Superior Stone Co. Dam Reservoir Report

Last Updated: December 5, 2025

Superior Stone Co.


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Summary

Dam, located in Guilford, North Carolina, along the Rock Creek-Tr river, was completed in 1925 with a primary purpose of "Other." This private-owned Earth dam stands at a hydraulic height of 21 feet and a structural height of 25 feet, with a length of 250 feet. The dam has a storage capacity of 141 acre-feet, providing normal storage of 118 acre-feet and covering a surface area of 11 acres.

Despite being categorized as having a low hazard potential and being in satisfactory condition as of the last inspection in December 2012, Superior Stone Co. Dam is not state-regulated and does not fall under the jurisdiction of any state regulatory agency. The dam does undergo state inspections, but does not require state permitting or enforcement. With a maximum discharge capacity of 83 cubic feet per second, this dam plays a crucial role in water resource management in the region and contributes to the overall climate resilience of the area.

Superior Stone Co. Dam, with its historical significance dating back almost a century, serves as a key infrastructure for water storage and management in the Alamance area. While it may not be subject to state regulations, its importance in maintaining water resources and contributing to climate adaptation efforts cannot be understated. As climate enthusiasts track the changing landscape of water resources, the role of dams like Superior Stone Co. Dam becomes increasingly vital in ensuring the sustainable management of water in the face of climate variability.

Year Completed

1925

Dam Length

250

River Or Stream

Rock Creek-Tr

Primary Dam Type

Earth

Surface Area

11

Hydraulic Height

21

Nid Storage

141

Structural Height

25

Hazard Potential

Low

Nid Height

25
       
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.