Holt Millpond Dam Reservoir Report

Last Updated: December 5, 2025

Holt Millpond Dam, located in Princeton, North Carolina, is a historic structure completed in 1900 with a primary purpose of recreation.


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Summary

This private dam on Moccasin Creek stands at 15 feet tall with a hydraulic height of 12 feet and a length of 100 feet. It has a storage capacity of 240 acre-feet and serves the community with water storage and recreational opportunities.

Despite its age, Holt Millpond Dam is classified as having a low hazard potential and is currently in a condition that is not rated. The last inspection took place in June 2009, with no major concerns reported. The dam does not fall under state regulation but is subject to periodic inspections to ensure its safety and functionality. With its unique history and contribution to local water resources, Holt Millpond Dam remains an important landmark in Johnston County.

Enthusiasts of water resources and climate in the area can appreciate Holt Millpond Dam for its historical significance and recreational value. Situated in a picturesque setting along Moccasin Creek, this concrete gravity dam continues to provide water storage and leisure activities for the community. While maintaining its low hazard potential, ongoing inspections and monitoring ensure the safety and integrity of this iconic structure for future generations to enjoy.

Year Completed

1900

Dam Length

100

River Or Stream

Moccasin Creek

Primary Dam Type

Concrete

Hydraulic Height

12

Drainage Area

18368

Nid Storage

240

Structural Height

15

Hazard Potential

Low

Nid Height

15
       
Seasonal Comparison

Weather Forecast

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.