Fort Loudoun Dam Reservoir Report

Last Updated: December 5, 2025

Fort Loudoun Dam, located in Loudon, Tennessee, along the Tennessee River, is a marvel of engineering designed by the Tennessee Valley Authority (TVA).


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Summary

Completed in 1943, this concrete dam stands at a height of 125 feet and serves multiple purposes including flood risk reduction, hydroelectric power generation, navigation, recreation, and water supply. With a storage capacity of 475,920 acre-feet and a surface area of 14,000 acres, the dam plays a crucial role in managing water resources in the region.

Fort Loudoun Dam features a controlled spillway, one lock for navigation, and Tainter radial gates for water control. The dam underwent structural modifications in 2015 and 2018 to ensure its continued safety and effectiveness. With a high hazard potential due to its location and the large volume of water it holds back, the dam is closely monitored by the TVA for any signs of deterioration or risk. Emergency action plans are in place to address any unforeseen events, and regular inspections are conducted to assess the dam's condition and maintenance needs.

Overall, Fort Loudoun Dam is a vital infrastructure for the Tennessee Valley, providing essential flood protection, renewable energy, and recreational opportunities. Its strategic location, impressive size, and multi-purpose design make it a key asset for water resource management and climate resilience in the region.

Years Modified

2015 - Structural, 2018 - Structural

Year Completed

1943

Dam Length

4190

Dam Height

87

River Or Stream

TENNESSEE RIVER

Primary Dam Type

Concrete

Surface Area

14000

Length Of Locks

360

Hydraulic Height

98

Drainage Area

9550

Nid Storage

475920

Structural Height

125

Outlet Gates

Tainter (radial)

Hazard Potential

High

Foundations

Rock, Soil

Nid Height

125
       
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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