural Height

340

Outlet Gates

None

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

340
       
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.