Spectrum Reservoir Report
Nearby: Greenbrier Ridgetop
Last Updated: December 10, 2025
Spectrum, located in Robertson, Tennessee, is a privately owned earth dam constructed in 1974 for recreational purposes along the TRIBPOLE BRIDGE BRANCH stream.
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Summary
With a hydraulic height of 25 feet and a structural height of 27.2 feet, Spectrum has a storage capacity of 37 acre-feet and covers a surface area of 3 acres. Despite being unregulated by the state and having a low hazard potential, Spectrum falls under moderate risk assessment due to its location and design.
The dam, with a length of 296 feet, does not have an outlet gate or spillway width, making it an uncontrolled spillway type structure. Although it has not been assessed for its condition, Spectrum undergoes inspections every 5 years with the last one conducted in March 2016. The dam's emergency action plan status is unknown, and there is limited information available on risk management measures. Despite its moderate risk assessment, Spectrum remains a popular recreational spot in the Nashville District, serving as an essential water resource for the local community.
For water resource and climate enthusiasts, Spectrum offers a unique case study in dam infrastructure management and risk assessment. Its blend of recreational use, moderate risk assessment, and limited state regulation presents an intriguing balance between public safety and environmental enjoyment. As climate change continues to impact water resources, understanding the maintenance and risk factors associated with structures like Spectrum becomes increasingly important for ensuring the sustainable use of our natural water sources.
Year Completed |
1974 |
Dam Length |
296 |
River Or Stream |
TRIBPOLE BRIDGE BRANCH |
Primary Dam Type |
Earth |
Surface Area |
3 |
Hydraulic Height |
25 |
Drainage Area |
0.04 |
Nid Storage |
37 |
Structural Height |
27.2 |
Hazard Potential |
Low |
Nid Height |
27 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
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