Tanyard Spgs Reservoir Report
Nearby: Blasingame #1 Perkins Farm Pond
Last Updated: December 13, 2025
Tanyard Spgs is a public utility located in McNairy, Tennessee, along the Snake Creek.
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Summary
This earth dam, completed in 1973, stands at a hydraulic height of 24.8 feet and a structural height of 29.6 feet, with a total length of 450 feet. With a normal storage capacity of 87 acre-feet and a maximum storage of 151 acre-feet, this dam serves the purpose of water resource management in the region.
Maintained by the Tennessee Safe Dams Program, Tanyard Spgs has a low hazard potential and is assessed to be in satisfactory condition as of August 2018. With regular inspections every three years, the dam ensures the safety and security of the surrounding area. While the spillway type is labeled as uncontrolled, the risk assessment for Tanyard Spgs is moderate, indicating a need for ongoing risk management measures to protect the community and environment.
Located in a picturesque setting, Tanyard Spgs is an essential infrastructure for water resource management in McNairy, Tennessee. As climate change continues to impact water availability and quality, the efficient operation and maintenance of dams like Tanyard Spgs become increasingly vital in ensuring a sustainable and resilient water supply for the region.
Year Completed |
1973 |
Dam Length |
450 |
River Or Stream |
SNAKE CREEK |
Primary Dam Type |
Earth |
Surface Area |
9 |
Hydraulic Height |
24.8 |
Drainage Area |
0.7 |
Nid Storage |
151 |
Structural Height |
29.6 |
Outlet Gates |
None |
Hazard Potential |
Low |
Nid Height |
30 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Horse Creek Near Savannah
|
63cfs |
Hatchie River Near Walnut
|
108cfs |
Hatchie River At Bolivar
|
601cfs |
Buffalo River Near Flat Woods
|
384cfs |
Bear Creek At Bishop
|
4330cfs |
Middle Fork Forked Deer River Near Fairview
|
116cfs |
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.
Tanyard Spgs