Grants Millpond Dam Reservoir Report
Last Updated: December 6, 2025
Grants Millpond Dam, located in Marlboro, South Carolina, is a private structure built in 1950 with a primary purpose of recreation.
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Summary
The dam, standing at 7 feet tall and stretching 682 feet in length, holds a storage capacity of 238 acre-feet and covers a surface area of 56 acres. Situated on Phils Creek, the dam is regulated by the South Carolina Department of Health and Environmental Control (DHEC) and undergoes regular inspections to ensure its safety and compliance with state standards.
Despite its low hazard potential, the dam's condition assessment is marked as poor as of November 2018. With an inspection frequency of every 5 years, there is a need for further evaluation and potentially maintenance to improve its overall condition. As water resource and climate enthusiasts, monitoring the condition and maintenance of Grants Millpond Dam is crucial in ensuring the safety of the surrounding area and the preservation of this recreational water feature. It serves as a reminder of the importance of proper dam management in the face of changing climate patterns and increasing water resource demands.
Year Completed |
1950 |
Dam Length |
682 |
Dam Height |
7 |
River Or Stream |
PHILS CREEK |
Primary Dam Type |
Earth |
Surface Area |
56 |
Nid Storage |
238 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
7 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Pee Dee River Nr Bennettsville
|
2460cfs |
Pee Dee R Nr Rockingham
|
1830cfs |
Big Shoe Heel Creek Nr Laurinburg
|
82cfs |
Black Creek Near Mcbee
|
108cfs |
Lumber River Near Maxton
|
372cfs |
Black Creek Near Hartsville
|
121cfs |
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.
Grants Millpond Dam