Upper Yocona Watershed Structure Y-14-11 Dam Reservoir Report
Last Updated: December 5, 2025
The Upper Yocona Watershed Structure Y-14-11 Dam, also known as Guinn Lake Dam, is a vital flood risk reduction infrastructure located in Pontotoc, Mississippi.
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Summary
Constructed in 1970 by the USDA NRCS, this earth dam stands at a height of 27 feet and has a storage capacity of 852 acre-feet. The dam is designed to mitigate the risk of flooding in the surrounding area, particularly along the TR-Yocona River.
Managed by the local government and regulated by the Mississippi Department of Environmental Quality, this dam plays a crucial role in safeguarding the community from potential water-related hazards. With a low hazard potential and a moderate risk assessment rating, the Upper Yocona Watershed Structure Y-14-11 Dam is a key component of the region's water resource management strategy. While not currently rated for condition assessment, the dam continues to fulfill its primary purpose of flood risk reduction effectively.
As water resource and climate enthusiasts, it is essential to recognize the significance of structures like the Upper Yocona Watershed Structure Y-14-11 Dam in enhancing resilience to changing weather patterns and extreme events. By understanding the design, purpose, and regulatory framework of such infrastructure, we can better appreciate the role they play in protecting communities and ecosystems from the impacts of flooding and other water-related challenges.
Year Completed |
1970 |
Dam Height |
27 |
River Or Stream |
TR- YOCONA RIVER |
Primary Dam Type |
Earth |
Drainage Area |
2.14 |
Nid Storage |
852 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Soil |
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.
Upper Yocona Watershed Structure Y-14-11 Dam