Duke Energy Garner Nta Yard Expansion Swmf #4 Reservoir Report

Last Updated: December 5, 2025

Duke Energy Garner Nta Yard Expansion Swmf #4 is a critical water resource infrastructure project located in Wake County, North Carolina.


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Summary

Owned by a public utility, this facility is regulated by the state and undergoes regular inspections and enforcement to ensure its safety and compliance with environmental regulations. The dam, classified as an Earth type, serves a primary purpose of "Other" and has a high hazard potential, but is currently assessed to be in satisfactory condition.

With a history of reliable operation, Duke Energy Garner Nta Yard Expansion Swmf #4 plays a crucial role in water management in the region. The facility is situated within the Wilmington District and falls under the jurisdiction of various state regulatory agencies including NCDEQ and DEMLR's Dam Safety Program. Despite having a high hazard potential, the dam has been deemed to meet safety guidelines, with emergency action plans in place to address any unforeseen risks or incidents.

As a key component of the state's water infrastructure, Duke Energy Garner Nta Yard Expansion Swmf #4 contributes to the overall water resource management in North Carolina. With a focus on safety and compliance, the facility is subject to regular inspections and assessments to ensure its continued functionality and adherence to regulatory standards. The presence of a reliable emergency action plan underscores the commitment to safeguarding the surrounding community and environment in the event of any emergencies or potential risks associated with the dam.

Primary Dam Type

Earth

Hazard Potential

High
       
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Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.