Barnett Lake Dam Reservoir Report
Last Updated: December 6, 2025
Barnett Lake Dam, located in Prentiss, Mississippi, is a privately owned structure designed by the USDA NRCS for recreational purposes.
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Summary
Completed in 1972, this earth dam with a buttress core stands at a height of 19 feet and has a storage capacity of 135 acre-feet. Situated along the TR-Twenty Mile Creek, the dam is regulated by the Mississippi Department of Environmental Quality and is subject to state inspections and enforcement.
Despite being classified as low hazard potential with a moderate risk assessment, Barnett Lake Dam is not currently rated for its condition. The dam features an uncontrolled spillway and outlet gates and does not have associated locks. While its emergency action plan status and risk management measures are not specified, the dam remains a key feature for recreational activities in the area. With its scenic surroundings and historical significance dating back to the early 1970s, Barnett Lake Dam continues to draw water resource and climate enthusiasts to its tranquil waters.
Year Completed |
1972 |
Dam Height |
19 |
River Or Stream |
TR- TWENTY MILE CREEK |
Primary Dam Type |
Earth |
Nid Storage |
135 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
19 |
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.
Barnett Lake Dam