Mcinnis Pond Dam Reservoir Report
Nearby: W A Hinson Dam E Hamer Smith Dam
Last Updated: December 5, 2025
Mcinnis Pond Dam, located in Marlboro, South Carolina, was completed in 1950 and stands at a height of 12 feet with a length of 560 feet.
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Summary
The primary purpose of this earth dam, with a buttress core type, is for recreation, providing a storage capacity of 63 acre-feet and a surface area of 9 acres. Although the dam is classified as having a low hazard potential, its condition assessment in 2017 revealed poor structural integrity, making it a moderate risk for potential failure.
Managed by a private owner, the Mcinnis Pond Dam is regulated by the South Carolina Department of Health and Environmental Control (DHEC) and undergoes regular state inspections and enforcement measures. The dam's spillway type is uncontrolled, with no outlet gates, locks, or associated structures. Despite its poor condition assessment, the dam has not been modified in recent years, and the last inspection in 2017 recommended an inspection frequency of every 5 years.
For water resource and climate enthusiasts, the Mcinnis Pond Dam serves as a focal point for understanding the importance of maintaining and monitoring infrastructure to ensure public safety and environmental protection. With a risk management plan in place and a moderate risk assessment, there is a need for continued evaluation and potential rehabilitation efforts to mitigate any potential hazards associated with this recreational structure along the TR-Hagins Prong stream in South Carolina.
Year Completed |
1950 |
Dam Length |
560 |
Dam Height |
12 |
River Or Stream |
TR-HAGINS PRONG |
Primary Dam Type |
Earth |
Surface Area |
9 |
Nid Storage |
63 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
12 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Pee Dee River Nr Bennettsville
|
2460cfs |
Big Shoe Heel Creek Nr Laurinburg
|
82cfs |
Lumber River Near Maxton
|
372cfs |
Black Creek Near Quinby
|
350cfs |
Pee Dee River At Peedee
|
3290cfs |
Pee Dee R Nr Rockingham
|
1830cfs |
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Mcinnis Pond Dam