Harris Lake Dam #1 Reservoir Report

Last Updated: December 6, 2025

Harris Lake Dam #1, located in Robbins, North Carolina, is a privately owned earth dam with a primary purpose of irrigation.


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Summary

Completed in 1955, the dam stands at a hydraulic height of 23 feet and a structural height of 22 feet, with a length of 840 feet. It has a storage capacity of 110 acre-feet, with a normal storage level of 92 acre-feet.

The dam, situated on Mill Creek-Os, is under state regulation and inspection by the North Carolina Department of Environmental Quality's Dam Safety Program. Its hazard potential is classified as high, with a fair condition assessment as of March 2021. The dam's last inspection revealed that it meets state guidelines, and it has an emergency action plan in place.

Water resource and climate enthusiasts will find Harris Lake Dam #1 to be an intriguing structure that plays a vital role in irrigation in the area. With its unique design and historical significance dating back to the mid-20th century, this dam serves as a critical water management asset in Moore County, North Carolina. Its continued maintenance and adherence to state regulations ensure the safety and sustainability of the surrounding community and ecosystem.

Year Completed

1955

Dam Length

840

River Or Stream

Mill Creek-Os

Primary Dam Type

Earth

Surface Area

8

Hydraulic Height

23

Nid Storage

110

Structural Height

22

Hazard Potential

High

Nid Height

23
       
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.