Hannas Lake Dam Reservoir Report
Nearby: Mclamb Lake Dam Hayner Lake Dam
Last Updated: December 5, 2025
Hannas Lake Dam, located in Dunn, North Carolina, is a private earth dam that was completed in 1950 for recreational purposes.
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Summary
The dam stands at a structural height of 20 feet with a hydraulic height of 18 feet and a length of 770 feet. It impounds water from East Mingo Creek, creating a surface area of 20 acres and a maximum storage capacity of 233 acre-feet.
Despite its primary purpose for recreation, Hannas Lake Dam also serves as a critical infrastructure for water resource management in the region. The dam is regulated by the North Carolina Dam Safety Program, with inspections conducted regularly to ensure its safety and functionality. The hazard potential of the dam is classified as high, though its condition assessment in February 2021 deemed it to be in fair condition.
Water resource and climate enthusiasts will find Hannas Lake Dam to be a fascinating structure that not only provides recreational opportunities but also plays a crucial role in managing water resources in Harnett County. With its historical significance dating back to 1950, the dam continues to be a key feature in the local landscape, serving as a reminder of the intersection between human development and natural ecosystems. Its location on East Mingo Creek underscores the importance of responsible dam management in mitigating risks and ensuring the safety of surrounding communities.
Year Completed |
1950 |
Dam Length |
770 |
River Or Stream |
East Mingo Creek |
Primary Dam Type |
Earth |
Surface Area |
20 |
Hydraulic Height |
18 |
Drainage Area |
3930 |
Nid Storage |
233 |
Structural Height |
20 |
Hazard Potential |
High |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Cape Fear River At Lillington
|
711cfs |
Middle Creek Near Clayton
|
54cfs |
Little River At Manchester
|
263cfs |
Neuse River Near Clayton
|
384cfs |
Swift Creek Near Mccullars Crossroads
|
7cfs |
Buckhorn Creek Nr Corinth
|
49cfs |
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.
Hannas Lake Dam