Summary
Built in 1942 by the Tennessee Valley Authority (TVA), this concrete dam stands at an impressive height of 118 feet, with a hydraulic height of 136 feet and a structural height of 150 feet. With a storage capacity of over 1.4 million acre-feet, the dam serves as a vital resource for managing water levels and mitigating flood risks in the region.
In addition to flood risk reduction, Watts Bar Dam also serves multiple purposes such as hydroelectric power generation, navigation, and recreation. The dam features a controlled spillway with a width of 800 feet and a single lock that spans 360 feet in length and 60 feet in width. With a high hazard potential and a very high risk assessment rating, the dam's safety and maintenance are overseen by the TVA, ensuring the protection of surrounding communities and the environment.
Despite its age, Watts Bar Dam continues to play a crucial role in water resource management and climate resilience efforts in the region. As a key component of the Tennessee River system, this iconic structure not only provides essential flood control measures but also supports sustainable energy production and recreational activities, showcasing the enduring legacy of TVA's commitment to environmental stewardship and public safety.
Year Completed |
1942 |
Dam Length |
2960 |
Dam Height |
118 |
River Or Stream |
TENNESSEE RIVER |
Primary Dam Type |
Concrete |
Surface Area |
37500 |
Length Of Locks |
360 |
Hydraulic Height |
136 |
Drainage Area |
17310 |
Nid Storage |
1415862 |
Structural Height |
150 |
Outlet Gates |
Tainter (radial) |
Hazard Potential |
High |
Foundations |
Rock, Soil |
Nid Height |
150 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Sewee Creek Near Decatur
|
66cfs |
Oostanaula Creek Near Sanford
|
46cfs |
Hiwassee River At Charleston
|
10400cfs |
Daddys Creek Near Hebbertsburg
|
138cfs |
Emory River At Oakdale
|
872cfs |
Obed River Near Lancing
|
670cfs |
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Watts Bar Dam