Mccoy Lake Dam Reservoir Report
Nearby: Ms06284 Lake Dam G D Neely Lake Dam
Last Updated: December 7, 2025
McCoy Lake Dam, located in Simpson, Mississippi, is a privately owned structure primarily used for recreation.
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Summary
Completed in 2011, this earth dam stands at a height of 44 feet and has a length of 700 feet, creating a reservoir with a storage capacity of 286 acre-feet. The dam's purpose is recreation, providing opportunities for water enthusiasts to enjoy activities such as boating and fishing in the surrounding area.
Despite its recreational benefits, McCoy Lake Dam poses a high hazard potential due to its poor condition assessment. The dam is regulated by the Mississippi Department of Environmental Quality, with state inspections and enforcement in place to ensure its safety. The last inspection in July 2019 revealed the dam's need for improvements, highlighting the importance of regular assessments and maintenance to mitigate risks and safeguard the surrounding community.
With a drainage area of 0.07 square miles and a moderate risk assessment rating, McCoy Lake Dam serves as a vital water resource in the region. Although it faces challenges in terms of its condition and hazard potential, ongoing efforts are crucial to maintain the dam's integrity and protect the environment and local residents. By adhering to regulatory standards and implementing necessary risk management measures, McCoy Lake Dam can continue to provide recreational opportunities while ensuring the safety of all those who enjoy its waters.
Year Completed |
2011 |
Dam Length |
700 |
Dam Height |
44 |
River Or Stream |
UNNAMED STREAM |
Primary Dam Type |
Earth |
Surface Area |
8 |
Drainage Area |
0.07 |
Nid Storage |
286 |
Outlet Gates |
None |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
44 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Strong River At D`Lo
|
286cfs |
Pearl River Nr Rockport
|
1230cfs |
Pearl River At Jackson
|
1180cfs |
Lynch Creek At Jackson
|
1100cfs |
Pearl River Nr Monticello
|
1640cfs |
Hanging Moss Creek Nr Jackson
|
356cfs |
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.
Mccoy Lake Dam