Floyd Dyess Lake Dam Reservoir Report
Nearby: Ms07137 Lake Dam Tommy Broome Dam
Last Updated: December 9, 2025
Floyd Dyess Lake Dam, located in Hathorn, Mississippi, was completed in 1972 and is primarily used for recreation purposes.
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Summary
The dam, designed by the USDA NRCS, stands at 14 feet high and has a storage capacity of 72 acre-feet. Situated on the TR- Greens Creek E Fork, this earthen dam with a buttress core type plays a crucial role in managing water resources in the region.
The dam is under the jurisdiction of the Mississippi Department of Environmental Quality and is subject to state regulations, permitting, inspections, and enforcement. While the hazard potential is currently undetermined, the risk assessment has been categorized as moderate. The dam features an uncontrolled spillway and outlet gates, emphasizing the importance of monitoring and managing water levels for safety and environmental considerations. With its scenic location and recreational opportunities, Floyd Dyess Lake Dam serves as a vital resource for both water enthusiasts and climate advocates alike.
As a private-owned structure, Floyd Dyess Lake Dam showcases the collaborative efforts between state and federal agencies, including the Natural Resources Conservation Service. Its presence not only enhances the local landscape but also highlights the importance of sustainable water management practices and the need for continued monitoring and risk assessment to ensure the safety and longevity of the dam for future generations of water resource and climate enthusiasts.
Year Completed |
1972 |
Dam Height |
14 |
River Or Stream |
TR- GREENS CREEK E FORK |
Primary Dam Type |
Earth |
Drainage Area |
0.03 |
Nid Storage |
72 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Undetermined |
Foundations |
Soil |
Nid Height |
14 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Pearl River Nr Columbia
|
2790cfs |
Pearl River Nr Monticello
|
1520cfs |
Okatoma Creek At Sanford
|
158cfs |
Bouie Creek Nr Hattiesburg
|
194cfs |
Pearl River Nr Rockport
|
1130cfs |
Leaf River Nr Collins
|
279cfs |
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.
Floyd Dyess Lake Dam