Allens Pond Dam Reservoir Report

Last Updated: December 5, 2025

Allens Pond Dam, located in Greenville, North Carolina, is a privately owned structure designed by the USDA NRCS for irrigation purposes.


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Summary

Completed in 1959, this earth dam stands at a hydraulic height of 16.28 feet and a structural height of 22.1 feet, with a length of 600 feet. The dam has a normal storage capacity of 286 acre-feet and a maximum storage of 343 acre-feet, serving the Lawrence Run-Tr river or stream for irrigation and recreation.

Despite being classified as having a low hazard potential, Allens Pond Dam is in fair condition as of its last inspection in 2008. The dam's spillway type is uncontrolled, with uncontrolled outlet gates. Its risk assessment is moderate, with no designated emergency action plan or inundation maps prepared. The dam is not state regulated, inspected yearly, or subject to state enforcement, but it is located within the Wilmington District of the US Army Corps of Engineers.

Water resource and climate enthusiasts may find Allens Pond Dam a notable structure for its role in supporting local irrigation needs and recreational activities along the Lawrence Run-Tr river or stream. With a focus on water management and hazard mitigation, ongoing assessments and potential risk management measures could further enhance the safety and sustainability of this important infrastructure.

Year Completed

1959

Dam Length

600

River Or Stream

Lawrence Run-Tr

Primary Dam Type

Earth

Surface Area

20

Hydraulic Height

16.28

Nid Storage

343

Structural Height

22.1

Outlet Gates

Uncontrolled

Hazard Potential

Low

Foundations

Soil

Nid Height

22
       
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.