Regency Lake Dam Reservoir Report

Last Updated: December 5, 2025

Regency Lake Dam, also known as Auto Storage Dam #1, is a privately owned structure located in Mooresville, North Carolina.


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Summary

It serves a primary purpose of recreation and is regulated by the NC Department of Environmental Quality's Dam Safety Program. The dam, which is an earth type, has a hydraulic height of 29 feet and a structural height of 34 feet, with a total length of 260 feet.

With a storage capacity of 82 acre-feet, Regency Lake Dam impounds Reeds Creek, creating a surface area of 9.8 acres. The dam has a significant hazard potential and was last assessed to be in fair condition in January 2019. Emergency action plans have been prepared, and regular inspections are conducted to ensure the safety and integrity of the structure.

Water resource and climate enthusiasts will be intrigued by the unique features and regulatory aspects of Regency Lake Dam, as well as its role in providing recreational opportunities in the area. As a privately owned dam with state oversight, it represents a blend of public safety and private stewardship in managing water resources.

Dam Length

260

River Or Stream

Reeds Creek-Tr

Primary Dam Type

Earth

Surface Area

9.8

Hydraulic Height

29

Drainage Area

35

Nid Storage

82

Structural Height

34

Hazard Potential

Significant

Nid Height

34
       
Seasonal Comparison

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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.