Cumberland Mtn #5 Reservoir Report
Nearby: Cumberland Mtn Lake#3 Skymont #2
Last Updated: December 13, 2025
Cumberland Mountain #5 is a private earth dam located in Grundy, Tennessee, specifically in the city of Prairie Plains.
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Summary
Completed in 1968, this dam serves as a crucial water supply source, with a storage capacity of 1114 acre-feet and a normal storage of 684 acre-feet. The dam's primary purpose is water supply, and it is associated with Mill Creek in the Nashville District.
With a hydraulic height of 22 feet and a structural height of 27 feet, Cumberland Mountain #5 has a low hazard potential and a moderate risk assessment rating. Although the dam is not currently rated for condition assessment, it underwent its last inspection in December 2016, with an inspection frequency of every five years. The dam's spillway type is uncontrolled, and it does not have any outlet gates.
Overall, Cumberland Mountain #5 plays a significant role in water resource management in the region, providing essential water supply services while maintaining a relatively low hazard potential. Its strategic location and storage capacity make it a key asset for the community, ensuring reliable access to water resources for various purposes. Ongoing monitoring and maintenance efforts will continue to be important to uphold the dam's safety and functionality for the foreseeable future.
Year Completed |
1968 |
Dam Length |
1300 |
River Or Stream |
MILL CREEK |
Primary Dam Type |
Earth |
Surface Area |
65 |
Hydraulic Height |
22 |
Drainage Area |
0.57 |
Nid Storage |
1114 |
Structural Height |
27 |
Outlet Gates |
None |
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.
Cumberland Mtn #5