Carnett Boney Dam Reservoir Report

Last Updated: December 5, 2025

Carnett Boney Dam, located in Clinton, North Carolina, is a privately owned structure designed by USDA NRCS for irrigation purposes along the Coharie Creek-Os river.


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Summary

Completed in 1984, this earth dam stands at a hydraulic height of 23 feet and a structural height of 26 feet, with a length of 500 feet. It has a storage capacity of 94 acre-feet, providing water for irrigation over a drainage area of 26 acres.

Despite being classified as having a low hazard potential and fair condition assessment, the dam is regulated by the NCDEQ Dam Safety Program, ensuring regular inspections and enforcement of safety measures. With a moderate risk assessment rating of 3, the dam has uncontrolled spillways and outlet gates, emphasizing the importance of efficient emergency preparedness and risk management measures. The last inspection was conducted in April 2017, with an inspection frequency of every 5 years.

For water resource and climate enthusiasts, Carnett Boney Dam serves as a vital structure supporting agricultural activities in Sampson County. Its location within the Wilmington District and its role in irrigation highlight the importance of sustainable water management practices in the region. As a privately owned dam with state regulatory oversight, it showcases the collaboration between private owners and government agencies to ensure the safety and efficiency of water resources for the community.

Year Completed

1984

Dam Length

500

River Or Stream

Coharie Creek-Os

Primary Dam Type

Earth

Surface Area

9

Hydraulic Height

23

Drainage Area

26

Nid Storage

94

Structural Height

26

Outlet Gates

Uncontrolled

Hazard Potential

Low

Foundations

Soil

Nid Height

26
       
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.